Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 3 18:33:43 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 04 May, 2013

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

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

BGP routing table entries examined:                              453510
    Prefixes after maximum aggregation:                          185040
    Deaggregation factor:                                          2.45
    Unique aggregates announced to Internet:                     223585
Total ASes present in the Internet Routing Table:                 44001
    Prefixes per ASN:                                             10.31
Origin-only ASes present in the Internet Routing Table:           34568
Origin ASes announcing only one prefix:                           16101
Transit ASes present in the Internet Routing Table:                5821
Transit-only ASes present in the Internet Routing Table:            148
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:               317
    Unregistered ASNs in the Routing Table:                         133
Number of 32-bit ASNs allocated by the RIRs:                       4753
Number of 32-bit ASNs visible in the Routing Table:                3612
Prefixes from 32-bit ASNs in the Routing Table:                   10306
Special use prefixes present in the Routing Table:                   22
Prefixes being announced from unallocated address space:            192
Number of addresses announced to Internet:                   2616629196
    Equivalent to 155 /8s, 246 /16s and 151 /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:               94.4
Total number of prefixes smaller than registry allocations:      160134

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

Prefixes being announced by APNIC Region ASes:                   108607
    Total APNIC prefixes after maximum aggregation:               33426
    APNIC Deaggregation factor:                                    3.25
Prefixes being announced from the APNIC address blocks:          109908
    Unique aggregates announced from the APNIC address blocks:    44627
APNIC Region origin ASes present in the Internet Routing Table:    4840
    APNIC Prefixes per ASN:                                       22.71
APNIC Region origin ASes announcing only one prefix:               1228
APNIC Region transit ASes present in the Internet Routing Table:    818
Average APNIC Region AS path length visible:                        4.8
    Max APNIC Region AS path length visible:                         30
Number of APNIC region 32-bit ASNs visible in the Routing Table:    516
Number of APNIC addresses announced to Internet:              720862688
    Equivalent to 42 /8s, 247 /16s and 125 /24s
    Percentage of available APNIC address space announced:         84.2

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:                    159060
    Total ARIN prefixes after maximum aggregation:                80079
    ARIN Deaggregation factor:                                     1.99
Prefixes being announced from the ARIN address blocks:           159679
    Unique aggregates announced from the ARIN address blocks:     73184
ARIN Region origin ASes present in the Internet Routing Table:    15672
    ARIN Prefixes per ASN:                                        10.19
ARIN Region origin ASes announcing only one prefix:                5962
ARIN Region transit ASes present in the Internet Routing Table:    1622
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:      18
Number of ARIN addresses announced to Internet:              1063469184
    Equivalent to 63 /8s, 99 /16s and 64 /24s
    Percentage of available ARIN address space announced:          56.3

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:                    116889
    Total RIPE prefixes after maximum aggregation:                59658
    RIPE Deaggregation factor:                                     1.96
Prefixes being announced from the RIPE address blocks:           120453
    Unique aggregates announced from the RIPE address blocks:     77565
RIPE Region origin ASes present in the Internet Routing Table:    17160
    RIPE Prefixes per ASN:                                         7.02
RIPE Region origin ASes announcing only one prefix:                8154
RIPE Region transit ASes present in the Internet Routing Table:    2801
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:    2313
Number of RIPE addresses announced to Internet:               657143652
    Equivalent to 39 /8s, 43 /16s and 55 /24s
    Percentage of available RIPE address space announced:          95.5

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:                   47736
    Total LACNIC prefixes after maximum aggregation:               9316
    LACNIC Deaggregation factor:                                   5.12
Prefixes being announced from the LACNIC address blocks:          51868
    Unique aggregates announced from the LACNIC address blocks:   24181
LACNIC Region origin ASes present in the Internet Routing Table:   1915
    LACNIC Prefixes per ASN:                                      27.09
LACNIC Region origin ASes announcing only one prefix:               566
LACNIC Region transit ASes present in the Internet Routing Table:   354
Average LACNIC Region AS path length visible:                       4.7
    Max LACNIC Region AS path length visible:                        29
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   759
Number of LACNIC addresses announced to Internet:             128404232
    Equivalent to 7 /8s, 167 /16s and 75 /24s
    Percentage of available LACNIC address space announced:        76.5

