Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Nov 12 12:26:23 CST 2010


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,
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 <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 13 Nov, 2010

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

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

BGP routing table entries examined:                              337475
    Prefixes after maximum aggregation:                          153810
    Deaggregation factor:                                          2.19
    Unique aggregates announced to Internet:                     165548
Total ASes present in the Internet Routing Table:                 35234
    Prefixes per ASN:                                              9.58
Origin-only ASes present in the Internet Routing Table:           30369
Origin ASes announcing only one prefix:                           14826
Transit ASes present in the Internet Routing Table:                4865
Transit-only ASes present in the Internet Routing Table:            117
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      31
    Max AS path prepend of ASN (36992)                               29
Prefixes from unregistered ASNs in the Routing Table:               295
    Unregistered ASNs in the Routing Table:                         124
Number of 32-bit ASNs allocated by the RIRs:                        880
Prefixes from 32-bit ASNs in the Routing Table:                       4
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            195
Number of addresses announced to Internet:                   2298665376
    Equivalent to 137 /8s, 2 /16s and 217 /24s
    Percentage of available address space announced:               62.0
    Percentage of allocated address space announced:               65.6
    Percentage of available address space allocated:               94.6
    Percentage of address space in use by end-sites:               85.9
Total number of prefixes smaller than registry allocations:      139046

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

Prefixes being announced by APNIC Region ASes:                    82694
    Total APNIC prefixes after maximum aggregation:               28127
    APNIC Deaggregation factor:                                    2.94
Prefixes being announced from the APNIC address blocks:           79584
    Unique aggregates announced from the APNIC address blocks:    34871
APNIC Region origin ASes present in the Internet Routing Table:    4237
    APNIC Prefixes per ASN:                                       18.78
APNIC Region origin ASes announcing only one prefix:               1178
APNIC Region transit ASes present in the Internet Routing Table:    680
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              563115552
    Equivalent to 33 /8s, 144 /16s and 118 /24s
    Percentage of available APNIC address space announced:         76.3

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
                       55296-56319, 131072-132095
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  42/8,  43/8,  49/8,
                        58/8,  59/8,  60/8,  61/8, 101/8, 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, 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:                    137756
    Total ARIN prefixes after maximum aggregation:                71405
    ARIN Deaggregation factor:                                     1.93
Prefixes being announced from the ARIN address blocks:           109127
    Unique aggregates announced from the ARIN address blocks:     43688
ARIN Region origin ASes present in the Internet Routing Table:    14028
    ARIN Prefixes per ASN:                                         7.78
ARIN Region origin ASes announcing only one prefix:                5371
ARIN Region transit ASes present in the Internet Routing Table:    1493
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          23
Number of ARIN addresses announced to Internet:               740228864
    Equivalent to 44 /8s, 30 /16s and 255 /24s
    Percentage of available ARIN address space announced:          63.0

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,  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,  54/8,
                        55/8,  56/8,  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, 107/8,
                       108/8, 173/8, 174/8, 184/8, 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:                     77788
    Total RIPE prefixes after maximum aggregation:                44916
    RIPE Deaggregation factor:                                     1.73
Prefixes being announced from the RIPE address blocks:            71248
    Unique aggregates announced from the RIPE address blocks:     46676
RIPE Region origin ASes present in the Internet Routing Table:    14985
    RIPE Prefixes per ASN:                                         4.75
RIPE Region origin ASes announcing only one prefix:                7714
RIPE Region transit ASes present in the Internet Routing Table:    2305
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          30
Number of RIPE addresses announced to Internet:               444162560
    Equivalent to 26 /8s, 121 /16s and 98 /24s
    Percentage of available RIPE address space announced:          77.9

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, 196608-197631
RIPE Address Blocks      2/8,  25/8,  31/8,  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, 176/8, 178/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   31406
    Total LACNIC prefixes after maximum aggregation:               7357
    LACNIC Deaggregation factor:                                   4.27
Prefixes being announced from the LACNIC address blocks:          30044
    Unique aggregates announced from the LACNIC address blocks:   15310
LACNIC Region origin ASes present in the Internet Routing Table:   1390
    LACNIC Prefixes per ASN:                                      21.61
LACNIC Region origin ASes announcing only one prefix:               435
LACNIC Region transit ASes present in the Internet Routing Table:   245
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              76966400
    Equivalent to 4 /8s, 150 /16s and 106 /24s
    Percentage of available LACNIC address space announced:        57.3

