Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 20 13:26:13 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 21 Aug, 2010

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

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

BGP routing table entries examined:                              328585
    Prefixes after maximum aggregation:                          151394
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     161190
Total ASes present in the Internet Routing Table:                 34625
    Prefixes per ASN:                                              9.49
Origin-only ASes present in the Internet Routing Table:           30038
Origin ASes announcing only one prefix:                           14583
Transit ASes present in the Internet Routing Table:                4587
Transit-only ASes present in the Internet Routing Table:            105
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:              1213
    Unregistered ASNs in the Routing Table:                         618
Number of 32-bit ASNs allocated by the RIRs:                        740
Prefixes from 32-bit ASNs in the Routing Table:                     925
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            170
Number of addresses announced to Internet:                   2258724928
    Equivalent to 134 /8s, 161 /16s and 104 /24s
    Percentage of available address space announced:               60.9
    Percentage of allocated address space announced:               65.1
    Percentage of available address space allocated:               93.7
    Percentage of address space in use by end-sites:               84.4
Total number of prefixes smaller than registry allocations:      155755

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

Prefixes being announced by APNIC Region ASes:                    80054
    Total APNIC prefixes after maximum aggregation:               27467
    APNIC Deaggregation factor:                                    2.91
Prefixes being announced from the APNIC address blocks:           76989
    Unique aggregates announced from the APNIC address blocks:    33885
APNIC Region origin ASes present in the Internet Routing Table:    4163
    APNIC Prefixes per ASN:                                       18.49
APNIC Region origin ASes announcing only one prefix:               1166
APNIC Region transit ASes present in the Internet Routing Table:    641
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         21
Number of APNIC addresses announced to Internet:              541568800
    Equivalent to 32 /8s, 71 /16s and 175 /24s
    Percentage of available APNIC address space announced:         76.9

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:                    135154
    Total ARIN prefixes after maximum aggregation:                69850
    ARIN Deaggregation factor:                                     1.93
Prefixes being announced from the ARIN address blocks:           107936
    Unique aggregates announced from the ARIN address blocks:     42495
ARIN Region origin ASes present in the Internet Routing Table:    13862
    ARIN Prefixes per ASN:                                         7.79
ARIN Region origin ASes announcing only one prefix:                5313
ARIN Region transit ASes present in the Internet Routing Table:    1369
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               731597472
    Equivalent to 43 /8s, 155 /16s and 74 /24s
    Percentage of available ARIN address space announced:          62.3

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,  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:                     75066
    Total RIPE prefixes after maximum aggregation:                43881
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            68498
    Unique aggregates announced from the RIPE address blocks:     45003
RIPE Region origin ASes present in the Internet Routing Table:    14701
    RIPE Prefixes per ASN:                                         4.66
RIPE Region origin ASes announcing only one prefix:                7570
RIPE Region transit ASes present in the Internet Routing Table:    2202
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               436120704
    Equivalent to 25 /8s, 254 /16s and 172 /24s
    Percentage of available RIPE address space announced:          76.5

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, 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:                   29723
    Total LACNIC prefixes after maximum aggregation:               7064
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:          28237
    Unique aggregates announced from the LACNIC address blocks:   15039
LACNIC Region origin ASes present in the Internet Routing Table:   1332
    LACNIC Prefixes per ASN:                                      21.20
LACNIC Region origin ASes announcing only one prefix:               410
LACNIC Region transit ASes present in the Internet Routing Table:   239
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        20
Number of LACNIC addresses announced to Internet:              76854656
    Equivalent to 4 /8s, 148 /16s and 181 /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:                   7417
    Total AfriNIC prefixes after maximum aggregation:              1893
    AfriNIC Deaggregation factor:                                  3.92
Prefixes being announced from the AfriNIC address blocks:          5736
    Unique aggregates announced from the AfriNIC address blocks:   1684
AfriNIC Region origin ASes present in the Internet Routing Table:   395
    AfriNIC Prefixes per ASN:                                     14.52
AfriNIC Region origin ASes announcing only one prefix:              124
AfriNIC Region transit ASes present in the Internet Routing Table:   88
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             20171264
    Equivalent to 1 /8s, 51 /16s and 202 /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     1864       8412         498   Korea Telecom (KIX)
 4755     1477        298         162   TATA Communications formerly 
 7545     1380        234          86   TPG Internet Pty Ltd
17488     1341        151         131   Hathway IP Over Cable Interne
17974     1217        293          76   PT TELEKOMUNIKASI INDONESIA
 9583     1010         75         494   Sify Limited
24560      996        303         179   Bharti Airtel Ltd., Telemedia
 4808      898       1671         245   CNCGROUP IP network: China169
 9829      819        689          35   BSNL National Internet Backbo
 4134      796      22476         419   CHINANET-BACKBONE

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     3850       3684         276   bellsouth.net, inc. 
 4323     2710       1116         395   Time Warner Telecom
19262     1800       4623         274   Verizon Global Networks 
 1785     1790        698         131   PaeTec Communications, Inc.
20115     1490       1527         653   Charter Communications 
 7018     1482       5736         956   AT&T WorldNet Services
 6478     1301        272         125   AT&T Worldnet Services 
 2386     1287        554         909   AT&T Data Communications Serv
11492     1243        214         117   Cable One 
22773     1177       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      449       2026         390   TDC Tele Danmark
30890      443         99         211   Evolva Telecom
  702      413       1870         326   UUNET - Commercial IP service
 8866      403        117          18   Bulgarian Telecommunication C
 8551      401        353          46   Bezeq International
 3320      377       7329         326   Deutsche Telekom AG
 3301      374       1416         329   TeliaNet Sweden
34984      367         89         182   BILISIM TELEKOM
12479      353        576           5   Uni2 Autonomous System
 3215      321       3202          93   France Telecom Transpac

