Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 5 18:13:19 UTC 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 06 Sep, 2008

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

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

BGP routing table entries examined:                              267551
    Prefixes after maximum aggregation:                          129558
    Deaggregation factor:                                          2.07
    Unique aggregates announced to Internet:                     130250
Total ASes present in the Internet Routing Table:                 29147
    Prefixes per ASN:                                              9.18
Origin-only ASes present in the Internet Routing Table:           25360
Origin ASes announcing only one prefix:                           12310
Transit ASes present in the Internet Routing Table:                3787
Transit-only ASes present in the Internet Routing Table:             83
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      26
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               568
    Unregistered ASNs in the Routing Table:                         211
Number of 32-bit ASNs allocated by the RIRs:                         59
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:            761
Number of addresses announced to Internet:                   1897392032
    Equivalent to 113 /8s, 23 /16s and 231 /24s
    Percentage of available address space announced:               51.2
    Percentage of allocated address space announced:               62.2
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               73.4
Total number of prefixes smaller than registry allocations:      131274

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

Prefixes being announced by APNIC Region ASes:                    61606
    Total APNIC prefixes after maximum aggregation:               22776
    APNIC Deaggregation factor:                                    2.70
Prefixes being announced from the APNIC address blocks:           58521
    Unique aggregates announced from the APNIC address blocks:    26310
APNIC Region origin ASes present in the Internet Routing Table:    3366
    APNIC Prefixes per ASN:                                       17.39
APNIC Region origin ASes announcing only one prefix:                900
APNIC Region transit ASes present in the Internet Routing Table:    526
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              375010592
    Equivalent to 22 /8s, 90 /16s and 53 /24s
    Percentage of available APNIC address space announced:         79.8

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:                    122144
    Total ARIN prefixes after maximum aggregation:                64686
    ARIN Deaggregation factor:                                     1.89
Prefixes being announced from the ARIN address blocks:            91338
    Unique aggregates announced from the ARIN address blocks:     35015
ARIN Region origin ASes present in the Internet Routing Table:    12424
    ARIN Prefixes per ASN:                                         7.35
ARIN Region origin ASes announcing only one prefix:                4790
ARIN Region transit ASes present in the Internet Routing Table:    1186
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               360988896
    Equivalent to 21 /8s, 132 /16s and 64 /24s
    Percentage of available ARIN address space announced:          74.2

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:                     57792
    Total RIPE prefixes after maximum aggregation:                35026
    RIPE Deaggregation factor:                                     1.65
Prefixes being announced from the RIPE address blocks:            52942
    Unique aggregates announced from the RIPE address blocks:     35549
RIPE Region origin ASes present in the Internet Routing Table:    11818
    RIPE Prefixes per ASN:                                         4.48
RIPE Region origin ASes announcing only one prefix:                6203
RIPE Region transit ASes present in the Internet Routing Table:    1806
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               371067328
    Equivalent to 22 /8s, 30 /16s and 9 /24s
    Percentage of available RIPE address space announced:          85.1

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, 47104-48127
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:                   21370
    Total LACNIC prefixes after maximum aggregation:               5344
    LACNIC Deaggregation factor:                                   4.00
Prefixes being announced from the LACNIC address blocks:          19602
    Unique aggregates announced from the LACNIC address blocks:   10867
LACNIC Region origin ASes present in the Internet Routing Table:    992
    LACNIC Prefixes per ASN:                                      19.76
LACNIC Region origin ASes announcing only one prefix:               327
LACNIC Region transit ASes present in the Internet Routing Table:   166
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC addresses announced to Internet:              55077376
    Equivalent to 3 /8s, 72 /16s and 106 /24s
    Percentage of available LACNIC address space announced:        54.7

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:                   4072
    Total AfriNIC prefixes after maximum aggregation:              1255
    AfriNIC Deaggregation factor:                                  3.24
Prefixes being announced from the AfriNIC address blocks:          4387
    Unique aggregates announced from the AfriNIC address blocks:   1967
AfriNIC Region origin ASes present in the Internet Routing Table:   258
    AfriNIC Prefixes per ASN:                                     17.00
AfriNIC Region origin ASes announcing only one prefix:               90
AfriNIC Region transit ASes present in the Internet Routing Table:   55
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:             12672768
    Equivalent to 0 /8s, 193 /16s and 95 /24s
    Percentage of available AfriNIC address space announced:       37.8

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     1715        538         181   Videsh Sanchar Nigam Ltd. Aut
17488     1372         90         102   Hathway IP Over Cable Interne
 9583     1147         89         495   Sify Limited
 4766      873       6407         357   Korea Telecom (KIX)
 4134      841      13651         345   CHINANET-BACKBONE
23577      820         35         695   Korea Telecom (ATM-MPLS)
18101      715        167          29   Reliance Infocom Ltd Internet
 4780      714        353          61   Digital United Inc.
 9498      677        291          52   BHARTI BT INTERNET LTD.
 4808      629       1156         138   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     4292       3416         337   bellsouth.net, inc. 
  209     2904       3873         618   Qwest 
 6298     1973        315         759   Cox Communicatons 
 1785     1651        710         156   AppliedTheory Corporation 
20115     1568       1260         703   Charter Communications 
 2386     1560        691         899   AT&T Data Communications Serv
 4323     1506       1073         375   Time Warner Telecom
 7018     1399       5782         975   AT&T WorldNet Services
11492     1211        151          18   Cable One 
 6478     1140        239         181   AT&T Worldnet Services 

