Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 21 18:47:17 UTC 2012


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 22 Sep, 2012

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

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

BGP routing table entries examined:                              427480
    Prefixes after maximum aggregation:                          178522
    Deaggregation factor:                                          2.39
    Unique aggregates announced to Internet:                     208854
Total ASes present in the Internet Routing Table:                 42150
    Prefixes per ASN:                                             10.14
Origin-only ASes present in the Internet Routing Table:           33623
Origin ASes announcing only one prefix:                           15762
Transit ASes present in the Internet Routing Table:                5619
Transit-only ASes present in the Internet Routing Table:            136
Average AS path length visible in the Internet Routing Table:       4.6
    Max AS path length visible:                                      32
    Max AS path prepend of ASN ( 48687)                              24
Prefixes from unregistered ASNs in the Routing Table:               736
    Unregistered ASNs in the Routing Table:                         268
Number of 32-bit ASNs allocated by the RIRs:                       3307
Number of 32-bit ASNs visible in the Routing Table:                2908
Prefixes from 32-bit ASNs in the Routing Table:                    7789
Special use prefixes present in the Routing Table:                    9
Prefixes being announced from unallocated address space:            170
Number of addresses announced to Internet:                   2597807124
    Equivalent to 154 /8s, 215 /16s and 100 /24s
    Percentage of available address space announced:               70.2
    Percentage of allocated address space announced:               70.2
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               93.7
Total number of prefixes smaller than registry allocations:      150657

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

Prefixes being announced by APNIC Region ASes:                   102817
    Total APNIC prefixes after maximum aggregation:               32533
    APNIC Deaggregation factor:                                    3.16
Prefixes being announced from the APNIC address blocks:          103474
    Unique aggregates announced from the APNIC address blocks:    42726
APNIC Region origin ASes present in the Internet Routing Table:    4760
    APNIC Prefixes per ASN:                                       21.74
APNIC Region origin ASes announcing only one prefix:               1238
APNIC Region transit ASes present in the Internet Routing Table:    768
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:    316
Number of APNIC addresses announced to Internet:              708467008
    Equivalent to 42 /8s, 58 /16s and 89 /24s
    Percentage of available APNIC address space announced:         82.8

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:                    154454
    Total ARIN prefixes after maximum aggregation:                78148
    ARIN Deaggregation factor:                                     1.98
Prefixes being announced from the ARIN address blocks:           155396
    Unique aggregates announced from the ARIN address blocks:     69131
ARIN Region origin ASes present in the Internet Routing Table:    15249
    ARIN Prefixes per ASN:                                        10.19
ARIN Region origin ASes announcing only one prefix:                5758
ARIN Region transit ASes present in the Internet Routing Table:    1599
Average ARIN Region AS path length visible:                         4.1
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:      17
Number of ARIN addresses announced to Internet:              1084628608
    Equivalent to 64 /8s, 166 /16s and 30 /24s
    Percentage of available ARIN address space announced:          57.4

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:                    108700
    Total RIPE prefixes after maximum aggregation:                57005
    RIPE Deaggregation factor:                                     1.91
Prefixes being announced from the RIPE address blocks:           111222
    Unique aggregates announced from the RIPE address blocks:     71031
RIPE Region origin ASes present in the Internet Routing Table:    16856
    RIPE Prefixes per ASN:                                         6.60
RIPE Region origin ASes announcing only one prefix:                8154
RIPE Region transit ASes present in the Internet Routing Table:    2720
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          32
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1889
Number of RIPE addresses announced to Internet:               646098660
    Equivalent to 38 /8s, 130 /16s and 174 /24s
    Percentage of available RIPE address space announced:          93.9

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:                   43822
    Total LACNIC prefixes after maximum aggregation:               8560
    LACNIC Deaggregation factor:                                   5.12
Prefixes being announced from the LACNIC address blocks:          46964
    Unique aggregates announced from the LACNIC address blocks:   22336
LACNIC Region origin ASes present in the Internet Routing Table:   1646
    LACNIC Prefixes per ASN:                                      28.53
LACNIC Region origin ASes announcing only one prefix:               440
LACNIC Region transit ASes present in the Internet Routing Table:   319
Average LACNIC Region AS path length visible:                       4.7
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   680
Number of LACNIC addresses announced to Internet:             116497520
    Equivalent to 6 /8s, 241 /16s and 156 /24s
    Percentage of available LACNIC address space announced:        69.4

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       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:                   9773
    Total AfriNIC prefixes after maximum aggregation:              2218
    AfriNIC Deaggregation factor:                                  4.41
Prefixes being announced from the AfriNIC address blocks:         10254
    Unique aggregates announced from the AfriNIC address blocks:   3489
AfriNIC Region origin ASes present in the Internet Routing Table:   561
    AfriNIC Prefixes per ASN:                                     18.28
AfriNIC Region origin ASes announcing only one prefix:              172
AfriNIC Region transit ASes present in the Internet Routing Table:  128
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    6
Number of AfriNIC addresses announced to Internet:             41815296
    Equivalent to 2 /8s, 126 /16s and 13 /24s
    Percentage of available AfriNIC address space announced:       41.5

