[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Nov 14 12:14:43 CST 2008


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
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 15 Nov, 2008

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

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

BGP routing table entries examined:                              273747
    Prefixes after maximum aggregation:                          131698
    Deaggregation factor:                                          2.08
    Unique aggregates announced to Internet:                     132906
Total ASes present in the Internet Routing Table:                 29790
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           25923
Origin ASes announcing only one prefix:                           12618
Transit ASes present in the Internet Routing Table:                3867
Transit-only ASes present in the Internet Routing Table:             84
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      25
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               548
    Unregistered ASNs in the Routing Table:                         201
Number of 32-bit ASNs allocated by the RIRs:                         63
Prefixes from 32-bit ASNs in the Routing Table:                       8
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            210
Number of addresses announced to Internet:                   1954643712
    Equivalent to 116 /8s, 129 /16s and 127 /24s
    Percentage of available address space announced:               52.7
    Percentage of allocated address space announced:               63.0
    Percentage of available address space allocated:               83.7
    Percentage of address space in use by end-sites:               74.3
Total number of prefixes smaller than registry allocations:      134661

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

Prefixes being announced by APNIC Region ASes:                    62656
    Total APNIC prefixes after maximum aggregation:               23339
    APNIC Deaggregation factor:                                    2.68
Prefixes being announced from the APNIC address blocks:           59566
    Unique aggregates announced from the APNIC address blocks:    26910
APNIC Region origin ASes present in the Internet Routing Table:    3459
    APNIC Prefixes per ASN:                                       17.22
APNIC Region origin ASes announcing only one prefix:                932
APNIC Region transit ASes present in the Internet Routing Table:    534
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              381242016
    Equivalent to 22 /8s, 185 /16s and 74 /24s
    Percentage of available APNIC address space announced:         75.7

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks    58/8,  59/8,  60/8,  61/8, 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,
                       202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8,
                       221/8, 222/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    123986
    Total ARIN prefixes after maximum aggregation:                64911
    ARIN Deaggregation factor:                                     1.91
Prefixes being announced from the ARIN address blocks:            93363
    Unique aggregates announced from the ARIN address blocks:     34747
ARIN Region origin ASes present in the Internet Routing Table:    12583
    ARIN Prefixes per ASN:                                         7.42
ARIN Region origin ASes announcing only one prefix:                4862
ARIN Region transit ASes present in the Internet Routing Table:    1197
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               400498592
    Equivalent to 23 /8s, 223 /16s and 31 /24s
    Percentage of available ARIN address space announced:          82.3

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
ARIN Address Blocks     24/8,  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, 173/8, 174/8,
                       199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8,
                       216/8,

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     60086
    Total RIPE prefixes after maximum aggregation:                36115
    RIPE Deaggregation factor:                                     1.66
Prefixes being announced from the RIPE address blocks:            55709
    Unique aggregates announced from the RIPE address blocks:     37297
RIPE Region origin ASes present in the Internet Routing Table:    12184
    RIPE Prefixes per ASN:                                         4.57
RIPE Region origin ASes announcing only one prefix:                6406
RIPE Region transit ASes present in the Internet Routing Table:    1862
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               378515552
    Equivalent to 22 /8s, 143 /16s and 176 /24s
    Percentage of available RIPE address space announced:          86.8

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, 47104-49151
RIPE Address Blocks     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, 193/8,
                       194/8, 195/8, 212/8, 213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   22297
    Total LACNIC prefixes after maximum aggregation:               5569
    LACNIC Deaggregation factor:                                   4.00
Prefixes being announced from the LACNIC address blocks:          20335
    Unique aggregates announced from the LACNIC address blocks:   11386
LACNIC Region origin ASes present in the Internet Routing Table:   1030
    LACNIC Prefixes per ASN:                                      19.74
LACNIC Region origin ASes announcing only one prefix:               339
LACNIC Region transit ASes present in the Internet Routing Table:   170
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              58064256
    Equivalent to 3 /8s, 117 /16s and 253 /24s
    Percentage of available LACNIC address space announced:        57.7

