Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 17 18:34:26 UTC 2013


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
TRNOG, CaribNOG and the RIPE Routing Working Group.

Daily listings are sent to bgp-stats at lists.apnic.net

For historical data, please see http://thyme.rand.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

Routing Table Report   04:00 +10GMT Sat 18 May, 2013

Report Website:     http://thyme.rand.apnic.net
Detailed Analysis:  http://thyme.rand.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              454719
    Prefixes after maximum aggregation:                          185412
    Deaggregation factor:                                          2.45
    Unique aggregates announced to Internet:                     224945
Total ASes present in the Internet Routing Table:                 44101
    Prefixes per ASN:                                             10.31
Origin-only ASes present in the Internet Routing Table:           34624
Origin ASes announcing only one prefix:                           16102
Transit ASes present in the Internet Routing Table:                5833
Transit-only ASes present in the Internet Routing Table:            152
Average AS path length visible in the Internet Routing Table:       4.6
    Max AS path length visible:                                      30
    Max AS path prepend of ASN ( 19037)                              22
Prefixes from unregistered ASNs in the Routing Table:               320
    Unregistered ASNs in the Routing Table:                         136
Number of 32-bit ASNs allocated by the RIRs:                       4770
Number of 32-bit ASNs visible in the Routing Table:                3644
Prefixes from 32-bit ASNs in the Routing Table:                   10428
Special use prefixes present in the Routing Table:                   23
Prefixes being announced from unallocated address space:            260
Number of addresses announced to Internet:                   2616500460
    Equivalent to 155 /8s, 244 /16s and 160 /24s
    Percentage of available address space announced:               70.7
    Percentage of allocated address space announced:               70.7
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               94.5
Total number of prefixes smaller than registry allocations:      160213

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                   109185
    Total APNIC prefixes after maximum aggregation:               33486
    APNIC Deaggregation factor:                                    3.26
Prefixes being announced from the APNIC address blocks:          110553
    Unique aggregates announced from the APNIC address blocks:    44986
APNIC Region origin ASes present in the Internet Routing Table:    4845
    APNIC Prefixes per ASN:                                       22.82
APNIC Region origin ASes announcing only one prefix:               1226
APNIC Region transit ASes present in the Internet Routing Table:    823
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         30
Number of APNIC region 32-bit ASNs visible in the Routing Table:    527
Number of APNIC addresses announced to Internet:              722376416
    Equivalent to 43 /8s, 14 /16s and 150 /24s
    Percentage of available APNIC address space announced:         84.4

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-133119
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    159587
    Total ARIN prefixes after maximum aggregation:                80307
    ARIN Deaggregation factor:                                     1.99
Prefixes being announced from the ARIN address blocks:           160174
    Unique aggregates announced from the ARIN address blocks:     73630
ARIN Region origin ASes present in the Internet Routing Table:    15701
    ARIN Prefixes per ASN:                                        10.20
ARIN Region origin ASes announcing only one prefix:                5977
ARIN Region transit ASes present in the Internet Routing Table:    1634
Average ARIN Region AS path length visible:                         4.1
    Max ARIN Region AS path length visible:                          27
Number of ARIN region 32-bit ASNs visible in the Routing Table:      19
Number of ARIN addresses announced to Internet:              1062085504
    Equivalent to 63 /8s, 78 /16s and 35 /24s
    Percentage of available ARIN address space announced:          56.2

ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 393216-394239
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  45/8,  47/8,  48/8,  50/8,  52/8,
                        53/8,  54/8,  55/8,  56/8,  57/8,  63/8,  64/8,
                        65/8,  66/8,  67/8,  68/8,  69/8,  70/8,  71/8,
                        72/8,  73/8,  74/8,  75/8,  76/8,  96/8,  97/8,
                        98/8,  99/8, 100/8, 104/8, 107/8, 108/8, 128/8,
                       129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8,
                       137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8,
                       146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8,
                       157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8,
                       165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8,
                       173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8,
                       205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8,
                       216/8,

