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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Dec 02 13:09:07 2005

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@lists.apnic.net

If you have any comments please contact Philip Smith <pfs@cisco.com>.

Routing Table Report   04:00 +10GMT Sat 03 Dec, 2005

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

BGP routing table entries examined:                              176067
    Prefixes after maximum aggregation:                           99087
    Unique aggregates announced to Internet:                      85328
Total ASes present in the Internet Routing Table:                 21035
Origin-only ASes present in the Internet Routing Table:           18309
Origin ASes announcing only one prefix:                            8674
Transit ASes present in the Internet Routing Table:                2726
Transit-only ASes present in the Internet Routing Table:             72
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      23
Prefixes from unregistered ASNs in the Routing Table:                 8
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             13
Number of addresses announced to Internet:                   1469673344
    Equivalent to 87 /8s, 153 /16s and 111 /24s
    Percentage of available address space announced:               39.7
    Percentage of allocated address space announced:               59.7
    Percentage of available address space allocated:               66.4
Total number of prefixes smaller than registry allocations:       84502

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

Prefixes being announced by APNIC Region ASes:                    36873
    Total APNIC prefixes after maximum aggregation:               15699
Prefixes being announced from the APNIC address blocks:           34622
    Unique aggregates announced from the APNIC address blocks:    16944
APNIC Region origin ASes present in the Internet Routing Table:    2419
APNIC Region origin ASes announcing only one prefix:                699
APNIC Region transit ASes present in the Internet Routing Table:    364
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              208047808
    Equivalent to 12 /8s, 102 /16s and 142 /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
APNIC Address Blocks   58/7, 60/7, 124/7, 126/8, 202/7, 210/7, 218/7,
                       220/7 and 222/8

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

Prefixes being announced by ARIN Region ASes:                     92966
    Total ARIN prefixes after maximum aggregation:                55975
Prefixes being announced from the ARIN address blocks:            72481
    Unique aggregates announced from the ARIN address blocks:     27556
ARIN Region origin ASes present in the Internet Routing Table:    10379
ARIN Region origin ASes announcing only one prefix:                3857
ARIN Region transit ASes present in the Internet Routing Table:     963
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               278432000
    Equivalent to 16 /8s, 152 /16s and 137 /24s
    Percentage of available ARIN address space announced:          69.1

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
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 70/6, 74/7, 76/8,
                       198/7, 204/6, 208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                     34421
    Total RIPE prefixes after maximum aggregation:                23247
Prefixes being announced from the RIPE address blocks:            31362
    Unique aggregates announced from the RIPE address blocks:     21087
RIPE Region origin ASes present in the Internet Routing Table:     7370
RIPE Region origin ASes announcing only one prefix:                3865
RIPE Region transit ASes present in the Internet Routing Table:    1217
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               226078976
    Equivalent to 13 /8s, 121 /16s and 177 /24s
    Percentage of available RIPE address space announced:          67.4

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
RIPE Address Blocks    62/8, 80/5, 88/6, 188/8, 193/8, 194/7, 212/7
                       and 217/8

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

Prefixes being announced by LACNIC Region ASes:                   10032
    Total LACNIC prefixes after maximum aggregation:               3316
Prefixes being announced from the LACNIC address blocks:           8323
    Unique aggregates announced from the LACNIC address blocks:    4822
LACNIC Region origin ASes present in the Internet Routing Table:    651
LACNIC Region origin ASes announcing only one prefix:               208
LACNIC Region transit ASes present in the Internet Routing Table:   120
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        23
Number of LACNIC addresses announced to Internet:              22953984
    Equivalent to 1 /8s, 94 /16s and 64 /24s
    Percentage of available LACNIC address space announced:        34.2

LACNIC AS Blocks       26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks  189/8, 190/8, 200/7

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

Prefixes being announced by AfriNIC Region ASes:                   1767
    Total AfriNIC prefixes after maximum aggregation:               850
Prefixes being announced from the AfriNIC address blocks:          1157
    Unique aggregates announced from the AfriNIC address blocks:    834
AfriNIC Region origin ASes present in the Internet Routing Table:   144
AfriNIC Region origin ASes announcing only one prefix:               45
AfriNIC Region transit ASes present in the Internet Routing Table:   21
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2884608
    Equivalent to 0 /8s, 44 /16s and 4 /24s
    Percentage of available AfriNIC address space announced:        8.6

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
 4134     1014       6356         216   CHINANET-BACKBONE
 9583      833         77          12   Sify Limited
 4755      759        260          70   Videsh Sanchar Nigam Ltd. Aut
 1221      692       1370         502   Telstra Pty Ltd
 4766      653       3927         287   Korea Telecom (KIX)
 7545      509        108          70   TPG Internet Pty Ltd
17676      470       6819         100   Softbank BB Corp.
17488      425         25          23   Hathway IP Over Cable Interne
 9498      408        216          65   BHARTI BT INTERNET LTD.
 9443      394         87          80   Primus Telecommunications
 4802      345         73         158   Wantree Development
 2907      340       1764         317   SINET Japan
 9929      331        217          49   China Netcom Corp.
17557      331         24         161   Pakistan Telecom
18302      329        152          25   SK Global co., Ltd
 7474      325        225         224   SingTel Optus Pty Ltd
17974      281         65          16   PT TELEKOMUNIKASI INDONESIA
 9837      272         78         174   Powertel Ltd
18101      271         68          19   Reliance Infocom Ltd Internet
 9800      255        410          67   CHINA UNICOM

