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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Dec 24 13:07:37 2004

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 25 Dec, 2004

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

BGP routing table entries examined:                              153434
    Prefixes after maximum aggregation:                           89843
    Unique aggregates announced to Internet:                      73421
Total ASes present in the Internet Routing Table:                 18694
Origin-only ASes present in the Internet Routing Table:           16228
Origin ASes announcing only one prefix:                            7603
Transit ASes present in the Internet Routing Table:                2466
Transit-only ASes present in the Internet Routing Table:             79
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      19
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:             16
Number of addresses announced to Internet:                   1361259876
    Equivalent to 81 /8s, 35 /16s and 45 /24s
    Percentage of available address space announced:               36.7
    Percentage of allocated address space announced:               59.4
    Percentage of available address space allocated:               61.9
Total number of prefixes smaller than registry allocations:       71183

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

Prefixes being announced by APNIC Region ASes:                    30059
    Total APNIC prefixes after maximum aggregation:               14724
Prefixes being announced from the APNIC address blocks:           28109
    Unique aggregates announced from the APNIC address blocks:    14507
APNIC Region origin ASes present in the Internet Routing Table:    2176
APNIC Region origin ASes announcing only one prefix:                647
APNIC Region transit ASes present in the Internet Routing Table:    328
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              169704704
    Equivalent to 10 /8s, 29 /16s and 125 /24s
    Percentage of available APNIC address space announced:         77.4

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
                       23552-24575
APNIC Address Blocks   58/7, 60/7, 202/7, 210/7, 218/7, 220/7 and 222/8

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

Prefixes being announced by ARIN Region ASes:                     86430
    Total ARIN prefixes after maximum aggregation:                52101
Prefixes being announced from the ARIN address blocks:            66161
    Unique aggregates announced from the ARIN address blocks:     23807
ARIN Region origin ASes present in the Internet Routing Table:     9785
ARIN Region origin ASes announcing only one prefix:                3524
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:                          16
Number of ARIN addresses announced to Internet:               237111552
    Equivalent to 14 /8s, 34 /16s and 9 /24s
    Percentage of available ARIN address space announced:          70.7

ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
                       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,
                       26624-27647,29695-30719, 31744-33791
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 70/7, 72/8, 198/7, 204/6,
                       208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                     28859
    Total RIPE prefixes after maximum aggregation:                19924
Prefixes being announced from the RIPE address blocks:            25774
    Unique aggregates announced from the RIPE address blocks:     16904
RIPE Region origin ASes present in the Internet Routing Table:     6151
RIPE Region origin ASes announcing only one prefix:                3290
RIPE Region transit ASes present in the Internet Routing Table:    1055
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          19
Number of RIPE addresses announced to Internet:               183483136
    Equivalent to 10 /8s, 239 /16s and 187 /24s
    Percentage of available RIPE address space announced:          64.3

RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
                       2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-34815
RIPE Address Blocks    62/8, 80/5, 88/8, 188/8, 193/8, 194/7, 212/7
                       and 217/8

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

Prefixes being announced by LACNIC Region ASes:                    6796
    Total LACNIC prefixes after maximum aggregation:               2390
Prefixes being announced from the LACNIC address blocks:           6654
    Unique aggregates announced from the LACNIC address blocks:    4088
LACNIC Region origin ASes present in the Internet Routing Table:    410
LACNIC Region origin ASes announcing only one prefix:               120
LACNIC Region transit ASes present in the Internet Routing Table:    76
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        15
Number of LACNIC addresses announced to Internet:              16985344
    Equivalent to 1 /8s, 3 /16s and 45 /24s
    Percentage of available LACNIC address space announced:        50.6

LACNIC AS Blocks       26592-26623, 27648-28671
LACNIC Address Blocks  200/7

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

Prefixes being announced by AfriNIC Region ASes:                   1283
    Total AfriNIC prefixes after maximum aggregation:               704
Prefixes being announced from the AfriNIC address blocks:           860
    Unique aggregates announced from the AfriNIC address blocks:    682
AfriNIC Region origin ASes present in the Internet Routing Table:    95
AfriNIC Region origin ASes announcing only one prefix:               22
AfriNIC Region transit ASes present in the Internet Routing Table:   12
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2100224
    Equivalent to 0 /8s, 32 /16s and 12 /24s
    Percentage of available AfriNIC address space announced:       12.5

AfriNIC AS Blocks      <none>
AfriNIC Address Blocks 196/8

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4134      869       4433         168   Data Communications Bureau
 1221      791       1184         565   Telstra Pty Ltd
 9583      580         47          37   Satyam Infoway Ltd.,
 4766      552       3409         270   Korea Internet Exchange for "
 4755      437        176          91   Videsh Sanchar Nigam Ltd. Aut
17676      390       5852          60   XTAGE CORPORATION
 9443      362         71          77   Primus Telecommunications
 2907      355       1856         328   SINET Japan
 9929      354        164          40   China Netcom Corp.
  703      319        344         248   UUNET
17557      307         22         150   Pakistan Telecom
10036      290         26         266   C&M Communication Co. Ltd.
 2764      285        272         228   connect.com.au pty ltd
 7474      274        267         203   Optus Communications Pty Ltd
 9800      234        381          73   CHINA UNICOM
 9498      232         81          54   BHARTI BT INTERNET LTD.
 4802      231         28         140   Wantree Development
 7563      225         48         164   Korea Internet Infrastructure
 4814      223        232           6   China Telecom (Group)
17974      220         63          14   PT TELEKOMUNIKASI INDONESIA