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      416       1776         373   TDC Tele Danmark
 3301      334       1444         305   TeliaNet Sweden
 8452      328        188          11   TEDATA
 3215      327       2756         106   France Telecom Transpac
 3320      326       7063         274   Deutsche Telekom AG
30890      322         87         176   SC Kappa Invexim SRL
 8866      316         77          21   Bulgarian Telecommunication C
 5462      296        794          27   Telewest Broadband
 8551      287        270          37   Bezeq International
  680      275       2047         265   DFN-IP service G-WiN

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     1594       2608         228   UniNet S.A. de C.V. 
11830      664        299           9   Instituto Costarricense de El
22047      564        270          14   VTR PUNTO NET S.A. 
 7303      485        239          67   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
10620      422        103          62   TVCABLE BOGOTA 
 6471      421         85          48   ENTEL CHILE S.A. 
11172      408        118          71   Servicios Alestra S.A de C.V 
14117      345         23           9   Telefonica del Sur S.A. 
28573      337        441          29   NET Servicos de Comunicao 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      515         65          36   LINKdotNET AS number
20858      402         34           3   EgyNet
 3741      265        855         223   The Internet Solution 
 2018      233        214         138   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      137         10          13   EEPAD TISP TELECOM & INTERNET
 5536      120          8          17   Internet Egypt Network
33776      119          6           3   Starcomms Nigeria Limited
 5713      118        555          68   Telkom SA Ltd 
29571      107         13           8   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     4292       3416         337   bellsouth.net, inc. 
  209     2904       3873         618   Qwest 
 6298     1973        315         759   Cox Communicatons 
 4755     1715        538         181   Videsh Sanchar Nigam Ltd. Aut
 1785     1651        710         156   AppliedTheory Corporation 
 8151     1594       2608         228   UniNet S.A. de C.V. 
20115     1568       1260         703   Charter Communications 
 2386     1560        691         899   AT&T Data Communications Serv
 4323     1506       1073         375   Time Warner Telecom
 7018     1399       5782         975   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      2904        2286      Qwest 
 4755      1715        1534      Videsh Sanchar Nigam Ltd. Aut
 1785      1651        1495      AppliedTheory Corporation 
 8151      1594        1366      UniNet S.A. de C.V. 
17488      1372        1270      Hathway IP Over Cable Interne
 6298      1973        1214      Cox Communicatons 
11492      1211        1193      Cable One 
 4323      1506        1131      Time Warner Telecom
18566      1048        1038      Covad Communications 
 6478      1140         959      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
13632   UNALLOCATED   12.20.55.0/24         6517       Yipes Communications
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
13632   UNALLOCATED   12.31.25.0/24         6517       Yipes Communications
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.154.0/23        7018       AT&T WorldNet Servic

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 
24.75.160.0/19        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 
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        /8:18       /9:9       /10:17      /11:45      /12:146     
/13:293     /14:527     /15:1060    /16:10060   /17:4380    /18:7636    
/19:16082   /20:18794   /21:18490   /22:23203   /23:24269   /24:139965  
/25:772     /26:940     /27:739     /28:89      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2851          4292      bellsouth.net, inc. 
 6298     1948          1973      Cox Communicatons 
  209     1671          2904      Qwest 
 2386     1238          1560      AT&T Data Communications Serv
11492     1192          1211      Cable One 
17488     1180          1372      Hathway IP Over Cable Interne
 1785     1121          1651      AppliedTheory Corporation 
 4755     1050          1715      Videsh Sanchar Nigam Ltd. Aut
 6478     1033          1140      AT&T Worldnet Services 
18566     1029          1048      Covad Communications 

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

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

   4:8         8:137      12:2147     13:2        15:22       16:3      
  17:5        18:13       20:35       24:1087     32:59       38:490    
  40:92       41:721      43:1        44:2        47:12       52:3      
  55:3        56:3        57:26       58:526      59:518      60:453    
  61:961      62:1223     63:2046     64:3210     65:2358     66:3458   
  67:1230     68:774      69:2297     70:845      71:169      72:2028   
  73:6        74:1135     75:170      76:274      77:791      78:799    
  79:318      80:949      81:833      82:573      83:369      84:574    
  85:972      86:399      87:714      88:337      89:1325     90:20     
  91:1446     92:254      93:817      94:132      96:63       97:68     
  98:323      99:7       114:96      115:42      116:1018    117:355    
 118:237     119:483     120:84      121:587     122:837     123:400    
 124:853     125:1193    128:356     129:201     130:134     131:410    
 132:70      133:9       134:178     135:34      136:223     137:93     
 138:141     139:93      140:508     141:102     142:407     143:289    
 144:362     145:51      146:371     147:157     148:514     149:206    
 150:128     151:181     152:145     153:136     154:10      155:284    
 156:175     157:297     158:163     159:301     160:273     161:139    
 162:254     163:155     164:516     165:497     166:367     167:331    
 168:629     169:143     170:431     171:33      172:10      173:33     
 188:1       189:593     190:2099    192:5791    193:4142    194:3250   
 195:2579    196:995     198:3735    199:3307    200:5588    201:1525   
 202:7681    203:8069    204:3935    205:2144    206:2350    207:2738   
 208:3536    209:3425    210:2602    211:1089    212:1420    213:1621   
 214:178     215:50      216:4365    217:1212    218:347     219:436    
 220:1061    221:426     222:315    

End of report




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