LACNIC AS Blocks       26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks  186/8, 187/8, 189/8, 190/8, 200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   4195
    Total AfriNIC prefixes after maximum aggregation:              1334
    AfriNIC Deaggregation factor:                                  3.14
Prefixes being announced from the AfriNIC address blocks:          4466
    Unique aggregates announced from the AfriNIC address blocks:   2142
AfriNIC Region origin ASes present in the Internet Routing Table:   264
    AfriNIC Prefixes per ASN:                                     16.92
AfriNIC Region origin ASes announcing only one prefix:               79
AfriNIC Region transit ASes present in the Internet Routing Table:   52
Average AfriNIC Region AS path length visible:                      4.0
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC addresses announced to Internet:             12920064
    Equivalent to 0 /8s, 197 /16s and 37 /24s
    Percentage of available AfriNIC address space announced:       25.7

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks  41/8, 196/8, 197/8,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
17488     1409         99         106   Hathway IP Over Cable Interne
 4755     1193        485         155   TATA Communications formerly 
 9583     1125         87         479   Sify Limited
 4766      899       6409         363   Korea Telecom (KIX)
 4134      898      13872         366   CHINANET-BACKBONE
23577      817         35         702   Korea Telecom (ATM-MPLS)
18101      786        167          31   Reliance Infocom Ltd Internet
 4780      731        357          63   Digital United Inc.
 9498      689        295          50   BHARTI BT INTERNET LTD.
 4808      632       1172         143   CNCGROUP IP network: China169

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     4370       3434         344   bellsouth.net, inc. 
  209     3019       4032         625   Qwest 
 6298     2094        327         691   Cox Communicatons 
 1785     1696        717         155   PaeTec Communications, Inc.
 6478     1664        365         196   AT&T Worldnet Services 
20115     1662       1452         726   Charter Communications 
 2386     1591        701         901   AT&T Data Communications Serv
 4323     1589       1084         377   Time Warner Telecom
 7018     1406       5869         974   AT&T WorldNet Services
11492     1214        166          16   Cable One 

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      429       1766         380   TDC Tele Danmark
12479      366        578           6   Uni2 Autonomous System
30890      366         95         189   SC Kappa Invexim SRL
 3301      333       1429         303   TeliaNet Sweden
 8866      331        111          23   Bulgarian Telecommunication C
 3320      322       7062         271   Deutsche Telekom AG
 3215      316       2788          99   France Telecom Transpac
 5462      300        794          27   Telewest Broadband
 8452      293        188          11   TEDATA
25233      289         44          24   Awalnet

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     1400       2832         224   UniNet S.A. de C.V. 
11830      670        299           9   Instituto Costarricense de El
10620      557        126          54   TVCABLE BOGOTA 
22047      522        270          14   VTR PUNTO NET S.A. 
 7303      497        244          70   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      422         87          50   ENTEL CHILE S.A. 
11172      406        118          72   Servicios Alestra S.A de C.V 
28573      343        468          23   NET Servicos de Comunicao S.A
14117      331         23           9   Telefonica del Sur S.A. 

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
24863      560         72          45   LINKdotNET AS number
 3741      271        857         227   The Internet Solution 
20858      260         34           3   EgyNet
 2018      238        215         140   Tertiary Education Network 
29571      147         13           8   Ci Telecom Autonomous system 
 6713      144        135          11   Itissalat Al-MAGHRIB
33783      141         10          15   EEPAD TISP TELECOM & INTERNET
 5536      119          7          22   Internet Egypt Network
33776      116          6           3   Starcomms Nigeria Limited
 5713      114        555          63   Telkom SA Ltd 

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     4370       3434         344   bellsouth.net, inc. 
  209     3019       4032         625   Qwest 
 6298     2094        327         691   Cox Communicatons 
 1785     1696        717         155   PaeTec Communications, Inc.
 6478     1664        365         196   AT&T Worldnet Services 
20115     1662       1452         726   Charter Communications 
 2386     1591        701         901   AT&T Data Communications Serv
 4323     1589       1084         377   Time Warner Telecom
17488     1409         99         106   Hathway IP Over Cable Interne
 7018     1406       5869         974   AT&T WorldNet Services

