Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 17 13:10:14 CDT 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 18 Oct, 2008

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

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

BGP routing table entries examined:                              271514
    Prefixes after maximum aggregation:                          130898
    Deaggregation factor:                                          2.07
    Unique aggregates announced to Internet:                     131783
Total ASes present in the Internet Routing Table:                 29518
    Prefixes per ASN:                                              9.20
Origin-only ASes present in the Internet Routing Table:           25695
Origin ASes announcing only one prefix:                           12506
Transit ASes present in the Internet Routing Table:                3823
Transit-only ASes present in the Internet Routing Table:             81
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                     104
    Max AS path prepend of ASN (43413)                              100
Prefixes from unregistered ASNs in the Routing Table:               562
    Unregistered ASNs in the Routing Table:                         201
Number of 32-bit ASNs allocated by the RIRs:                         61
Prefixes from 32-bit ASNs in the Routing Table:                       9
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            752
Number of addresses announced to Internet:                   1923950912
    Equivalent to 114 /8s, 173 /16s and 41 /24s
    Percentage of available address space announced:               51.9
    Percentage of allocated address space announced:               63.0
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               73.9
Total number of prefixes smaller than registry allocations:      133641

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

Prefixes being announced by APNIC Region ASes:                    62245
    Total APNIC prefixes after maximum aggregation:               23219
    APNIC Deaggregation factor:                                    2.68
Prefixes being announced from the APNIC address blocks:           59212
    Unique aggregates announced from the APNIC address blocks:    26686
APNIC Region origin ASes present in the Internet Routing Table:    3404
    APNIC Prefixes per ASN:                                       17.39
APNIC Region origin ASes announcing only one prefix:                906
APNIC Region transit ASes present in the Internet Routing Table:    537
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              379108256
    Equivalent to 22 /8s, 152 /16s and 187 /24s
    Percentage of available APNIC address space announced:         80.7

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, 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:                    123346
    Total ARIN prefixes after maximum aggregation:                64844
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            92672
    Unique aggregates announced from the ARIN address blocks:     35033
ARIN Region origin ASes present in the Internet Routing Table:    12538
    ARIN Prefixes per ASN:                                         7.39
ARIN Region origin ASes announcing only one prefix:                4859
ARIN Region transit ASes present in the Internet Routing Table:    1195
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               363895840
    Equivalent to 21 /8s, 176 /16s and 156 /24s
    Percentage of available ARIN address space announced:          74.8

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:                     59495
    Total RIPE prefixes after maximum aggregation:                35663
    RIPE Deaggregation factor:                                     1.67
Prefixes being announced from the RIPE address blocks:            54642
    Unique aggregates announced from the RIPE address blocks:     36307
RIPE Region origin ASes present in the Internet Routing Table:    12030
    RIPE Prefixes per ASN:                                         4.54
RIPE Region origin ASes announcing only one prefix:                6326
RIPE Region transit ASes present in the Internet Routing Table:    1824
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                         104
Number of RIPE addresses announced to Internet:               375674272
    Equivalent to 22 /8s, 100 /16s and 85 /24s
    Percentage of available RIPE address space announced:          86.1

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:                   21833
    Total LACNIC prefixes after maximum aggregation:               5417
    LACNIC Deaggregation factor:                                   4.03
Prefixes being announced from the LACNIC address blocks:          19891
    Unique aggregates announced from the LACNIC address blocks:   11115
LACNIC Region origin ASes present in the Internet Routing Table:   1014
    LACNIC Prefixes per ASN:                                      19.62
LACNIC Region origin ASes announcing only one prefix:               334
LACNIC Region transit ASes present in the Internet Routing Table:   171
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              57394944
    Equivalent to 3 /8s, 107 /16s and 199 /24s
    Percentage of available LACNIC address space announced:        57.0

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:                   4036
    Total AfriNIC prefixes after maximum aggregation:              1316
    AfriNIC Deaggregation factor:                                  3.07
Prefixes being announced from the AfriNIC address blocks:          4290
    Unique aggregates announced from the AfriNIC address blocks:   2100
AfriNIC Region origin ASes present in the Internet Routing Table:   260
    AfriNIC Prefixes per ASN:                                     16.50
AfriNIC Region origin ASes announcing only one prefix:               81
AfriNIC Region transit ASes present in the Internet Routing Table:   52
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             12856576
    Equivalent to 0 /8s, 196 /16s and 45 /24s
    Percentage of available AfriNIC address space announced:       38.3

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4755     1483        518         196   TATA Communications formerly 
17488     1388         96         103   Hathway IP Over Cable Interne
 9583     1104         86         474   Sify Limited
 4766      879       6407         360   Korea Telecom (KIX)
 4134      844      13647         345   CHINANET-BACKBONE
23577      811         34         693   Korea Telecom (ATM-MPLS)
18101      781        161          65   Reliance Infocom Ltd Internet
 4780      717        355          62   Digital United Inc.
 9498      688        295          53   BHARTI BT INTERNET LTD.
 4808      627       1164         142   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     4301       3416         339   bellsouth.net, inc. 
  209     3075       4033         623   Qwest 
 6298     2010        319         714   Cox Communicatons 
20115     1925       1426         718   Charter Communications 
 1785     1678        717         155   PaeTec Communications, Inc.
 2386     1589        699         896   AT&T Data Communications Serv
 4323     1550       1083         373   Time Warner Telecom
 7018     1413       5859         984   AT&T WorldNet Services
 6478     1318        273         198   AT&T Worldnet Services 
11492     1212        152          11   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      434       1777         385   TDC Tele Danmark
30890      348         94         188   SC Kappa Invexim SRL
 3215      327       2756         106   France Telecom Transpac
 3301      327       1428         298   TeliaNet Sweden
 3320      326       7063         275   Deutsche Telekom AG
 8866      326        111          23   Bulgarian Telecommunication C
 5462      301        794          27   Telewest Broadband
25233      295         45          27   Awalnet
 8452      294        188          11   TEDATA
 8551      287        270          37   Bezeq International