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     2977      11429         901   Korea Telecom (KIX)
17974     2356        702          54   PT TELEKOMUNIKASI INDONESIA
 7545     1760        301          87   TPG Internet Pty Ltd
 4755     1620        387         162   TATA Communications formerly 
 9829     1335       1106          41   BSNL National Internet Backbo
 9583     1180         87         513   Sify Limited
 7552     1136       1062          11   Vietel Corporation
 4808     1119       2044         317   CNCGROUP IP network: China169
24560     1041        386         160   Bharti Airtel Ltd., Telemedia
18101     1015        135         169   Reliance Infocom Ltd Internet

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     3311       3733         186   bellsouth.net, inc. 
 7029     3164        990         161   Windstream Communications Inc
18566     2084        382         180   Covad Communications 
 1785     1916        678         128   PaeTec Communications, Inc.
22773     1884       2931         129   Cox Communications, Inc.
20115     1661       1580         614   Charter Communications 
 4323     1575       1153         386   Time Warner Telecom
30036     1379        273         739   Mediacom Communications Corp 
 7018     1249      10318         832   AT&T WorldNet Services
 7011     1204        329         698   Citizens Utilities 

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     1594        544          16   Corbina telecom
 2118     1399         97          14   EUnet/RELCOM Autonomous Syste
15557     1229       2247          55   LDCOM NETWORKS
12479      839        774          77   Uni2 Autonomous System
34984      774        206         181   BILISIM TELEKOM
 6830      724       2313         448   UPC Distribution Services
20940      709        225         544   Akamai Technologies European 
31148      709         37           9   FreeNet ISP
13188      691         92         162   Educational Network
58113      631         70         366   LIR DATACENTER TELECOM 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
10620     2164        370         219   TVCABLE BOGOTA 
28573     2137       1249          55   NET Servicos de Comunicao S.A
 8151     1588       3045         345   UniNet S.A. de C.V. 
 7303     1564       1034         200   Telecom Argentina Stet-France
 6503     1536        435          68   AVANTEL, S.A. 
27947      725         74          94   Telconet S.A
 6458      681         81          15   GUATEL 
 3816      623        258         114   Empresa Nacional de Telecomun
11172      595         85          69   Servicios Alestra S.A de C.V 
14420      587         86         101   CORPORACION NACIONAL DE TELEC

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
24863      882        275          36   LINKdotNET AS number
 8452      796        958          13   TEDATA
36998      772         48           3   MOBITEL
 6713      517        650          19   Itissalat Al-MAGHRIB
24835      269         80           8   RAYA Telecom - Egypt
 3741      264        904         224   The Internet Solution 
12258      194         28          66   Vodacom Internet Company 
15706      192         32           6   Sudatel Internet Exchange Aut
29975      191        667          21   Vodacom
33776      179         13          11   Starcomms Nigeria Limited

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     3311       3733         186   bellsouth.net, inc. 
 7029     3164        990         161   Windstream Communications Inc
 4766     2977      11429         901   Korea Telecom (KIX)
17974     2356        702          54   PT TELEKOMUNIKASI INDONESIA
10620     2164        370         219   TVCABLE BOGOTA 
28573     2137       1249          55   NET Servicos de Comunicao S.A
18566     2084        382         180   Covad Communications 
 1785     1916        678         128   PaeTec Communications, Inc.
22773     1884       2931         129   Cox Communications, Inc.
 7545     1760        301          87   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
 7029      3164        3003      Windstream Communications Inc
17974      2356        2302      PT TELEKOMUNIKASI INDONESIA
28573      2137        2082      NET Servicos de Comunicao S.A
 4766      2977        2076      Korea Telecom (KIX)
10620      2164        1945      TVCABLE BOGOTA 
18566      2084        1904      Covad Communications 
 1785      1916        1788      PaeTec Communications, Inc.
22773      1884        1755      Cox Communications, Inc.
 7545      1760        1673      TPG Internet Pty Ltd
 8402      1594        1578      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
59505   UNALLOCATED  5.2.65.0/24          50673       Serverius AS
59505   UNALLOCATED  5.2.66.0/24          50673       Serverius AS
59414   UNALLOCATED  5.102.144.0/21       15576       Nextra backbone in D
59395   UNALLOCATED  5.133.16.0/21        12658       Dexterity Networks L
59407   UNALLOCATED  5.134.16.0/21        51167       Giga-Hosting GmbH
59521   UNALLOCATED  5.134.192.0/21       29518       Labs2
59441   UNALLOCATED  5.144.128.0/21       50810       Mobin Net Communicat
59581   UNALLOCATED  5.149.8.0/21         25577       C4L main AS
59457   UNALLOCATED  5.149.64.0/24        35567       DASTO semtel d.o.o.
59457   UNALLOCATED  5.149.64.0/19        35567       DASTO semtel d.o.o.

