Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 3 13:38:23 CDT 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.apnic.net.

If you have any comments please contact Philip Smith <pfs at cisco.com>.

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

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

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

BGP routing table entries examined:                              330158
    Prefixes after maximum aggregation:                          151682
    Deaggregation factor:                                          2.18
    Unique aggregates announced to Internet:                     162121
Total ASes present in the Internet Routing Table:                 34721
    Prefixes per ASN:                                              9.51
Origin-only ASes present in the Internet Routing Table:           30112
Origin ASes announcing only one prefix:                           14633
Transit ASes present in the Internet Routing Table:                4609
Transit-only ASes present in the Internet Routing Table:            102
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (41664)                               21
Prefixes from unregistered ASNs in the Routing Table:              1987
    Unregistered ASNs in the Routing Table:                         969
Number of 32-bit ASNs allocated by the RIRs:                        757
Prefixes from 32-bit ASNs in the Routing Table:                     991
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            191
Number of addresses announced to Internet:                   2279348416
    Equivalent to 135 /8s, 220 /16s and 24 /24s
    Percentage of available address space announced:               61.5
    Percentage of allocated address space announced:               65.7
    Percentage of available address space allocated:               93.7
    Percentage of address space in use by end-sites:               84.6
Total number of prefixes smaller than registry allocations:      156259

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

Prefixes being announced by APNIC Region ASes:                    80332
    Total APNIC prefixes after maximum aggregation:               27557
    APNIC Deaggregation factor:                                    2.92
Prefixes being announced from the APNIC address blocks:           77315
    Unique aggregates announced from the APNIC address blocks:    34057
APNIC Region origin ASes present in the Internet Routing Table:    4177
    APNIC Prefixes per ASN:                                       18.51
APNIC Region origin ASes announcing only one prefix:               1170
APNIC Region transit ASes present in the Internet Routing Table:    642
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              543003680
    Equivalent to 32 /8s, 93 /16s and 148 /24s
    Percentage of available APNIC address space announced:         77.1

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,  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:                    135713
    Total ARIN prefixes after maximum aggregation:                69909
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           108391
    Unique aggregates announced from the ARIN address blocks:     42744
ARIN Region origin ASes present in the Internet Routing Table:    13888
    ARIN Prefixes per ASN:                                         7.80
ARIN Region origin ASes announcing only one prefix:                5328
ARIN Region transit ASes present in the Internet Routing Table:    1377
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               733182368
    Equivalent to 43 /8s, 179 /16s and 121 /24s
    Percentage of available ARIN address space announced:          62.4

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,  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:                     75380
    Total RIPE prefixes after maximum aggregation:                43966
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            68844
    Unique aggregates announced from the RIPE address blocks:     45168
RIPE Region origin ASes present in the Internet Routing Table:    14750
    RIPE Prefixes per ASN:                                         4.67
RIPE Region origin ASes announcing only one prefix:                7592
RIPE Region transit ASes present in the Internet Routing Table:    2218
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               436878592
    Equivalent to 26 /8s, 10 /16s and 61 /24s
    Percentage of available RIPE address space announced:          76.6

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:                   30075
    Total LACNIC prefixes after maximum aggregation:               7082
    LACNIC Deaggregation factor:                                   4.25
Prefixes being announced from the LACNIC address blocks:          28605
    Unique aggregates announced from the LACNIC address blocks:   15336
LACNIC Region origin ASes present in the Internet Routing Table:   1342
    LACNIC Prefixes per ASN:                                      21.32
LACNIC Region origin ASes announcing only one prefix:               417
LACNIC Region transit ASes present in the Internet Routing Table:   235
Average LACNIC Region AS path length visible:                       3.9
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              77005696
    Equivalent to 4 /8s, 151 /16s and 3 /24s
    Percentage of available LACNIC address space announced:        57.4

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:                   7421
    Total AfriNIC prefixes after maximum aggregation:              1872
    AfriNIC Deaggregation factor:                                  3.96
Prefixes being announced from the AfriNIC address blocks:          5738
    Unique aggregates announced from the AfriNIC address blocks:   1658
AfriNIC Region origin ASes present in the Internet Routing Table:   397
    AfriNIC Prefixes per ASN:                                     14.45
AfriNIC Region origin ASes announcing only one prefix:              126
AfriNIC Region transit ASes present in the Internet Routing Table:   89
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             20221952
    Equivalent to 1 /8s, 52 /16s and 144 /24s
    Percentage of available AfriNIC address space announced:       60.3