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:                  10828
    Total AfriNIC prefixes after maximum aggregation:              2521
    AfriNIC Deaggregation factor:                                  4.30
Prefixes being announced from the AfriNIC address blocks:         11410
    Unique aggregates announced from the AfriNIC address blocks:   3851
AfriNIC Region origin ASes present in the Internet Routing Table:   627
    AfriNIC Prefixes per ASN:                                     18.20
AfriNIC Region origin ASes announcing only one prefix:              191
AfriNIC Region transit ASes present in the Internet Routing Table:  135
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:             46413568
    Equivalent to 2 /8s, 196 /16s and 55 /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     2943      11557         920   Korea Telecom (KIX)
17974     2512        839          90   PT TELEKOMUNIKASI INDONESIA
 7545     1897        320         109   TPG Internet Pty Ltd
 4755     1726        390         190   TATA Communications formerly 
 9829     1508       1205          40   BSNL National Internet Backbo
 9583     1285         98         533   Sify Limited
 7552     1175       1064          12   Vietel Corporation
 4808     1118       2113         328   CNCGROUP IP network: China169
 9498     1098        310          73   BHARTI Airtel Ltd.
24560     1072        393         167   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     3022       3693          84   bellsouth.net, inc. 
 7029     2144       1265         211   Windstream Communications Inc
18566     2067        382         184   Covad Communications 
 1785     1992        677         125   PaeTec Communications, Inc.
22773     1971       2929         125   Cox Communications, Inc.
20115     1670       1610         613   Charter Communications 
 4323     1608       1139         399   Time Warner Telecom
30036     1335        297         653   Mediacom Communications Corp 
 7018     1313      10821         849   AT&T WorldNet Services
11492     1240        228         330   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     1753        544          16   Corbina telecom
 2118     1390         97          13   EUnet/RELCOM Autonomous Syste
34984     1173        237         215   BILISIM TELEKOM
12479      840        785          66   Uni2 Autonomous System
13188      834         99          64   Educational Network
20940      832        291         657   Akamai Technologies European 
31148      794         41          21   FreeNet ISP
 6830      770       2376         443   UPC Distribution Services
 8551      753        369          50   Bezeq International
34744      672        180          53   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     2688       1470         108   NET Servicos de Comunicao S.A
10620     2617        410         222   TVCABLE BOGOTA 
 7303     1689       1157         219   Telecom Argentina Stet-France
 8151     1239       2700         391   UniNet S.A. de C.V. 
 6503     1014        435          68   AVANTEL, S.A. 
18881      914        780          19   Global Village Telecom 
27947      817         88          95   Telconet S.A
11830      716        364          14   Instituto Costarricense de El
 7738      698       1370          35   Telecomunicacoes da Bahia S.A
 3816      697        306          85   Empresa Nacional de Telecomun

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      887        274          34   LINKdotNET AS number
 6713      542        617          25   Itissalat Al-MAGHRIB
 8452      458        956           9   TEDATA
24835      344         80           8   RAYA Telecom - Egypt
 3741      262        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          21   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     3022       3693          84   bellsouth.net, inc. 
 4766     2943      11557         920   Korea Telecom (KIX)
28573     2688       1470         108   NET Servicos de Comunicao S.A
10620     2617        410         222   TVCABLE BOGOTA 
17974     2512        839          90   PT TELEKOMUNIKASI INDONESIA
 7029     2144       1265         211   Windstream Communications Inc
18566     2067        382         184   Covad Communications 
 1785     1992        677         125   PaeTec Communications, Inc.
22773     1971       2929         125   Cox Communications, Inc.
 7545     1897        320         109   TPG Internet Pty Ltd