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     1528       3049         247   UniNet S.A. de C.V. 
10620     1093        244         150   TVCABLE BOGOTA 
28573     1071        834         110   NET Servicos de Comunicao S.A
 6503      811        187         263   AVANTEL, S.A. 
 7303      791        408         101   Telecom Argentina Stet-France
14420      552         35          78   CORPORACION NACIONAL DE TELEC
22047      549        310          15   VTR PUNTO NET S.A. 
 7738      477        922          30   Telecomunicacoes da Bahia S.A
 3816      476        209          99   Empresa Nacional de Telecomun
11172      447         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     1163        445          10   TEDATA
24863      728        147          39   LINKdotNET AS number
36992      657        279         183   Etisalat MISR
 3741      270        898         232   The Internet Solution 
33776      209         12          12   Starcomms Nigeria Limited
 2018      197        277          64   Tertiary Education Network 
 6713      195        186          16   Itissalat Al-MAGHRIB
24835      193         78           9   RAYA Telecom - Egypt
29571      193         19          11   Ci Telecom Autonomous system 
16637      149        440          95   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     3850       3684         276   bellsouth.net, inc. 
 4323     2710       1116         395   Time Warner Telecom
 4766     1864       8412         498   Korea Telecom (KIX)
19262     1800       4623         274   Verizon Global Networks 
 1785     1790        698         131   PaeTec Communications, Inc.
 8151     1528       3049         247   UniNet S.A. de C.V. 
20115     1490       1527         653   Charter Communications 
 7018     1482       5736         956   AT&T WorldNet Services
 4755     1477        298         162   TATA Communications formerly 
 7545     1380        234          86   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      2710        2315      Time Warner Telecom
 1785      1790        1659      PaeTec Communications, Inc.
19262      1800        1526      Verizon Global Networks 
 4766      1864        1366      Korea Telecom (KIX)
 4755      1477        1315      TATA Communications formerly 
 7545      1380        1294      TPG Internet Pty Ltd
 8151      1528        1281      UniNet S.A. de C.V. 
17488      1341        1210      Hathway IP Over Cable Interne
 6478      1301        1176      AT&T Worldnet Services 
 8452      1163        1153      TEDATA

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

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

Bad AS  Designation  Network              Transit AS  Description
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         3561       Savvis
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
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.14.170.0/24        7018       AT&T WorldNet Servic
23054   UNALLOCATED  12.18.240.0/24        7018       AT&T WorldNet Servic
33198   UNALLOCATED  12.19.149.0/24        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        /8:19       /9:10      /10:25      /11:67      /12:198     
/13:413     /14:722     /15:1311    /16:11218   /17:5411    /18:9272    
/19:18562   /20:23351   /21:23365   /22:30395   /23:29879   /24:171207  
/25:1056    /26:1192    /27:734     /28:118     /29:47      /30:6       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2463          3850      bellsouth.net, inc. 
 4766     1487          1864      Korea Telecom (KIX)
 4323     1373          2710      Time Warner Telecom
 1785     1253          1790      PaeTec Communications, Inc.
11492     1086          1243      Cable One 
17488     1084          1341      Hathway IP Over Cable Interne
18566     1068          1087      Covad Communications 
 8452     1052          1163      TEDATA
10620     1006          1093      TVCABLE BOGOTA 
24560      895           996      Bharti Airtel Ltd., Telemedia

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

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

   1:55        2:2         4:13        8:299      12:2009     13:7      
  14:1        15:21       16:3        17:9        20:6        24:1430   
  27:297      31:1        32:61       33:22       38:698      40:97     
  41:2518     44:3        46:26       47:16       52:12       55:7      
  56:2        57:29       58:800      59:506      60:460      61:1075   
  62:1063     63:1968     64:3733     65:2309     66:4010     67:1823   
  68:1105     69:2771     70:745      71:357      72:1941     73:2      
  74:2318     75:263      76:327      77:889      78:618      79:438    
  80:1017     81:798      82:504      83:490      84:691      85:1047   
  86:473      87:692      88:307      89:1519     90:99       91:2974   
  92:417      93:1005     94:1176     95:679      96:521      97:216    
  98:612      99:34      108:64      109:635     110:449     111:542    
 112:277     113:312     114:447     115:574     116:1095    117:658    
 118:491     119:888     120:140     121:716     122:1532    123:945    
 124:1125    125:1246    128:227     129:164     130:201     131:539    
 132:247     133:16      134:195     135:45      136:237     137:135    
 138:270     139:105     140:474     141:197     142:342     143:374    
 144:472     145:52      146:413     147:172     148:677     149:303    
 150:153     151:228     152:299     153:169     154:3       155:361    
 156:166     157:328     158:118     159:361     160:316     161:183    
 162:255     163:168     164:414     165:367     166:457     167:413    
 168:652     169:159     170:718     171:60      172:2       173:981    
 174:511     175:154     176:1       177:1       178:406     180:586    
 181:1       182:169     183:238     184:210     186:565     187:423    
 188:796     189:759     190:3959    192:5761    193:4741    194:3418   
 195:2780    196:1186    198:3570    199:3575    200:5399    201:1586   
 202:8034    203:8262    204:4015    205:2393    206:2486    207:3063   
 208:3889    209:3466    210:2562    211:1315    212:1765    213:1682   
 214:658     215:67      216:4693    217:1556    218:502     219:379    
 220:1142    221:404     222:316     223:3      

End of report




More information about the NANOG mailing list