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1471       6314         962   AT&T WorldNet Services
 4323     1190        706         233   Time Warner Telecom
  174     1074       5846         993   Cogent Communications
  721      999      21889         299   DLA Systems Automation Center
  701      986       8133         829   UUNET Technologies, Inc. 
 6197      968        432         502   BellSouth Network Solutions, 
 2386      914        530         685   AT&T Data Communications Serv
18566      879        240           7   Covad Communications 
 1239      844       2801         598   Sprint 
  209      658       3607         521   Qwest 
20115      656        533         344   Charter Communications 
11492      632         81          10   Cable One 
22773      585       1476          28   Cox Communications, Inc.
  852      574       1093         382   Telus Advanced Communications
19262      565       1594         137   Verizon Global Networks 
19916      563         49          54   OLM LLC 
  855      562        247          66   Canadian Research Network 
 3602      532        126         103   Sprint Canada, Inc. 
 3356      514      10633         401   Level 3 Communications, LLC 
 6478      502       1432         280   AT&T Worldnet Services 

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      606       1959         479   UUNET - Commercial IP service
 3301      306       1085         292   TeliaNet Sweden
 3320      285       3230         240   Deutsche Telekom AG
 8220      271        475         266   COLT Telecommunications
  680      245       2040         239   DFN-IP service G-WiN
 8708      236        274         217   Romania Data Systems S.A.
 3246      230        477         223   Song Networks
 6746      199         51         171   Dynamic Network Technologies,
 1257      189        712         170   SWIPnet Swedish IP Network
 3269      182       1829          68   TELECOM ITALIA
 5515      180        840         127   Sonera Solution Autonomous Sy
  786      174       1795         174   The JANET IP Service
 5400      166        317         136   BT Ignite European Backbone
 8866      163         37           9   Bulgarian Telecommunication C
 6830      161        669          33   UPC Distribution Services
 3300      158        169          92   AUCS Communications Services 
12479      151        322           5   Uni2 Autonomous System
24863      151         37           6   LINKdotNET AS number
 3215      150       1275          81   France Telecom Transpac
25186      147        211         103   France Telecom Transpac's Tra

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      397        709         170   UniNet S.A. de C.V. 
16814      295         18           7   NSS, S.A. 
11172      289        106          74   Servicios Alestra S.A de C.V 
11664      219         22          28   Keytech SA 
19632      196         14           5   Metropolis Intercom S.A. 
14117      184         11           6   Telefonica del Sur S.A. 
22047      179        128           7   VTR PUNTO NET S.A. 
13999      174         52           9   Mega Cable S.A. de C.V. 
 6147      157        118          21   Telefonica Del Peru 
 7303      152         72          19   Telecom Argentina Stet-France
11556      132         64           3   Cable-Wireless Panama 
19169      127          8          20   Telconet 
10481      121         48           8   Prima S.A. 
 6503      114        148          75   AVANTEL, S.A. 
18822      114          8          11   TELEFONICA MANQUEHUE 
 5639      112         12           9   Telecommunications Services o
21826      112         14          18   INTERCABLE 
 6505      107         88          80   Global One Communicaoes Ltda 
11311       99          8          10   Sinectis S.A. 
 4270       94         17           9   Red de Interconexion Universi

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      271        812         229   The Internet Solution 
 8452      147         44           7   TEDATA
 5536      122          8          16   Internet Egypt Network
 2018      117        298         103   Tertiary Education Network 
 2905       74        155          67   The Internetworking Company o
 6713       69         71          10   Itissalat Al-MAGHRIB
20928       61         16           2   Noor Advanced Technologies AS
24835       59         34           6   RAYA Telecom - Egypt
15475       57         84           4   Nile Online
 5713       38        151          34   Telkom SA Ltd 
33774       33          4          24   AS Number for Telecom Algeria
15706       31          8           3   Sudatel Internet Exchange Aut
 8524       23          1           4   AUCEGYPT Autonomous System
16637       23         10          21   Johnnic e-Ventures 
23889       23          5           9   MAURITIUS TELECOM
10798       22          1          13   Standard Bank of South Africa
21280       21          4           4   Swift Global Kenya Ltd.Is an 
12258       17          3          11   Vodacom Internet Company 
15808       17          2           2   Communication Solutions Ltd i
21491       17         17           2   UTL On-line is RF broadband I