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

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

Prefix             Origin AS  Description
128.0.24.0/21        41794     Altline LLC
128.0.64.0/22        49466     Declic Telecom SAS
128.0.68.0/22        49466     Declic Telecom SAS
128.0.80.0/20        52041     Timer LTD
128.0.160.0/21       23456     32-bit ASN transition
128.0.168.0/21       15772     W-NET Kiev
128.0.170.0/24       24685     ISP Elencom autonomous system
128.0.176.0/20       30764     PODA s.r.o.
128.0.192.0/21       51483     SaSG GmbH & Co. KG

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

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

Network            Origin AS  Description
14.192.0.0/22        45464     Room 201, TGU Bldg
14.192.4.0/22        45464     Room 201, TGU Bldg
14.192.8.0/22        45464     Room 201, TGU Bldg
14.192.12.0/22       45464     Room 201, TGU Bldg
14.192.16.0/22       45464     Room 201, TGU Bldg
14.192.20.0/22       45464     Room 201, TGU Bldg
14.192.24.0/22       45464     Room 201, TGU Bldg
14.192.28.0/22       45464     Room 201, TGU Bldg
27.112.114.0/24      23884     Proimage Engineering and Comm
41.220.80.0/24       38925     DAC AS Germany

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        /8:18       /9:14      /10:29      /11:84      /12:237     
/13:476     /14:841     /15:1548    /16:12409   /17:6470    /18:10855   
/19:21100   /20:30284   /21:32205   /22:42557   /23:39934   /24:224158  
/25:1390    /26:1668    /27:921     /28:176     /29:64      /30:18      
/31:0       /32:24      

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

  ASN   No of nets  Total ann.   Description
 7029     2646          3164      Windstream Communications Inc
18566     2034          2084      Covad Communications 
 6389     1841          3311      bellsouth.net, inc. 
30036     1313          1379      Mediacom Communications Corp 
 8402     1308          1594      Corbina telecom
22773     1227          1884      Cox Communications, Inc.
15557     1173          1229      LDCOM NETWORKS
11492     1161          1198      Cable One 
 6503     1054          1536      AVANTEL, S.A. 
 1785     1015          1916      PaeTec Communications, Inc.

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

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

   1:622       2:613       3:1         4:13        5:507       6:3      
   8:457      12:1987     13:1        14:665      15:11       16:3      
  17:6        20:27       23:206      24:1790     27:1334     31:1013   
  32:54       33:2        34:2        36:7        37:791      38:832    
  39:2        40:133      41:3023     42:158      44:3        46:1587   
  47:2        49:481      50:596      52:13       54:20       55:9      
  56:1        57:30       58:990      59:539      60:237      61:1288   
  62:979      63:1996     64:4268     65:2240     66:4511     67:2052   
  68:1167     69:3233     70:982      71:509      72:1872     74:2602   
  75:485      76:314      77:967      78:956      79:493      80:1268   
  81:964      82:633      83:528      84:625      85:1152     86:809    
  87:918      88:363      89:1792     90:304      91:5212     92:576    
  93:1540     94:1617     95:1118     96:418      97:320      98:979    
  99:39      100:23      101:262     103:1548    105:512     106:118    
 107:198     108:456     109:1950    110:802     111:1001    112:449    
 113:699     114:633     115:879     116:893     117:728     118:965    
 119:1261    120:307     121:689     122:1642    123:1169    124:1332   
 125:1275    128:561     129:184     130:282     131:632     132:310    
 133:22      134:250     135:61      136:217     137:239     138:338    
 139:171     140:497     141:281     142:485     143:377     144:489    
 145:81      146:518     147:261     148:761     149:323     150:155    
 151:172     152:449     153:178     154:20      155:420     156:226    
 157:372     158:261     159:654     160:342     161:413     162:364    
 163:191     164:693     165:421     166:528     167:552     168:965    
 169:125     170:906     171:161     172:7       173:1693    174:608    
 175:447     176:794     177:1227    178:1605    180:1362    181:136    
 182:1053    183:296     184:604     185:2       186:2184    187:1242   
 188:1674    189:1583    190:6040    192:6034    193:5717    194:4564   
 195:3475    196:1220    197:220     198:3806    199:5020    200:6002   
 201:1973    202:8721    203:8730    204:4426    205:2545    206:2761   
 207:2875    208:4071    209:3668    210:2844    211:1527    212:1997   
 213:1829    214:879     215:87      216:5123    217:1538    218:567    
 219:315     220:1246    221:536     222:336     223:390    

End of report



More information about the NANOG mailing list