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1425       6571         984   AT&T WorldNet Services
  701     1099       8357         896   UUNET Technologies, Inc. 
  721     1074      21840         299   DLA Systems Automation Center
 1239      939       2883         628   Sprint 
 2386      858        528         611   AT&T Data Communications Serv
 6197      823        384         354   BellSouth Network Solutions, 
 4323      821        670         223   Time Warner Telecom
18566      756        208           6   Covad Communications 
  209      655       3405         502   Qwest 
 3356      615      10889         450   Level 3 Communications, LLC 
20115      574        467         301   Charter Communications 
 3561      549       2369         416   Cable & Wireless USA 
  852      528       1126         401   Telus Advanced Communications
 7843      482        729         100   Adelphia Corp. 
 6478      467        814          97   AT&T Worldnet Services 
 6198      450        388         200   BellSouth Network Solutions, 
 7132      449       8290         382   SBC Internet Services
27364      442         44          20   Armstrong Cable Services 
 5668      424         87          18   Century Telephone 
22909      419        907          65   Comcast Cable Corporation 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      627       2023         518   UUNET - Commercial IP service
 3320      296       2992         233   Deutsche Telekom AG
 3301      286       1112         274   TeliaNet Sweden
 8220      277        464         265   COLT Internet - International
  680      251       2025         239   DFN-IP service G-WiN
21502      235         40           3   NUMERICABLE is a cabled netwo
 3246      224        483         220   Song Networks
 9121      217        211          16   TTnet Autonomous System
13083      217         51           8   Mannesmann Datenverarbeitung 
 8708      207        118         191   Romania Data Systems S.A.
 1257      203        708         169   SWIPnet Swedish IP Network
 5515      193        842         140   Sonera Solution Autonomous Sy
  786      176       1794         176   The JANET IP Service
 3215      176        998          76   France Telecom Transpac
 6746      168         47         136   Dynamic Network Technologies,
 8866      162         18          21   Bulgarian Telecommunication C
  719      159        322         104   LANLINK autonomous system
 3269      159       1362          70   TELECOM ITALIA
 3300      153        165          77   AUCS Communications Services 
25186      144        138         100   France Telecom Transpac's Tra

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      351        140          68   ImpSat
 8151      320        473         141   UniNet S.A. de C.V. 
16814      234         14           6   NSS, S.A. 
11172      217         99          55   Servicios Alestra S.A de C.V 
 6147      184         94          20   Telefonica Del Peru 
11664      171         14          24   Keytech SA 
 7303      157         68          18   Telecom Argentina Stet-France
 6505      140         90          96   Global One Communicaoes Ltda 
 6503      128        148          85   AVANTEL, S.A. 
11992      102          9          31   Integrated Systems 
14117       98          6           4   Telefonica del Sur S.A. 
11556       97         48           3   Cable-Wireless Panama 
14420       87          6          42   ANDINATEL S.A. 
11311       86          8          22   Sinectis S.A. 
 6535       84          7          25   Chilesat Servicios  Empresari
10481       82         32           7   Prima S.A. 
13999       81         52           9   Mega Cable S.A. de C.V. 
 4270       79         18           9   Red de Interconexion Universi
15311       78         25          37   Telefonica Empresas 
 5639       77          8           8   Telecommunications Services o

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      269        636         226   The Internet Solution 
 5536      113         16           4   Internet Egypt Network
 2018      102        297          98   Tertiary Education Network 
 2905       76        271          69   The Internetworking Company o
20928       55         16           2   Noor Advanced Technologies AS
24835       44         34           7   RAYA Telecom - Egypt
 6713       34         38           9   Itissalat Al-MAGHRIB
 8452       34         20           5   TEDATA
 9129       33          3           2   UUNET Kenya
 5713       27        141          24   Telkom SA Ltd 
12455       27          7           4   Jambonet Autonomous system
 8524       25          1           4   AUCEGYPT Autonomous System
16637       22         10          19   Johnnic e-Ventures 
10798       18          1          12   Standard Bank of South Africa
12258       18          3          12   Vodacom Internet Company 
11845       17          9          16   Data Pro Business Online 
21280       17          2           3   Swift Global Kenya Ltd.Is an 
 8346       15          7          14   SONATEL-AS Autonomous System
15706       15          4           2   Sudatel Internet Exchange Aut
21491       14          1           3   UTL On-line is RF broadband I