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     1866       8412         500   Korea Telecom (KIX)
 4755     1483        303         164   TATA Communications formerly 
 7545     1367        233          82   TPG Internet Pty Ltd
17488     1346        153         128   Hathway IP Over Cable Interne
17974     1206        296          82   PT TELEKOMUNIKASI INDONESIA
24560     1020        303         179   Bharti Airtel Ltd., Telemedia
 9583     1017         76         490   Sify Limited
 4808      933       1713         260   CNCGROUP IP network: China169
18101      844         95         126   Reliance Infocom Ltd Internet
 9829      819        690          35   BSNL National Internet Backbo

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3826       3667         273   bellsouth.net, inc. 
 4323     2703       1107         392   Time Warner Telecom
19262     1812       4643         282   Verizon Global Networks 
 1785     1790        698         131   PaeTec Communications, Inc.
20115     1491       1528         651   Charter Communications 
 7018     1474       5734         951   AT&T WorldNet Services
 6478     1332        275         109   AT&T Worldnet Services 
 2386     1287        554         905   AT&T Data Communications Serv
11492     1189        226          89   Cable One 
22773     1181       2858          61   Cox Communications, Inc.

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3292      448       2018         389   TDC Tele Danmark
30890      444        100         212   Evolva Telecom
  702      411       1869         324   UUNET - Commercial IP service
 8551      403        353          47   Bezeq International
 8866      403        117          18   Bulgarian Telecommunication C
 3301      374       1416         329   TeliaNet Sweden
 3320      372       7328         322   Deutsche Telekom AG
34984      372         90         184   BILISIM TELEKOM
12479      352        576           5   Uni2 Autonomous System
31148      331         17          76   FreeNet ISP

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1525       3049         245   UniNet S.A. de C.V. 
10620     1204        247         148   TVCABLE BOGOTA 
28573     1123        863         111   NET Servicos de Comunicao S.A
 6503      874        188         272   AVANTEL, S.A. 
 7303      795        408         102   Telecom Argentina Stet-France
14420      565         36          76   CORPORACION NACIONAL DE TELEC
22047      555        310          15   VTR PUNTO NET S.A. 
 3816      477        210          94   Empresa Nacional de Telecomun
 7738      477        922          30   Telecomunicacoes da Bahia S.A
11172      444         99          76   Servicios Alestra S.A de C.V 

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8452     1149        445          10   TEDATA
24863      725        147          39   LINKdotNET AS number
36992      662        279         177   Etisalat MISR
 3741      266        906         224   The Internet Solution 
33776      209         12          12   Starcomms Nigeria Limited
 6713      203        199          12   Itissalat Al-MAGHRIB
 2018      197        277          64   Tertiary Education Network 
29571      193         19          11   Ci Telecom Autonomous system 
24835      190         78           9   RAYA Telecom - Egypt
16637      150        440          98   MTN Network Solutions

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3826       3667         273   bellsouth.net, inc. 
 4323     2703       1107         392   Time Warner Telecom
 4766     1866       8412         500   Korea Telecom (KIX)
19262     1812       4643         282   Verizon Global Networks 
 1785     1790        698         131   PaeTec Communications, Inc.
 8151     1525       3049         245   UniNet S.A. de C.V. 
20115     1491       1528         651   Charter Communications 
 4755     1483        303         164   TATA Communications formerly 
 7018     1474       5734         951   AT&T WorldNet Services
 7545     1367        233          82   TPG Internet Pty Ltd

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

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

  ASN   No of nets  Net Savings Description
 4323      2703        2311      Time Warner Telecom
 1785      1790        1659      PaeTec Communications, Inc.
19262      1812        1530      Verizon Global Networks 
 4766      1866        1366      Korea Telecom (KIX)
 4755      1483        1319      TATA Communications formerly 
 7545      1367        1285      TPG Internet Pty Ltd
 8151      1525        1280      UniNet S.A. de C.V. 
 6478      1332        1223      AT&T Worldnet Services 
17488      1346        1218      Hathway IP Over Cable Interne
 8452      1149        1139      TEDATA