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                    117001
    Total RIPE prefixes after maximum aggregation:                59797
    RIPE Deaggregation factor:                                     1.96
Prefixes being announced from the RIPE address blocks:           120559
    Unique aggregates announced from the RIPE address blocks:     77886
RIPE Region origin ASes present in the Internet Routing Table:    17174
    RIPE Prefixes per ASN:                                         7.02
RIPE Region origin ASes announcing only one prefix:                8142
RIPE Region transit ASes present in the Internet Routing Table:    2800
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          29
Number of RIPE region 32-bit ASNs visible in the Routing Table:    2332
Number of RIPE addresses announced to Internet:               656203364
    Equivalent to 39 /8s, 28 /16s and 222 /24s
    Percentage of available RIPE address space announced:          95.4

RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 196608-199679
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   47606
    Total LACNIC prefixes after maximum aggregation:               9289
    LACNIC Deaggregation factor:                                   5.12
Prefixes being announced from the LACNIC address blocks:          51794
    Unique aggregates announced from the LACNIC address blocks:   24339
LACNIC Region origin ASes present in the Internet Routing Table:   1932
    LACNIC Prefixes per ASN:                                      26.81
LACNIC Region origin ASes announcing only one prefix:               573
LACNIC Region transit ASes present in the Internet Routing Table:   353
Average LACNIC Region AS path length visible:                       4.8
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   760
Number of LACNIC addresses announced to Internet:             129090344
    Equivalent to 7 /8s, 177 /16s and 195 /24s
    Percentage of available LACNIC address space announced:        76.9

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-62463, 262144-263167 plus ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                  10824
    Total AfriNIC prefixes after maximum aggregation:              2492
    AfriNIC Deaggregation factor:                                  4.34
Prefixes being announced from the AfriNIC address blocks:         11379
    Unique aggregates announced from the AfriNIC address blocks:   3870
AfriNIC Region origin ASes present in the Internet Routing Table:   625
    AfriNIC Prefixes per ASN:                                     18.21
AfriNIC Region origin ASes announcing only one prefix:              184
AfriNIC Region transit ASes present in the Internet Routing Table:  134
Average AfriNIC Region AS path length visible:                      4.7
    Max AfriNIC Region AS path length visible:                       18
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    6
Number of AfriNIC addresses announced to Internet:             46428416
    Equivalent to 2 /8s, 196 /16s and 113 /24s
    Percentage of available AfriNIC address space announced:       46.1

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 102/8, 105/8, 154/8, 196/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     2958      11559         924   Korea Telecom (KIX)
17974     2513        839          90   PT TELEKOMUNIKASI INDONESIA
 7545     1980        320         108   TPG Internet Pty Ltd
 4755     1729        391         192   TATA Communications formerly 
 9829     1510       1205          40   BSNL National Internet Backbo
 9583     1219         91         502   Sify Limited
 7552     1171       1064          12   Vietel Corporation
 4808     1121       2112         328   CNCGROUP IP network: China169
 9498     1109        309          71   BHARTI Airtel Ltd.
24560     1069        393         166   Bharti Airtel Ltd., Telemedia

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3020       3693          81   bellsouth.net, inc. 
 7029     2143       1265         211   Windstream Communications Inc
18566     2067        382         184   Covad Communications 
 1785     1989        677         123   PaeTec Communications, Inc.
22773     1974       2929         125   Cox Communications, Inc.
20115     1668       1608         617   Charter Communications 
 4323     1620       1139         401   Time Warner Telecom
30036     1327        295         643   Mediacom Communications Corp 
 7018     1311      10819         848   AT&T WorldNet Services
11492     1231        220         345   Cable One 

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8402     1773        544          16   Corbina telecom
 2118     1309         97          13   EUnet/RELCOM Autonomous Syste
34984     1204        240         228   BILISIM TELEKOM
20940      832        286         659   Akamai Technologies European 
13188      820         97          84   Educational Network
31148      792         39          22   FreeNet ISP
 8551      772        370          43   Bezeq International
 6830      770       2376         443   UPC Distribution Services
12479      686        782          67   Uni2 Autonomous System
34744      676        173          56   SC GVM SISTEM 2003 SRL