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

  ASN   No of nets  Net Savings Description
  721      1074         775      DLA Systems Automation Center
18566       756         750      Covad Communications 
 4134       869         701      Data Communications Bureau
 4323       821         598      Time Warner Telecom
 9583       580         543      Satyam Infoway Ltd.,
 6197       823         469      BellSouth Network Solutions, 
27364       442         422      Armstrong Cable Services 
 5668       424         406      Century Telephone 
22773       416         393      Cox Communications, Inc. Atla
 7843       482         382      Adelphia Corp. 
 6478       467         370      AT&T Worldnet Services 
22909       419         354      Comcast Cable Corporation 
 4755       437         346      Videsh Sanchar Nigam Ltd. Aut
 6467       376         345      E.Spire Communications, Inc. 
17676       390         330      XTAGE CORPORATION
 9929       354         314      China Netcom Corp.
 1239       939         311      Sprint 
13609       328         294      Choice One Communications Inc
 4355       393         292      EarthLink, Inc. 
 9443       362         285      Primus Telecommunications

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

Bad AS  Designation  Network              Transit AS  Description
 1877   UNALLOCATED   192.108.199.0/24      1876       Southern Methodist U
26422   UNALLOCATED   196.46.184.0/22       3741       The Internet Solutio
64512   PRIVATE       199.213.17.0/25      15296       Netera Alliance Inc.
64512   PRIVATE       199.213.17.128/25    15296       Netera Alliance Inc.
64512   PRIVATE       199.216.97.0/28      15296       Netera Alliance Inc.
65002   PRIVATE       208.179.184.0/24     11509       The Pajo Group 
65529   PRIVATE       216.21.199.0/24      14697       VDot.Net 
65529   PRIVATE       216.152.237.0/24     14697       VDot.Net 

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
192.44.0.0/19          702     UUNET - Commercial IP service
192.70.164.0/24      25689     National Research Council of 
192.83.16.0/20        5515     Sonera Solution Autonomous Sy
192.83.32.0/19        5515     Sonera Solution Autonomous Sy
192.83.96.0/22        5515     Sonera Solution Autonomous Sy
192.83.100.0/24       5515     Sonera Solution Autonomous Sy
192.84.205.0/24        719     LANLINK autonomous system
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T WorldNet Services
192.136.79.0/24        719     LANLINK autonomous system
192.172.0.0/19         721     DLA Systems Automation Center
192.172.11.0/24        721     DLA Systems Automation Center
192.200.100.0/24      7018     AT&T WorldNet Services

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

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:19       /9:3       /10:7       /11:15      /12:59      
/13:139     /14:315     /15:563     /16:8226    /17:2340    /18:4021    
/19:10024   /20:10605   /21:8199    /22:11381   /23:13017   /24:83580   
/25:281     /26:239     /27:127     /28:60      /29:35      /30:130     
/31:0       /32:49      

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

  ASN   No of nets  Total ann.   Description
18566      741           756      Covad Communications 
 6197      669           823      BellSouth Network Solutions, 
 2386      628           858      AT&T Data Communications Serv
 7018      584          1425      AT&T WorldNet Services
27364      427           442      Armstrong Cable Services 
 9583      410           580      Satyam Infoway Ltd.,
  702      382           627      UUNET - Commercial IP service
 1239      373           939      Sprint 
 4766      372           552      Korea Internet Exchange for "
 5668      367           424      Century Telephone 
 6198      327           450      BellSouth Network Solutions, 
 6517      290           313      Yipes Communications, Inc. 
10036      290           290      C&M Communication Co. Ltd.
13609      286           328      Choice One Communications Inc
 6467      285           376      E.Spire Communications, Inc. 
 9929      283           354      China Netcom Corp.
  701      282          1099      UUNET Technologies, Inc. 
 4323      267           821      Time Warner Telecom
11456      258           303      Carolina Online, Inc. 
20115      250           574      Charter Communications 

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

   4:4         8:10       12:1462     13:1        15:5        16:2      
  17:3        18:3        20:4        24:700      32:67       33:3      
  38:87       40:55       44:3        47:2        52:3        55:2      
  56:3        57:23       59:1        60:12       61:702      62:523    
  63:1853     64:2519     65:2082     66:2535     67:478      68:517    
  69:856      70:48       71:1        72:21       80:525      81:585    
  82:355      83:217      84:73       85:70      128:106     129:164    
 130:89      131:193     132:36      134:187     135:30      136:186    
 137:70      138:193     139:34      140:230     141:108     142:135    
 143:124     144:166     145:41      146:283     147:87      148:262    
 149:129     150:91      151:62      152:118     153:70      154:2      
 155:132     156:62      157:72      158:146     159:162     160:63     
 161:60      162:383     163:83      164:189     165:170     166:125    
 167:222     168:365     169:131     170:312     171:8       192:5658   
 193:3022    194:2221    195:1546    196:595     198:3890    199:3309   
 200:3979    201:34      202:5035    203:5826    204:3590    205:2105   
 206:2306    207:2540    208:2111    209:3054    210:1572    211:709    
 212:1167    213:1254    214:231     215:31      216:3742    217:1067   
 218:178     219:89      220:301     221:89      222:33     

End of report