Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 10 13:43:01 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 11 Sep, 2010

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

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

BGP routing table entries examined:                              331078
    Prefixes after maximum aggregation:                          151868
    Deaggregation factor:                                          2.18
    Unique aggregates announced to Internet:                     162291
Total ASes present in the Internet Routing Table:                 34754
    Prefixes per ASN:                                              9.53
Origin-only ASes present in the Internet Routing Table:           30146
Origin ASes announcing only one prefix:                           14627
Transit ASes present in the Internet Routing Table:                4608
Transit-only ASes present in the Internet Routing Table:            104
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      35
    Max AS path prepend of ASN (45127)                               27
Prefixes from unregistered ASNs in the Routing Table:              2342
    Unregistered ASNs in the Routing Table:                        1103
Number of 32-bit ASNs allocated by the RIRs:                        763
Prefixes from 32-bit ASNs in the Routing Table:                    1006
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            187
Number of addresses announced to Internet:                   2264627392
    Equivalent to 134 /8s, 251 /16s and 120 /24s
    Percentage of available address space announced:               61.1
    Percentage of allocated address space announced:               65.2
    Percentage of available address space allocated:               93.7
    Percentage of address space in use by end-sites:               84.7
Total number of prefixes smaller than registry allocations:      156686

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

Prefixes being announced by APNIC Region ASes:                    80589
    Total APNIC prefixes after maximum aggregation:               27550
    APNIC Deaggregation factor:                                    2.93
Prefixes being announced from the APNIC address blocks:           77583
    Unique aggregates announced from the APNIC address blocks:    34032
APNIC Region origin ASes present in the Internet Routing Table:    4179
    APNIC Prefixes per ASN:                                       18.56
APNIC Region origin ASes announcing only one prefix:               1166
APNIC Region transit ASes present in the Internet Routing Table:    645
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         35
Number of APNIC addresses announced to Internet:              543897888
    Equivalent to 32 /8s, 107 /16s and 57 /24s
    Percentage of available APNIC address space announced:         77.2

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:                    135897
    Total ARIN prefixes after maximum aggregation:                69980
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           108534
    Unique aggregates announced from the ARIN address blocks:     42821
ARIN Region origin ASes present in the Internet Routing Table:    13893
    ARIN Prefixes per ASN:                                         7.81
ARIN Region origin ASes announcing only one prefix:                5328
ARIN Region transit ASes present in the Internet Routing Table:    1375
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               733340320
    Equivalent to 43 /8s, 181 /16s and 226 /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:                     75671
    Total RIPE prefixes after maximum aggregation:                44053
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            69110
    Unique aggregates announced from the RIPE address blocks:     45303
RIPE Region origin ASes present in the Internet Routing Table:    14768
    RIPE Prefixes per ASN:                                         4.68
RIPE Region origin ASes announcing only one prefix:                7593
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:               438226944
    Equivalent to 26 /8s, 30 /16s and 208 /24s
    Percentage of available RIPE address space announced:          76.8

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:                   30221
    Total LACNIC prefixes after maximum aggregation:               7101
    LACNIC Deaggregation factor:                                   4.26
Prefixes being announced from the LACNIC address blocks:          28778
    Unique aggregates announced from the LACNIC address blocks:   15291
LACNIC Region origin ASes present in the Internet Routing Table:   1345
    LACNIC Prefixes per ASN:                                      21.40
LACNIC Region origin ASes announcing only one prefix:               419
LACNIC Region transit ASes present in the Internet Routing Table:   233
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC addresses announced to Internet:              76470144
    Equivalent to 4 /8s, 142 /16s and 215 /24s
    Percentage of available LACNIC address space announced:        57.0

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:                   7448
    Total AfriNIC prefixes after maximum aggregation:              1868
    AfriNIC Deaggregation factor:                                  3.99
Prefixes being announced from the AfriNIC address blocks:          5723
    Unique aggregates announced from the AfriNIC address blocks:   1653
AfriNIC Region origin ASes present in the Internet Routing Table:   399
    AfriNIC Prefixes per ASN:                                     14.34
AfriNIC Region origin ASes announcing only one prefix:              121
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:             20156416
    Equivalent to 1 /8s, 51 /16s and 144 /24s
    Percentage of available AfriNIC address space announced:       60.1