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

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

Prefixes being announced by AfriNIC Region ASes:                   7605
    Total AfriNIC prefixes after maximum aggregation:              1885
    AfriNIC Deaggregation factor:                                  4.03
Prefixes being announced from the AfriNIC address blocks:          5887
    Unique aggregates announced from the AfriNIC address blocks:   1748
AfriNIC Region origin ASes present in the Internet Routing Table:   413
    AfriNIC Prefixes per ASN:                                     14.25
AfriNIC Region origin ASes announcing only one prefix:              128
AfriNIC Region transit ASes present in the Internet Routing Table:   91
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC addresses announced to Internet:             21490688
    Equivalent to 1 /8s, 71 /16s and 236 /24s
    Percentage of available AfriNIC address space announced:       64.0

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1865       9469         516   Korea Telecom (KIX)
 7545     1436        299          79   TPG Internet Pty Ltd
 4755     1384        383         158   TATA Communications formerly 
17488     1360        156         121   Hathway IP Over Cable Interne
17974     1297        306          95   PT TELEKOMUNIKASI INDONESIA
24560     1056        309         168   Bharti Airtel Ltd., Telemedia
 9583     1028         75         487   Sify Limited
 4808      979       1722         267   CNCGROUP IP network: China169
18101      905        116         138   Reliance Infocom Ltd Internet
 9829      826        694          27   BSNL National Internet Backbo

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     3752       3922         277   bellsouth.net, inc. 
 4323     2660       1106         397   Time Warner Telecom
 1785     1796        697         130   PaeTec Communications, Inc.
19262     1781       4864         282   Verizon Global Networks 
20115     1508       1530         645   Charter Communications 
 7018     1410       5660         902   AT&T WorldNet Services
 6478     1392        280         137   AT&T Worldnet Services 
 2386     1305        555         926   AT&T Data Communications Serv
11492     1256        233          72   Cable One 
22773     1243       2859          62   Cox Communications, Inc.

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
 3292      447       2027         389   TDC Tele Danmark
 8866      435        133          25   Bulgarian Telecommunication C
 8551      401        353          46   Bezeq International
34984      397         92         191   BILISIM TELEKOM
  702      396       1865         310   UUNET - Commercial IP service
 3301      380       1688         334   TeliaNet Sweden
 3320      378       7332         331   Deutsche Telekom AG
12479      375        576           5   Uni2 Autonomous System
30890      375         80         208   Evolva Telecom
31148      353         18          85   FreeNet ISP

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
 6503     1998        277         365   AVANTEL, S.A. 
 8151     1336       2610         376   UniNet S.A. de C.V. 
10620     1333        249         154   TVCABLE BOGOTA 
28573     1181        928          84   NET Servicos de Comunicao S.A
 7303      827        440         105   Telecom Argentina Stet-France
14420      571         48          76   CORPORACION NACIONAL DE TELEC
22047      563        310          15   VTR PUNTO NET S.A. 
 3816      487        212          95   Empresa Nacional de Telecomun
 7738      478        922          30   Telecomunicacoes da Bahia S.A
14117      452         32          29   Telefonica del Sur S.A. 

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
 8452     1065        445          10   TEDATA
24863      741        147          39   LINKdotNET AS number
36992      650        278         158   Etisalat MISR
 3741      264        907         226   The Internet Solution 
24835      204         78          10   RAYA Telecom - Egypt
 6713      203        199          12   Itissalat Al-MAGHRIB
29571      202         19          11   Ci Telecom Autonomous system 
 2018      197        277          64   Tertiary Education Network 
33776      195         12          14   Starcomms Nigeria Limited
16637      154        441          91   MTN Network Solutions

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     3752       3922         277   bellsouth.net, inc. 
 4323     2660       1106         397   Time Warner Telecom
 6503     1998        277         365   AVANTEL, S.A. 
 4766     1865       9469         516   Korea Telecom (KIX)
 1785     1796        697         130   PaeTec Communications, Inc.
19262     1781       4864         282   Verizon Global Networks 
20115     1508       1530         645   Charter Communications 
 7545     1436        299          79   TPG Internet Pty Ltd
 7018     1410       5660         902   AT&T WorldNet Services
 6478     1392        280         137   AT&T Worldnet Services 

