North American Network Operators Group

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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Sep 24 14:09:19 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 [email protected]

If you have any comments please contact Philip Smith <[email protected]>.

Routing Table Report   04:00 +10GMT Sat 25 Sep, 2004

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

BGP routing table entries examined:                              147727
    Prefixes after maximum aggregation:                           87611
    Unique aggregates announced to Internet:                      70315
Total ASes present in the Internet Routing Table:                 18109
Origin-only ASes present in the Internet Routing Table:           15745
Origin ASes announcing only one prefix:                            7345
Transit ASes present in the Internet Routing Table:                2364
Transit-only ASes present in the Internet Routing Table:             73
Average AS path length visible in the Internet Routing Table:       4.7
    Max AS path length visible:                                      22
Prefixes from unregistered ASNs in the Routing Table:                12
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             17
Number of addresses announced to Internet:                   1340351908
    Equivalent to 79 /8s, 228 /16s and 37 /24s
    Percentage of available address space announced:               36.2
    Percentage of allocated address space announced:               58.4
    Percentage of available address space allocated:               61.9
Total number of prefixes smaller than registry allocations:       67875

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

Prefixes being announced by APNIC Region ASes:                    28428
    Total APNIC prefixes after maximum aggregation:               14225
Prefixes being announced from the APNIC address blocks:           26595
    Unique aggregates announced from the APNIC address blocks:    14165
APNIC Region origin ASes present in the Internet Routing Table:    2131
APNIC Region origin ASes announcing only one prefix:                635
APNIC Region transit ASes present in the Internet Routing Table:    325
Average APNIC Region AS path length visible:                        4.8
    Max APNIC Region AS path length visible:                         22
Number of APNIC addresses announced to Internet:              163812992
    Equivalent to 9 /8s, 195 /16s and 150 /24s
    Percentage of available APNIC address space announced:         74.7

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:                     84217
    Total ARIN prefixes after maximum aggregation:                51327
Prefixes being announced from the ARIN address blocks:            64419
    Unique aggregates announced from the ARIN address blocks:     22785
ARIN Region origin ASes present in the Internet Routing Table:     9575
ARIN Region origin ASes announcing only one prefix:                3429
ARIN Region transit ASes present in the Internet Routing Table:     916
Average ARIN Region AS path length visible:                         4.4
    Max ARIN Region AS path length visible:                          18
Number of ARIN addresses announced to Internet:               232724224
    Equivalent to 13 /8s, 223 /16s and 23 /24s
    Percentage of available ARIN address space announced:          69.4

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:                     27363
    Total RIPE prefixes after maximum aggregation:                19057
Prefixes being announced from the RIPE address blocks:            24203
    Unique aggregates announced from the RIPE address blocks:     15867
RIPE Region origin ASes present in the Internet Routing Table:     5845
RIPE Region origin ASes announcing only one prefix:                3144
RIPE Region transit ASes present in the Internet Routing Table:    1002
Average RIPE Region AS path length visible:                         5.3
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               171842624
    Equivalent to 10 /8s, 62 /16s and 28 /24s
    Percentage of available RIPE address space announced:          60.3

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:                    6466
    Total LACNIC prefixes after maximum aggregation:               2311
Prefixes being announced from the LACNIC address blocks:           6299
    Unique aggregates announced from the LACNIC address blocks:    3623
LACNIC Region origin ASes present in the Internet Routing Table:    393
LACNIC Region origin ASes announcing only one prefix:               117
LACNIC Region transit ASes present in the Internet Routing Table:    79
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              16081152
    Equivalent to 0 /8s, 245 /16s and 97 /24s
    Percentage of available LACNIC address space announced:        47.9

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

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

Prefixes being announced by AfriNIC Region ASes:                   1245
    Total AfriNIC prefixes after maximum aggregation:               688
Prefixes being announced from the AfriNIC address blocks:           838
    Unique aggregates announced from the AfriNIC address blocks:    675
AfriNIC Region origin ASes present in the Internet Routing Table:    92
AfriNIC Region origin ASes announcing only one prefix:               20
AfriNIC Region transit ASes present in the Internet Routing Table:   12
Average AfriNIC Region AS path length visible:                      4.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:              2063360
    Equivalent to 0 /8s, 31 /16s and 124 /24s
    Percentage of available AfriNIC address space announced:       12.3

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      838       4385         158   Data Communications Bureau
 1221      808       1183         581   Telstra Pty Ltd
 4766      544       3408         266   Korea Internet Exchange for "
 9583      533         41         102   Satyam Infoway Ltd.,
 4755      366        133          48   Videsh Sanchar Nigam Ltd. Aut
17676      364       5436          52   XTAGE CORPORATION
 9443      355         70          81   Primus Telecommunications
 2907      351       1840         326   SINET Japan
 9929      344        161          33   China Netcom Corp.
17557      312         23         154   Pakistan Telecom
  703      311        342         240   UUNET
 2764      284        274         233   connect.com.au pty ltd
 7474      273        269         201   Optus Communications Pty Ltd
 9942      243         73         130   COMindico Australia
 4802      234         28         143   Wantree Development
 9800      229        372          66   CHINA UNICOM
 9498      223         49          49   BHARTI BT INTERNET LTD.
 7563      209         48         163   Korea Internet Infrastructure
 4837      202       2264         106   chinanet IDC center beijing n
10036      202         18         185   C&M Communication Co. Ltd.