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

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

  ASN   No of nets  Net Savings Description
  209      3019        2394      Qwest 
 1785      1696        1541      PaeTec Communications, Inc.
 6478      1664        1468      AT&T Worldnet Services 
 6298      2094        1403      Cox Communicatons 
17488      1409        1303      Hathway IP Over Cable Interne
 4323      1589        1212      Time Warner Telecom
11492      1214        1198      Cable One 
 8151      1400        1176      UniNet S.A. de C.V. 
18566      1059        1049      Covad Communications 
 4755      1193        1038      TATA Communications formerly 

Complete listing at http://thyme.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        7018       AT&T WorldNet Servic
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
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   12.39.159.0/24        7018       AT&T WorldNet Servic
32326   UNALLOCATED   12.40.49.0/24         3549       Global Crossing 
25639   UNALLOCATED   12.41.169.0/24        7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
24.52.128.0/19       22561     Digital Teleport, Inc 
24.75.116.0/22       10796     ServiceCo LLC - Road Runner 
24.75.160.0/19        7843     Adelphia Corp. 
24.142.40.0/21        7018     AT&T WorldNet Services
24.142.160.0/19       7018     AT&T WorldNet Services
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 
63.140.213.0/24      22555     Universal Talkware Corporatio

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       /9:9       /10:19      /11:53      /12:159     
/13:308     /14:547     /15:1077    /16:10156   /17:4457    /18:7687    
/19:16553   /20:19396   /21:19150   /22:24122   /23:24829   /24:142451  
/25:841     /26:1006    /27:798     /28:93      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2858          4370      bellsouth.net, inc. 
 6298     2068          2094      Cox Communicatons 
  209     1739          3019      Qwest 
 2386     1270          1591      AT&T Data Communications Serv
17488     1199          1409      Hathway IP Over Cable Interne
11492     1190          1214      Cable One 
 1785     1158          1696      PaeTec Communications, Inc.
 6478     1106          1664      AT&T Worldnet Services 
18566     1040          1059      Covad Communications 
 9583      992          1125      Sify Limited

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

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

   1:1         4:12        8:153      12:2181     13:2        15:21     
  16:3        17:5        20:35       24:1088     30:1        32:61     
  38:512      40:92       41:781      43:1        44:2        47:12     
  52:3        55:3        56:3        57:27       58:515      59:550    
  60:452      61:1032     62:1121     63:2012     64:3280     65:2433   
  66:3480     67:1326     68:818      69:2351     70:888      71:138    
  72:2067     73:2        74:1294     75:167      76:290      77:880    
  78:520      79:292      80:928      81:844      82:594      83:397    
  84:586      85:1040     86:505      87:705      88:347      89:1357   
  90:27       91:1670     92:300      93:980      94:395      95:38     
  96:88       97:132      98:387      99:15      113:40      114:127    
 115:150     116:1010    117:406     118:252     119:529     120:103    
 121:610     122:868     123:445     124:870     125:1229    128:353    
 129:217     130:137     131:408     132:72      133:9       134:186    
 135:31      136:223     137:106     138:144     139:85      140:413    
 141:111     142:392     143:321     144:302     145:51      146:372    
 147:140     148:601     149:210     150:130     151:210     152:148    
 153:137     154:10      155:275     156:174     157:301     158:168    
 159:301     160:272     161:140     162:249     163:135     164:517    
 165:508     166:363     167:341     168:631     169:154     170:452    
 171:40      172:10      173:138     174:17      187:18      188:1      
 189:318     190:2390    192:5825    193:4140    194:3288    195:2626   
 196:1021    198:3711    199:3309    200:5509    201:1471    202:7679   
 203:8044    204:3930    205:2180    206:2297    207:2773    208:3727   
 209:3445    210:2608    211:1093    212:1547    213:1633    214:68     
 215:25      216:4382    217:1249    218:351     219:426     220:1059   
 221:419     222:303    

End of report
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