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      2688        2580      NET Servicos de Comunicao S.A
17974      2512        2422      PT TELEKOMUNIKASI INDONESIA
10620      2617        2395      TVCABLE BOGOTA 
 4766      2943        2023      Korea Telecom (KIX)
 7029      2144        1933      Windstream Communications Inc
18566      2067        1883      Covad Communications 
 1785      1992        1867      PaeTec Communications, Inc.
22773      1971        1846      Cox Communications, Inc.
 7545      1897        1788      TPG Internet Pty Ltd
 8402      1753        1737      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
128.0.52.0/24        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
128.0.72.0/21        23456     32-bit ASN transition

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

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

Network            Origin AS  Description
41.222.80.0/21       37110     Moztel LDA
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.

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      /10:29      /11:87      /12:250     
/13:491     /14:887     /15:1567    /16:12692   /17:6631    /18:11109   
/19:22112   /20:31995   /21:34054   /22:47248   /23:42085   /24:238107  
/25:1366    /26:1757    /27:868     /28:43      /29:67      /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     1729          3022      bellsouth.net, inc. 
 7029     1606          2144      Windstream Communications Inc
 8402     1457          1753      Corbina telecom
22773     1281          1971      Cox Communications, Inc.
36998     1231          1237      MOBITEL
30036     1208          1335      Mediacom Communications Corp 
11492     1199          1240      Cable One 
 1785     1061          1992      PaeTec Communications, Inc.
 6983     1007          1133      ITC^Deltacom 

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

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

   1:782       2:747       3:3         4:15        5:880       6:7      
   8:552      12:1919     13:3        14:777      15:11       16:3      
  17:9        20:18       23:274      24:1762     27:1503     31:1272   
  32:43       33:2        34:5        36:44       37:1818     38:869    
  39:2        40:172      41:2794     42:187      44:6        46:1888   
  47:2        49:630      50:684      52:12       54:32       55:8      
  57:26       58:1139     59:568      60:306      61:1391     62:1061   
  63:2040     64:4324     65:2173     66:4319     67:2051     68:1129   
  69:3250     70:873      71:536      72:1943     74:2548     75:410    
  76:292      77:1108     78:1052     79:581      80:1264     81:979    
  82:623      83:557      84:526      85:1167     86:462      87:979    
  88:539      89:1791     90:280      91:5497     92:633      93:1724   
  94:1855     95:1522     96:526      97:342      98:1051     99:41     
 100:30      101:320     103:2533    105:535     106:144     107:209    
 108:519     109:1842    110:871     111:1050    112:509     113:784    
 114:705     115:934     116:897     117:790     118:1056    119:1261   
 120:402     121:721     122:1771    123:1234    124:1351    125:1338   
 128:632     129:223     130:323     131:649     132:339     133:149    
 134:253     135:66      136:222     137:250     138:346     139:196    
 140:207     141:323     142:549     143:382     144:493     145:92     
 146:508     147:390     148:691     149:371     150:158     151:569    
 152:414     153:195     154:43      155:401     156:265     157:402    
 158:276     159:726     160:339     161:421     162:414     163:212    
 164:591     165:448     166:304     167:582     168:1027    169:133    
 170:1029    171:178     172:4       173:1604    174:586     175:464    
 176:1281    177:1949    178:1839    179:5       180:1411    181:420    
 182:1147    183:384     184:674     185:408     186:2322    187:1304   
 188:2045    189:1358    190:6319    192:6569    193:5842    194:4667   
 195:3456    196:1339    197:906     198:4409    199:5292    200:5928   
 201:2408    202:8844    203:8819    204:4515    205:2565    206:2835   
 207:2883    208:4055    209:3611    210:2942    211:1552    212:2063   
 213:1914    214:911     215:98      216:5250    217:1568    218:618    
 219:331     220:1276    221:555     222:319     223:443    

End of report



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