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
28573     2732       1528         113   NET Servicos de Comunicao S.A
10620     2631        412         224   TVCABLE BOGOTA 
 7303     1723       1153         221   Telecom Argentina Stet-France
 8151     1247       2705         394   UniNet S.A. de C.V. 
 6503      979        435          68   AVANTEL, S.A. 
18881      940        780          19   Global Village Telecom 
27947      840         89          99   Telconet S.A
 3816      706        306          85   Empresa Nacional de Telecomun
 7738      698       1370          35   Telecomunicacoes da Bahia S.A
11172      608         87          64   Servicios Alestra S.A de C.V 

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
36998     1237         80           4   MOBITEL
24863      885        274          32   LINKdotNET AS number
 6713      542        617          25   Itissalat Al-MAGHRIB
 8452      445        956           9   TEDATA
24835      344         80           8   RAYA Telecom - Egypt
 3741      261        906         220   The Internet Solution 
15706      222         32           6   Sudatel Internet Exchange Aut
12258      193         28          67   Vodacom Internet Company 
29975      191        667          21   Vodacom
36992      189        527          22   Etisalat MISR

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3020       3693          81   bellsouth.net, inc. 
 4766     2958      11559         924   Korea Telecom (KIX)
28573     2732       1528         113   NET Servicos de Comunicao S.A
10620     2631        412         224   TVCABLE BOGOTA 
17974     2513        839          90   PT TELEKOMUNIKASI INDONESIA
 7029     2143       1265         211   Windstream Communications Inc
18566     2067        382         184   Covad Communications 
 1785     1989        677         123   PaeTec Communications, Inc.
 7545     1980        320         108   TPG Internet Pty Ltd
22773     1974       2929         125   Cox Communications, Inc.

Complete listing at http://thyme.rand.apnic.net/current/data-ASnet

Global Per AS Maximum Aggr summary
----------------------------------

  ASN   No of nets  Net Savings Description
28573      2732        2619      NET Servicos de Comunicao S.A
17974      2513        2423      PT TELEKOMUNIKASI INDONESIA
10620      2631        2407      TVCABLE BOGOTA 
 4766      2958        2034      Korea Telecom (KIX)
 7029      2143        1932      Windstream Communications Inc
18566      2067        1883      Covad Communications 
 7545      1980        1872      TPG Internet Pty Ltd
 1785      1989        1866      PaeTec Communications, Inc.
22773      1974        1849      Cox Communications, Inc.
 8402      1773        1757      Corbina telecom

Complete listing at http://thyme.rand.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS  Designation  Network              Transit AS  Description
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic
30031   UNALLOCATED  12.27.122.0/24        7018       AT&T WorldNet Servic
13317   UNALLOCATED  12.44.10.0/24         7018       AT&T WorldNet Servic
23502   UNALLOCATED  12.44.44.0/24         7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.103.0/24         209       Qwest 
17300   UNALLOCATED  12.45.110.0/24         701       UUNET Technologies, 
16476   UNALLOCATED  12.46.27.0/24         7018       AT&T WorldNet Servic
14764   UNALLOCATED  12.108.237.0/24       7018       AT&T WorldNet Servic
33649   UNALLOCATED  12.111.112.0/24      19029       New Edge Networks 
26064   UNALLOCATED  12.149.37.0/24        7018       AT&T WorldNet Servic

Complete listing at http://thyme.rand.apnic.net/current/data-badAS

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix             Origin AS  Description
128.0.0.0/24          2876     Jump Management SRL
128.0.16.0/21        43568     RIPE Network Coordination Cen
128.0.24.0/21        41794     Altline LLC
128.0.46.0/23        39743     Mobimax Telecom SRL
128.0.52.0/24        60906     NETOPIA SRL
128.0.58.0/23         9050     RTD-ROMTELECOM Autonomous Sys
128.0.60.0/24         9050     RTD-ROMTELECOM Autonomous Sys
128.0.61.0/24         9050     RTD-ROMTELECOM Autonomous Sys
128.0.62.0/24         9050     RTD-ROMTELECOM Autonomous Sys
128.0.63.0/24         9050     RTD-ROMTELECOM Autonomous Sys