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1408       6752         979   AT&T WorldNet Services
  701     1267       8425         914   UUNET Technologies, Inc. 
 1239      947       2883         629   Sprint 
 2386      835        529         598   AT&T Data Communications Serv
 4323      789        633         215   Time Warner Telecom
18566      740        208           6   Covad Communications 
 6197      725        365         351   BellSouth Network Solutions, 
  721      719      21020         296   DLA Systems Automation Center
  209      626       3465         496   Qwest 
 3356      588      10923         448   Level 3 Communications, LLC 
20115      585        424         298   Charter Communications 
 3561      530       2486         369   Cable & Wireless USA 
  852      511       1141         397   Telus Advanced Communications
 7843      491        681          98   Adelphia Corp. 
 7132      434       8141         376   SBC Internet Services
  705      433        163         274   UUNET Technologies, Inc. 
 6198      430        396         199   BellSouth Network Solutions, 
22773      399        960          18   Cox Communications, Inc. Atla
 5668      396         87          18   Century Telephone 
 6467      394        149          30   E.Spire Communications, Inc. 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      643       2032         531   UUNET - Commercial IP service
 3320      299       2470         236   Deutsche Telekom AG
 8220      280        460         266   COLT Internet - International
 3301      279       1100         269   TeliaNet Sweden
21502      268         40           3   NUMERICABLE is a cabled netwo
  680      251       2025         239   DFN-IP service G-WiN
 3246      217        475         214   Song Networks
13083      217         51           8   Mannesmann Datenverarbeitung 
 1257      208        744         178   SWIPnet Swedish IP Network
 8708      205        113         183   Romania Data Systems S.A.
 5515      198        842         144   Sonera Solution Autonomous Sy
 3215      184        876          77   France Telecom Transpac
  786      177       1794         177   The JANET IP Service
  719      157        288         102   LANLINK autonomous system
 6746      151         29         128   Dynamic Network Technologies,
25186      149        154         106   France Telecom Transpac's Tra
 3303      148        610         130   Swisscom Ltd
 5400      148        206         120   BT Ignite European Backbone
 3269      145       1195          66   TELECOM ITALIA
 8866      145         17          23   Bulgarian Telecommunication C

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      366        138          67   ImpSat
 8151      301        439         133   UniNet S.A. de C.V. 
11172      289        100          54   Servicios Alestra S.A de C.V 
16814      212         13           7   NSS, S.A. 
 6147      191         86          19   Telefonica Del Peru 
11664      149         13          33   Keytech SA 
 6505      137         90          94   Global One Communicaoes Ltda 
 6503      127        164          86   AVANTEL, S.A. 
 7303      127         57          21   Telecom Argentina Stet-France
11992       90          9          31   Integrated Systems 
14420       86          7          37   ANDINATEL S.A. 
 6535       85          7          19   Chilesat Servicios  Empresari
10620       85         10           4   TVCABLE BOGOTA 
11311       83          8          22   Sinectis S.A. 
10481       81         32           7   Prima S.A. 
11556       81         41           3   Cable-Wireless Panama 
 5639       77          8           8   Telecommunications Services o
15311       76         21          36   Telefonica Empresas 
27716       74          9          12   Eveloz
14117       71          6           4   Telefonica del Sur S.A. 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      251        631         218   The Internet Solution 
 5536      114         16           4   Internet Egypt Network
 2018       94        297          92   Tertiary Education Network 
 2905       92        276          81   The Internetworking Company o
20928       59         16           1   Noor Advanced Technologies AS
14988       45         16           1   Botswana Telecommunications C
24835       34         34           7   RAYA Telecom - Egypt
 6713       31         42          10   Itissalat Al-MAGHRIB
 9129       30          3           4   UUNET Kenya
 5713       26        125          24   Telkom SA Ltd 
 8524       25          1           4   AUCEGYPT Autonomous System
16637       24         10          19   Johnnic e-Ventures 
10798       18          1          12   Standard Bank of South Africa
12258       18          3          12   Vodacom Internet Company 
12455       17          4           2   Jambonet Autonomous system
21491       16          1           3   UTL On-line is RF broadband I
 8346       15          7          14   SONATEL-AS Autonomous System
15706       15          4           2   Sudatel Internet Exchange Aut
21280       14          2           3   Swift Global Kenya Ltd.Is an 
15808       13          1           2   Communication Solutions Ltd i