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     1868       8412         500   Korea Telecom (KIX)
 4755     1459        367         163   TATA Communications formerly 
 7545     1364        234          83   TPG Internet Pty Ltd
17488     1346        153         123   Hathway IP Over Cable Interne
17974     1212        296          66   PT TELEKOMUNIKASI INDONESIA
24560     1027        303         177   Bharti Airtel Ltd., Telemedia
 9583     1017         76         490   Sify Limited
 4808      932       1713         260   CNCGROUP IP network: China169
18101      847         97         127   Reliance Infocom Ltd Internet
 9829      818        691          36   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     3807       3667         273   bellsouth.net, inc. 
 4323     2709       1107         393   Time Warner Telecom
19262     1814       4644         284   Verizon Global Networks 
 1785     1791        698         131   PaeTec Communications, Inc.
20115     1492       1529         652   Charter Communications 
 7018     1473       5734         949   AT&T WorldNet Services
 6478     1329        273         150   AT&T Worldnet Services 
 2386     1288        554         906   AT&T Data Communications Serv
11492     1193        227          90   Cable One 
22773     1185       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
 8551      544        353          46   Bezeq International
 3292      448       2026         389   TDC Tele Danmark
30890      444        100         212   Evolva Telecom
  702      411       1869         324   UUNET - Commercial IP service
 8866      404        117          19   Bulgarian Telecommunication C
 3301      376       1672         331   TeliaNet Sweden
34984      372         90         184   BILISIM TELEKOM
 3320      367       7327         321   Deutsche Telekom AG
12479      357        576           5   Uni2 Autonomous System
31148      336         18          77   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     1505       2908         283   UniNet S.A. de C.V. 
10620     1319        247         148   TVCABLE BOGOTA 
28573     1120        862         111   NET Servicos de Comunicao S.A
 6503      884        194         280   AVANTEL, S.A. 
 7303      796        408         101   Telecom Argentina Stet-France
14420      569         36          76   CORPORACION NACIONAL DE TELEC
22047      561        310          15   VTR PUNTO NET S.A. 
 3816      480        209          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     1153        445          10   TEDATA
24863      728        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
29571      198         19          11   Ci Telecom Autonomous system 
 2018      197        277          64   Tertiary Education Network 
24835      190         78           9   RAYA Telecom - Egypt
16637      154        440          97   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     3807       3667         273   bellsouth.net, inc. 
 4323     2709       1107         393   Time Warner Telecom
 4766     1868       8412         500   Korea Telecom (KIX)
19262     1814       4644         284   Verizon Global Networks 
 1785     1791        698         131   PaeTec Communications, Inc.
 8151     1505       2908         283   UniNet S.A. de C.V. 
20115     1492       1529         652   Charter Communications 
 7018     1473       5734         949   AT&T WorldNet Services
 4755     1459        367         163   TATA Communications formerly 
 7545     1364        234          83   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      2709        2316      Time Warner Telecom
 1785      1791        1660      PaeTec Communications, Inc.
19262      1814        1530      Verizon Global Networks 
 4766      1868        1368      Korea Telecom (KIX)
 4755      1459        1296      TATA Communications formerly 
 7545      1364        1281      TPG Internet Pty Ltd
17488      1346        1223      Hathway IP Over Cable Interne
 8151      1505        1222      UniNet S.A. de C.V. 
 6478      1329        1179      AT&T Worldnet Services 
10620      1319        1171      TVCABLE BOGOTA 

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
53562   UNALLOCATED  8.19.94.0/24          3356       Level 3 Communicatio
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

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<<
41.223.196.0/24      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
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 

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        /8:19       /9:10      /10:25      /11:67      /12:199     
/13:414     /14:729     /15:1317    /16:11282   /17:5436    /18:9300    
/19:18612   /20:23478   /21:23608   /22:30739   /23:30142   /24:172526  
/25:1068    /26:1181    /27:703     /28:163     /29:47      /30:6       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2427          3807      bellsouth.net, inc. 
 4766     1490          1868      Korea Telecom (KIX)
 4323     1370          2709      Time Warner Telecom
 1785     1254          1791      PaeTec Communications, Inc.
10620     1207          1319      TVCABLE BOGOTA 
11492     1095          1193      Cable One 
17488     1087          1346      Hathway IP Over Cable Interne
18566     1068          1087      Covad Communications 
 8452     1044          1153      TEDATA
24560      928          1027      Bharti Airtel Ltd., Telemedia

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

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

   1:66        2:10        4:13        8:305      12:2014     13:8      
  14:2        15:21       16:3        17:9        20:7        24:1445   
  27:335      31:1        32:60       33:22       38:694      40:97     
  41:2529     44:3        46:62       47:16       49:1        52:12     
  55:6        56:2        57:29       58:825      59:498      60:474    
  61:1082     62:1108     63:1968     64:3734     65:2306     66:3987   
  67:1865     68:1131     69:2794     70:724      71:371      72:1932   
  73:2        74:2327     75:279      76:331      77:906      78:650    
  79:434      80:993      81:812      82:490      83:442      84:679    
  85:1040     86:448      87:686      88:323      89:1550     90:96     
  91:3004     92:424      93:989      94:1170     95:692      96:510    
  97:218      98:622      99:34      101:1       108:64      109:665    
 110:499     111:573     112:298     113:298     114:451     115:584    
 116:1096    117:657     118:508     119:874     120:141     121:709    
 122:1543    123:928     124:1214    125:1240    128:226     129:157    
 130:169     131:539     132:258     133:17      134:196     135:46     
 136:222     137:137     138:272     139:107     140:478     141:197    
 142:343     143:351     144:474     145:54      146:420     147:169    
 148:665     149:303     150:152     151:233     152:287     153:170    
 154:3       155:362     156:167     157:332     158:112     159:358    
 160:313     161:183     162:271     163:167     164:417     165:368    
 166:468     167:422     168:649     169:156     170:727     171:61     
 172:2       173:1045    174:487     175:167     176:1       177:1      
 178:462     180:641     181:1       182:208     183:236     184:155    
 186:606     187:522     188:806     189:806     190:4109    192:5771   
 193:4734    194:3436    195:2797    196:1226    198:3579    199:3570   
 200:5439    201:1598    202:8091    203:8265    204:4020    205:2393   
 206:2529    207:3068    208:3880    209:3466    210:2554    211:1291   
 212:1782    213:1683    214:660     215:67      216:4784    217:1592   
 218:473     219:398     220:1143    221:386     222:313     223:40     


End of report




More information about the NANOG mailing list