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

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

Bad AS  Designation  Network              Transit AS  Description
11946   UNALLOCATED  8.12.155.0/24        40913       Quality Technology S
33084   UNALLOCATED  8.15.195.0/24         3356       Level 3 Communicatio
16734   UNALLOCATED  8.18.204.0/24        26914       Global Netoptex, Inc
22015   UNALLOCATED  8.22.137.0/24        14989       Broadview Networks 
46856   UNALLOCATED  8.22.184.0/22         3356       Level 3 Communicatio
26169   UNALLOCATED  8.225.177.0/24       20225       TelJet 
32249   UNALLOCATED  8.225.178.0/24        3356       Level 3 Communicatio
16927   UNALLOCATED  12.0.252.0/23         7018       AT&T WorldNet Servic
46883   UNALLOCATED  12.4.222.0/24         7018       AT&T WorldNet Servic
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic

Complete listing at http://thyme.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<<
41.223.189.0/24       6453     Teleglobe Inc. 
41.223.196.0/24      36990     Alkan Telecom Ltd
41.223.197.0/24      36990     Alkan Telecom Ltd
41.223.198.0/24      36990     Alkan Telecom Ltd
41.223.199.0/24      36990     Alkan Telecom Ltd

Complete listing at http://thyme.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        /8:20       /9:10      /10:25      /11:67      /12:198     
/13:414     /14:724     /15:1315    /16:11259   /17:5420    /18:9283    
/19:18666   /20:23423   /21:23540   /22:30709   /23:29993   /24:171963  
/25:1061    /26:1173    /27:719     /28:116     /29:47      /30:6       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2445          3826      bellsouth.net, inc. 
 4766     1488          1866      Korea Telecom (KIX)
 4323     1366          2703      Time Warner Telecom
 1785     1253          1790      PaeTec Communications, Inc.
11492     1093          1189      Cable One 
10620     1092          1204      TVCABLE BOGOTA 
17488     1088          1346      Hathway IP Over Cable Interne
18566     1068          1087      Covad Communications 
 8452     1040          1149      TEDATA
24560      921          1020      Bharti Airtel Ltd., Telemedia

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

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

   1:60        2:8         4:13        8:303      12:2017     13:8      
  14:1        15:21       16:3        17:9        20:7        24:1438   
  27:298      31:1        32:61       33:22       38:692      40:97     
  41:2519     44:3        46:55       47:16       52:12       55:5      
  56:2        57:28       58:805      59:504      60:470      61:1078   
  62:1038     63:1971     64:3734     65:2307     66:3975     67:1870   
  68:1135     69:2778     70:743      71:372      72:1940     73:2      
  74:2306     75:275      76:331      77:915      78:635      79:435    
  80:1016     81:774      82:501      83:438      84:687      85:1040   
  86:486      87:692      88:318      89:1536     90:96       91:2996   
  92:426      93:982      94:1166     95:683      96:507      97:218    
  98:622      99:34      108:64      109:669     110:481     111:570    
 112:283     113:316     114:450     115:579     116:1101    117:657    
 118:507     119:884     120:141     121:707     122:1537    123:961    
 124:1204    125:1244    128:226     129:158     130:170     131:538    
 132:246     133:17      134:196     135:46      136:221     137:137    
 138:272     139:105     140:478     141:196     142:343     143:351    
 144:472     145:53      146:427     147:169     148:677     149:307    
 150:153     151:233     152:298     153:169     154:3       155:360    
 156:167     157:332     158:110     159:358     160:313     161:183    
 162:269     163:167     164:415     165:368     166:468     167:423    
 168:667     169:157     170:725     171:61      172:2       173:1034   
 174:476     175:161     176:1       177:1       178:442     180:604    
 181:1       182:207     183:232     184:153     186:582     187:514    
 188:799     189:800     190:4020    192:5764    193:4748    194:3429   
 195:2793    196:1190    198:3575    199:3560    200:5451    201:1590   
 202:8053    203:8275    204:4011    205:2387    206:2530    207:3068   
 208:3869    209:3467    210:2547    211:1295    212:1743    213:1667   
 214:655     215:67      216:4791    217:1581    218:471     219:394    
 220:1141    221:387     222:313     223:27     

End of report




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