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     1411       2849         221   UniNet S.A. de C.V. 
11830      669        299           9   Instituto Costarricense de El
22047      564        270          14   VTR PUNTO NET S.A. 
10620      505        122          61   TVCABLE BOGOTA 
 7303      493        242          69   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      419         85          48   ENTEL CHILE S.A. 
11172      405        118          72   Servicios Alestra S.A de C.V 
28573      349        460          23   NET Servicos de Comunicao S.A
14117      343         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      544         72          40   LINKdotNET AS number
 3741      269        856         225   The Internet Solution 
 2018      233        215         139   Tertiary Education Network 
20858      213         34           3   EgyNet
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      137         10          13   EEPAD TISP TELECOM & INTERNET
 5536      124          8          20   Internet Egypt Network
33776      116          6           3   Starcomms Nigeria Limited
 5713      115        555          65   Telkom SA Ltd 
29571      112         13           9   Ci Telecom Autonomous system 

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     4301       3416         339   bellsouth.net, inc. 
  209     3075       4033         623   Qwest 
 6298     2010        319         714   Cox Communicatons 
20115     1925       1426         718   Charter Communications 
 1785     1678        717         155   PaeTec Communications, Inc.
 2386     1589        699         896   AT&T Data Communications Serv
 4323     1550       1083         373   Time Warner Telecom
 4755     1483        518         196   TATA Communications formerly 
 7018     1413       5859         984   AT&T WorldNet Services
 8151     1411       2849         221   UniNet S.A. de C.V. 

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

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

  ASN   No of nets  Net Savings Description
  209      3075        2452      Qwest 
 1785      1678        1523      PaeTec Communications, Inc.
 6298      2010        1296      Cox Communicatons 
 4755      1483        1287      TATA Communications formerly 
17488      1388        1285      Hathway IP Over Cable Interne
20115      1925        1207      Charter Communications 
11492      1212        1201      Cable One 
 8151      1411        1190      UniNet S.A. de C.V. 
 4323      1550        1177      Time Warner Telecom
 6478      1318        1120      AT&T Worldnet Services 

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
22492   UNALLOCATED   12.2.46.0/24          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 

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

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

Network            Origin AS  Description
24.75.116.0/22       10796     ServiceCo LLC - Road Runner 
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
63.143.71.0/24         701     UUNET Technologies, Inc. 
63.143.115.0/24        701     UUNET Technologies, Inc. 

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       /10:17      /11:46      /12:148     
/13:298     /14:536     /15:1066    /16:10125   /17:4399    /18:7590    
/19:16364   /20:19244   /21:18707   /22:23677   /23:24603   /24:141889  
/25:820     /26:999     /27:851     /28:90      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2847          4301      bellsouth.net, inc. 
 6298     1984          2010      Cox Communicatons 
  209     1796          3075      Qwest 
 2386     1268          1589      AT&T Data Communications Serv
11492     1188          1212      Cable One 
17488     1179          1388      Hathway IP Over Cable Interne
 1785     1139          1678      PaeTec Communications, Inc.
 6478     1104          1318      AT&T Worldnet Services 
18566     1040          1059      Covad Communications 
20115     1033          1925      Charter Communications 

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

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

   4:12        8:141      12:2186     13:2        15:22       16:3      
  17:5        18:13       20:38       24:1148     31:1        32:58     
  38:511      40:92       41:708      43:1        44:2        47:12     
  52:3        55:3        56:3        57:26       58:521      59:530    
  60:452      61:983      62:1092     63:2037     64:3240     65:2429   
  66:3519     67:1286     68:805      69:2346     70:861      71:276    
  72:2056     73:7        74:1254     75:213      76:279      77:924    
  78:810      79:279      80:906      81:864      82:587      83:402    
  84:592      85:1036     86:501      87:706      88:325      89:1380   
  90:23       91:1602     92:270      93:928      94:258      95:3      
  96:80       97:102      98:350      99:11      113:15      114:110    
 115:122     116:985     117:378     118:240     119:523     120:93     
 121:604     122:852     123:446     124:862     125:1195    128:353    
 129:207     130:135     131:417     132:72      133:9       134:185    
 135:31      136:223     137:98      138:144     139:81      140:433    
 141:106     142:401     143:291     144:326     145:51      146:375    
 147:153     148:530     149:207     150:128     151:208     152:149    
 153:135     154:10      155:278     156:173     157:301     158:170    
 159:305     160:275     161:139     162:255     163:133     164:520    
 165:511     166:363     167:338     168:644     169:145     170:448    
 171:33      172:10      173:54      187:16      188:1       189:292    
 190:2317    192:5750    193:4147    194:3260    195:2617    196:1002   
 198:3735    199:3299    200:5552    201:1424    202:7820    203:8040   
 204:3925    205:2164    206:2293    207:2764    208:3708    209:3440   
 210:2566    211:1102    212:1514    213:1614    214:169     215:50     
 216:4419    217:1244    218:349     219:439     220:1053    221:413    
 222:298    

End of report




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