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

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

  ASN   No of nets  Net Savings Description
 4323      2660        2263      Time Warner Telecom
 1785      1796        1666      PaeTec Communications, Inc.
 6503      1998        1633      AVANTEL, S.A. 
19262      1781        1499      Verizon Global Networks 
 7545      1436        1357      TPG Internet Pty Ltd
 4766      1865        1349      Korea Telecom (KIX)
 6478      1392        1255      AT&T Worldnet Services 
17488      1360        1239      Hathway IP Over Cable Interne
 4755      1384        1226      TATA Communications formerly 
17974      1297        1202      PT TELEKOMUNIKASI INDONESIA

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

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

Bad AS  Designation  Network              Transit AS  Description
16927   UNALLOCATED  12.0.252.0/23         7018       AT&T WorldNet Servic
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.14.170.0/24        4323       Time Warner Telecom
13746   UNALLOCATED  12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.25.107.0/24        4323       Time Warner Telecom
26973   UNALLOCATED  12.39.152.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.154.0/23        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.155.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.159.0/24        7018       AT&T WorldNet Servic
25639   UNALLOCATED  12.41.169.0/24        7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
31.0.0.0/16          12654     RIPE NCC RIS Project
31.1.0.0/21          12654     RIPE NCC RIS Project
31.1.24.0/24         12654     RIPE NCC RIS Project
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
46.148.128.0/20      44056     Trytech Ltd.
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 
64.21.192.0/20       11610     Internet Nebraska Corporation
64.21.212.0/22       11610     Internet Nebraska Corporation

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        /8:19       /9:10      /10:25      /11:69      /12:207     
/13:422     /14:747     /15:1352    /16:11407   /17:5583    /18:9345    
/19:18599   /20:23974   /21:24005   /22:31701   /23:30532   /24:176629  
/25:986     /26:1102    /27:586     /28:154     /29:12      /30:2       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2316          3752      bellsouth.net, inc. 
 6503     1749          1998      AVANTEL, S.A. 
 4323     1431          2660      Time Warner Telecom
 6478     1353          1392      AT&T Worldnet Services 
10620     1225          1333      TVCABLE BOGOTA 
11492     1213          1256      Cable One 
 1785     1075          1796      PaeTec Communications, Inc.
18566     1072          1091      Covad Communications 
 7011     1058          1159      Citizens Utilities 
 8452      966          1065      TEDATA

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

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

   1:100       2:13        4:13        8:313      12:2016     13:8      
  14:60       15:18       16:3        17:8        20:9        24:1418   
  27:441      31:1        32:61       33:9        34:2        38:716    
  40:101      41:2612     44:3        46:260      47:10       49:14     
  50:6        52:12       55:7        56:2        57:29       58:848    
  59:500      60:496      61:1136     62:1006     63:1959     64:3738   
  65:2329     66:4079     67:1829     68:1130     69:2889     70:752    
  71:374      72:1935     73:2        74:2316     75:292      76:326    
  77:853      78:669      79:430      80:1048     81:798      82:506    
  83:466      84:681      85:1014     86:483      87:698      88:331    
  89:1567     90:116      91:3177     92:449      93:997      94:1129   
  95:715      96:402      97:226      98:627      99:33      101:3      
 107:1       108:64      109:745     110:417     111:645     112:313    
 113:316     114:475     115:608     116:1131    117:662     118:571    
 119:1014    120:166     121:709     122:1604    123:979     124:1235   
 125:1271    128:228     129:152     130:168     131:553     132:246    
 133:20      134:207     135:46      136:211     137:141     138:283    
 139:109     140:471     141:196     142:347     143:354     144:501    
 145:55      146:426     147:179     148:671     149:326     150:146    
 151:231     152:290     153:174     154:3       155:364     156:166    
 157:339     158:114     159:367     160:313     161:198     162:275    
 163:166     164:430     165:349     166:468     167:428     168:700    
 169:155     170:719     171:63      172:2       173:1089    174:411    
 175:261     176:1       178:618     180:693     182:252     183:246    
 184:182     186:805     187:859     188:884     189:1565    190:4197   
 192:5768    193:4772    194:3443    195:2858    196:1209    198:3533   
 199:3642    200:5490    201:1641    202:8218    203:8289    204:4044   
 205:2336    206:2569    207:3022    208:3885    209:3458    210:2553   
 211:1299    212:1807    213:1718    214:696     215:66      216:4761   
 217:1595    218:544     219:400     220:1221    221:421     222:342    
 223:71     

End of report




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