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

  ASN   No of nets  Net Savings Description
18566       740         734      Covad Communications 
 4134       838         680      Data Communications Bureau
 4323       789         574      Time Warner Telecom
 9583       533         431      Satyam Infoway Ltd.,
  721       719         423      DLA Systems Automation Center
 7843       491         393      Adelphia Corp. 
22773       399         381      Cox Communications, Inc. Atla
 5668       396         378      Century Telephone 
27364       394         375      Armstrong Cable Services 
 6197       725         374      BellSouth Network Solutions, 
 6467       394         364      E.Spire Communications, Inc. 
  701      1267         353      UUNET Technologies, Inc. 
22909       376         338      Comcast Cable Corporation 
 1239       947         318      Sprint 
 4755       366         318      Videsh Sanchar Nigam Ltd. Aut
17676       364         312      XTAGE CORPORATION
 9929       344         311      China Netcom Corp.
 6140       366         299      ImpSat
 6478       364         293      AT&T Worldnet Services 
 4355       389         290      EarthLink, Inc. 

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

Bad AS  Designation  Network              Transit AS  Description
23456   UNALLOCATED   62.241.160.0/19      25346       Pipex Internet UK IS
23456   UNALLOCATED   81.86.0.0/16         25346       Pipex Internet UK IS
23456   UNALLOCATED   81.178.0.0/15        25346       Pipex Internet UK IS
64513   PRIVATE       164.78.128.0/17       7610       SINGAPORE ADVANCE RE
64513   PRIVATE       164.78.249.0/24       7610       SINGAPORE ADVANCE RE
64513   PRIVATE       164.78.252.0/24       7610       SINGAPORE ADVANCE RE
65217   PRIVATE       192.102.236.0/24       217       University of Minnes
 1877   UNALLOCATED   192.108.199.0/24      1876       Southern Methodist U
22750   UNALLOCATED   196.44.64.0/19        3741       The Internet Solutio
22750   UNALLOCATED   196.44.86.0/24        2905       The Internetworking 
22750   UNALLOCATED   196.44.224.0/20       3741       The Internet Solutio
22750   UNALLOCATED   196.44.234.0/24       2905       The Internetworking 

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

Network            Origin AS  Description
111.0.0.0/24          7563     Korea Internet Infrastructure
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
192.43.230.0/24       4738     South Australian Academic Res
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

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       /10:6       /11:15      /12:63      
/13:134     /14:307     /15:540     /16:8059    /17:2227    /18:3862    
/19:9809    /20:10347   /21:7785    /22:10746   /23:12388   /24:80598   
/25:241     /26:209     /27:109     /28:58      /29:43      /30:107     
/31:0       /32:52      

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

  ASN   No of nets  Total ann.   Description
18566      725           740      Covad Communications 
 2386      602           835      AT&T Data Communications Serv
 6197      576           725      BellSouth Network Solutions, 
 7018      552          1408      AT&T WorldNet Services
  702      394           643      UUNET - Commercial IP service
27364      378           394      Armstrong Cable Services 
 1239      375           947      Sprint 
 9583      371           533      Satyam Infoway Ltd.,
 4766      363           544      Korea Internet Exchange for "
  701      356          1267      UUNET Technologies, Inc. 
 5668      346           396      Century Telephone 
 6198      316           430      BellSouth Network Solutions, 
20115      298           585      Charter Communications 
 6467      291           394      E.Spire Communications, Inc. 
 9929      275           344      China Netcom Corp.
 6517      265           292      Yipes Communications, Inc. 
13609      265           308      Choice One Communications Inc
21502      265           268      NUMERICABLE is a cabled netwo
 6347      246           332      SAVVIS Communications Corpora
 3320      245           299      Deutsche Telekom AG

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

   4:4         8:3        12:1395     13:1        15:5        16:2      
  17:3        20:6        24:724      32:66       33:2        38:78     
  40:54       44:4        47:2        52:3        55:1        56:3      
  57:17       60:6        61:510      62:505      63:1840     64:2403   
  65:2057     66:2497     67:396      68:549      69:714      70:73     
  80:523      81:550      82:301      83:158      84:25      111:1      
 128:121     129:171     130:87      131:189     132:27      134:187    
 135:17      136:180     137:55      138:180     139:35      140:183    
 141:107     142:119     143:67      144:160     145:42      146:293    
 147:94      148:384     149:110     150:87      151:65      152:152    
 153:68      154:2       155:127     156:59      157:71      158:143    
 159:163     160:56      161:71      162:373     163:81      164:214    
 165:161     166:118     167:223     168:344     169:120     170:270    
 171:9       192:5579    193:2906    194:2119    195:1484    196:597    
 198:3675    199:3274    200:3833    201:20      202:4852    203:5690   
 204:3244    205:2092    206:2324    207:2576    208:2141    209:3028   
 210:1487    211:622     212:1092    213:1198    214:134     215:31     
 216:3707    217:1012    218:176     219:101     220:257     221:37     
 222:44     

End of report