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

  ASN   No of nets  Net Savings Description
 4323      1190         957      Time Warner Telecom
18566       879         872      Covad Communications 
 9583       833         821      Sify Limited
 4134      1014         798      CHINANET-BACKBONE
  721       999         700      DLA Systems Automation Center
 4755       759         689      Videsh Sanchar Nigam Ltd. Aut
11492       632         622      Cable One 
22773       585         557      Cox Communications, Inc.
19916       563         509      OLM LLC 
  855       562         496      Canadian Research Network 
 6197       968         466      BellSouth Network Solutions, 
 5668       486         460      CenturyTel Internet Holdings,
 7545       509         439      TPG Internet Pty Ltd
 3602       532         429      Sprint Canada, Inc. 
19262       565         428      Verizon Global Networks 
17488       425         402      Hathway IP Over Cable Interne
17676       470         370      Softbank BB Corp.
 4766       653         366      Korea Telecom (KIX)
 6467       411         363      E.Spire Communications, Inc. 
 9498       408         343      BHARTI BT INTERNET LTD.

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

Bad AS  Designation  Network              Transit AS  Description
38976   UNALLOCATED   62.192.224.0/19      21166       Satgate autonomous s
38976   UNALLOCATED   62.192.232.0/24      21166       Satgate autonomous s
24413   UNALLOCATED   202.46.32.0/19       17623       China Netcom Corp.
64720   PRIVATE       202.127.124.0/24      4837       chinanet IDC center 
64720   PRIVATE       202.127.125.0/24      4837       chinanet IDC center 
24406   UNALLOCATED   203.119.26.0/24       4808       CNCGROUP IP network:
24406   UNALLOCATED   203.119.27.0/24       4808       CNCGROUP IP network:
24406   UNALLOCATED   203.119.29.0/24       4808       CNCGROUP IP network:

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

Network            Origin AS  Description
132.0.0.0/10           721     DLA Systems Automation Center
137.0.0.0/13           721     DLA Systems Automation Center
158.0.0.0/13           721     DLA Systems Automation Center
175.98.111.0/24       6453     Teleglobe Inc. 
192.43.230.0/24       7575     Australian Academic and Rease
192.44.0.0/24         5501     Fraunhofer Gesellschaft
192.44.0.0/19          702     UUNET - Commercial IP service
192.70.164.0/24      25689     National Research Council of 
192.72.0.0/18         4780     Digital United Inc.
192.72.0.0/16         4780     Digital United Inc.
192.84.205.0/24        719     LANLINK autonomous system
192.119.135.0/24       270     NASA 
192.172.0.0/19         721     DLA Systems Automation Center

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:18       /9:5       /10:8       /11:19      /12:84      
/13:190     /14:342     /15:668     /16:8609    /17:2906    /18:4893    
/19:11062   /20:12227   /21:10256   /22:13524   /23:14646   /24:95662   
/25:352     /26:291     /27:205     /28:25      /29:12      /30:30      
/31:3       /32:30      

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

  ASN   No of nets  Total ann.   Description
18566      863           879      Covad Communications 
 6197      783           968      BellSouth Network Solutions, 
 7018      722          1471      AT&T WorldNet Services
 9583      656           833      Sify Limited
 2386      640           914      AT&T Data Communications Serv
11492      624           632      Cable One 
 4323      568          1190      Time Warner Telecom
19916      557           563      OLM LLC 
 4766      458           653      Korea Telecom (KIX)
  855      434           562      Canadian Research Network 
 7011      402           466      Citizens Utilities 
  702      386           606      UUNET - Commercial IP service
 5668      385           486      CenturyTel Internet Holdings,
 1239      365           844      Sprint 
 6198      356           494      BellSouth Network Solutions, 
 6517      320           345      Yipes Communications, Inc. 
15270      320           347      PaeTec.net -a division of Pae
22773      303           585      Cox Communications, Inc.
13609      298           340      Choice One Communications Inc
18302      298           329      SK Global co., Ltd

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

   4:3         8:40       12:1624     13:1        15:11       16:3      
  17:3        18:3        20:42       24:711      30:2        32:64     
  38:187      40:54       44:3        47:3        52:4        55:1      
  56:3        57:35       58:94       59:103      60:160      61:805    
  62:801      63:1898     64:2925     65:2138     66:2903     67:643    
  68:686      69:1332     70:241      71:36       72:474      80:692    
  81:586      82:487      83:321      84:334      85:381      86:217    
  87:109     125:130     128:151     129:169     130:99      131:304    
 132:35      133:1       134:151     135:45      136:167     137:66     
 138:176     139:75      140:448     141:145     142:404     143:143    
 144:219     145:34      146:304     147:131     148:271     149:186    
 150:108     151:71      152:111     153:94      154:5       155:153    
 156:88      157:118     158:147     159:175     160:84      161:74     
 162:241     163:173     164:184     165:180     166:147     167:242    
 168:461     169:143     170:313     171:12      175:1       192:5740   
 193:3375    194:2432    195:1637    196:712     198:3914    199:3250   
 200:4313    201:467     202:6285    203:6602    204:3834    205:2092   
 206:2432    207:2928    208:2028    209:3446    210:1777    211:799    
 212:1223    213:1382    214:314     215:42      216:3774    217:1178   
 218:220     219:131     220:538     221:325     222:130    

End of report




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