Complete listing at http://thyme.rand.apnic.net/current/data-dsua

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 
64.185.224.0/24      27431     JTL Networks Inc.
64.185.225.0/24      27431     JTL Networks Inc.
64.185.226.0/24      27431     JTL Networks Inc.
64.185.227.0/24      27431     JTL Networks Inc.
64.185.228.0/24      27431     JTL Networks Inc.
64.185.229.0/24      27431     JTL Networks Inc.
64.185.230.0/24      27431     JTL Networks Inc.
64.185.231.0/24      27431     JTL Networks Inc.

Complete listing at http://thyme.rand.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:30      /11:87      /12:248     
/13:490     /14:882     /15:1567    /16:12689   /17:6625    /18:11182   
/19:22118   /20:32017   /21:34142   /22:47283   /23:42242   /24:239077  
/25:1308    /26:1689    /27:868     /28:44      /29:66      /30:18      
/31:0       /32:18      

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

  ASN   No of nets  Total ann.   Description
18566     2018          2067      Covad Communications 
 6389     1733          3020      bellsouth.net, inc. 
 7029     1611          2143      Windstream Communications Inc
 8402     1469          1773      Corbina telecom
22773     1283          1974      Cox Communications, Inc.
36998     1231          1237      MOBITEL
30036     1197          1327      Mediacom Communications Corp 
11492     1192          1231      Cable One 
 1785     1062          1989      PaeTec Communications, Inc.
 6983     1008          1134      ITC^Deltacom 

Complete listing at http://thyme.rand.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:803       2:756       3:3         4:15        5:879       6:7      
   8:557      12:1933     13:3        14:820      15:11       16:3      
  17:9        20:17       23:281      24:1767     27:1511     31:1286   
  32:43       33:2        34:5        36:28       37:1849     38:875    
  39:2        40:172      41:2785     42:192      44:6        46:1897   
  47:2        49:637      50:708      52:12       54:35       55:7      
  57:26       58:1141     59:571      60:313      61:1391     62:1090   
  63:2026     64:4327     65:2195     66:4359     67:2063     68:1128   
  69:3279     70:880      71:537      72:1924     74:2559     75:416    
  76:308      77:1111     78:1046     79:591      80:1255     81:994    
  82:624      83:557      84:530      85:1161     86:462      87:980    
  88:536      89:1792     90:162      91:5478     92:587      93:1706   
  94:1833     95:1490     96:529      97:344      98:1053     99:41     
 100:31      101:329     103:2593    105:519     106:153     107:209    
 108:520     109:1851    110:882     111:1053    112:516     113:799    
 114:710     115:946     116:912     117:789     118:1073    119:1287   
 120:408     121:724     122:1795    123:1215    124:1348    125:1354   
 128:637     129:224     130:325     131:653     132:341     133:149    
 134:262     135:66      136:221     137:265     138:345     139:197    
 140:207     141:327     142:549     143:382     144:485     145:92     
 146:514     147:405     148:696     149:373     150:160     151:569    
 152:418     153:199     154:43      155:394     156:264     157:399    
 158:277     159:729     160:357     161:427     162:434     163:218    
 164:594     165:450     166:300     167:585     168:1037    169:133    
 170:1026    171:178     172:22      173:1668    174:592     175:489    
 176:1291    177:2035    178:1875    179:6       180:1431    181:388    
 182:1210    183:379     184:677     185:438     186:2272    187:1322   
 188:2145    189:1358    190:6310    192:6653    193:5865    194:4630   
 195:3420    196:1332    197:906     198:4462    199:5290    200:5924   
 201:2252    202:8874    203:8844    204:4507    205:2569    206:2841   
 207:2897    208:4072    209:3623    210:2957    211:1559    212:2107   
 213:1952    214:914     215:98      216:5241    217:1605    218:615    
 219:330     220:1279    221:555     222:319     223:442    

End of report



More information about the NANOG mailing list