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Weekly Routing Table Report

  • From: Routing Table Analysis
  • Date: Fri Jan 14 13:07:59 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 15 Jan, 2005

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

BGP routing table entries examined:                              153359
    Prefixes after maximum aggregation:                           90003
    Unique aggregates announced to Internet:                      73829
Total ASes present in the Internet Routing Table:                 18787
Origin-only ASes present in the Internet Routing Table:           16317
Origin ASes announcing only one prefix:                            7641
Transit ASes present in the Internet Routing Table:                2470
Transit-only ASes present in the Internet Routing Table:             80
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:                   1365929640
    Equivalent to 81 /8s, 106 /16s and 110 /24s
    Percentage of available address space announced:               36.9
    Percentage of allocated address space announced:               59.6
    Percentage of available address space allocated:               61.9
Total number of prefixes smaller than registry allocations:       71169

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

Prefixes being announced by APNIC Region ASes:                    30377
    Total APNIC prefixes after maximum aggregation:               14775
Prefixes being announced from the APNIC address blocks:           28417
    Unique aggregates announced from the APNIC address blocks:    14569
APNIC Region origin ASes present in the Internet Routing Table:    2192
APNIC Region origin ASes announcing only one prefix:                646
APNIC Region transit ASes present in the Internet Routing Table:    330
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              171452544
    Equivalent to 10 /8s, 56 /16s and 40 /24s
    Percentage of available APNIC address space announced:         78.2

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:                     85730
    Total ARIN prefixes after maximum aggregation:                52065
Prefixes being announced from the ARIN address blocks:            65406
    Unique aggregates announced from the ARIN address blocks:     23973
ARIN Region origin ASes present in the Internet Routing Table:     9797
ARIN Region origin ASes announcing only one prefix:                3533
ARIN Region transit ASes present in the Internet Routing Table:     967
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               238498048
    Equivalent to 14 /8s, 55 /16s and 49 /24s
    Percentage of available ARIN address space announced:          71.1

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:                     29121
    Total RIPE prefixes after maximum aggregation:                20079
Prefixes being announced from the RIPE address blocks:            26017
    Unique aggregates announced from the RIPE address blocks:     17055
RIPE Region origin ASes present in the Internet Routing Table:     6214
RIPE Region origin ASes announcing only one prefix:                3319
RIPE Region transit ASes present in the Internet Routing Table:    1048
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          19
Number of RIPE addresses announced to Internet:               184494528
    Equivalent to 10 /8s, 255 /16s and 41 /24s
    Percentage of available RIPE address space announced:          64.7

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:                    6803
    Total LACNIC prefixes after maximum aggregation:               2382
Prefixes being announced from the LACNIC address blocks:           6667
    Unique aggregates announced from the LACNIC address blocks:    4004
LACNIC Region origin ASes present in the Internet Routing Table:    411
LACNIC Region origin ASes announcing only one prefix:               119
LACNIC Region transit ASes present in the Internet Routing Table:    78
Average LACNIC Region AS path length visible:                       5.0
    Max LACNIC Region AS path length visible:                        16
Number of LACNIC addresses announced to Internet:              17255168
    Equivalent to 1 /8s, 7 /16s and 75 /24s
    Percentage of available LACNIC address space announced:        51.4

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

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

Prefixes being announced by AfriNIC Region ASes:                   1320
    Total AfriNIC prefixes after maximum aggregation:               702
Prefixes being announced from the AfriNIC address blocks:           868
    Unique aggregates announced from the AfriNIC address blocks:    685
AfriNIC Region origin ASes present in the Internet Routing Table:    96
AfriNIC Region origin ASes announcing only one prefix:               24
AfriNIC Region transit ASes present in the Internet Routing Table:   13
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2103552
    Equivalent to 0 /8s, 32 /16s and 25 /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      878       4611         169   Data Communications Bureau
 1221      782       1183         559   Telstra Pty Ltd
 4766      563       3413         275   Korea Internet Exchange for "
 9583      559         48          11   Satyam Infoway Ltd.,
 4755      436        176          79   Videsh Sanchar Nigam Ltd. Aut
17676      391       5868          59   XTAGE CORPORATION
 9443      362         71          77   Primus Telecommunications
 2907      354       1856         327   SINET Japan
 9929      348        164          35   China Netcom Corp.
  703      325        344         255   UUNET
17557      308         22         151   Pakistan Telecom
10036      294         27         270   C&M Communication Co. Ltd.
 2764      281        255         224   connect.com.au pty ltd
 7474      273        268         203   Optus Communications Pty Ltd
 9800      238        383          76   CHINA UNICOM
 7545      236         86          67   TPG Internet Pty Ltd
 9498      231         81          53   BHARTI BT INTERNET LTD.
 4802      230         28         139   Wantree Development
 7563      226         48         158   Korea Internet Infrastructure
17974      223         62          11   PT TELEKOMUNIKASI INDONESIA

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1427       6603         967   AT&T WorldNet Services
  721     1094      21722         304   DLA Systems Automation Center
  701     1056       8316         908   UUNET Technologies, Inc. 
 1239      926       2880         622   Sprint 
 2386      850        508         602   AT&T Data Communications Serv
 4323      827        671         227   Time Warner Telecom
 6197      827        373         371   BellSouth Network Solutions, 
18566      765        208           6   Covad Communications 
  209      669       3437         506   Qwest 
 3356      607      10887         446   Level 3 Communications, LLC 
20115      568        471         304   Charter Communications 
 3561      547       2370         415   Cable & Wireless USA 
  852      527       1126         401   Telus Advanced Communications
 6478      480        818         100   AT&T Worldnet Services 
 7132      452       8379         381   SBC Internet Services
 6198      450        388         200   BellSouth Network Solutions, 
27364      442         44          19   Armstrong Cable Services 
 5668      428         87          18   Century Telephone 
22909      422        914          64   Comcast Cable Corporation 
22773      421        973          24   Cox Communications, Inc. Atla

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      623       2023         514   UUNET - Commercial IP service
 3320      292       2992         231   Deutsche Telekom AG
 3301      288       1112         276   TeliaNet Sweden
 8220      280        466         268   COLT Internet - International
21502      274         40           3   NUMERICABLE is a cabled netwo
  680      254       2041         240   DFN-IP service G-WiN
 3246      226        487         221   Song Networks
13083      217         51           8   Mannesmann Datenverarbeitung 
 1257      205        708         171   SWIPnet Swedish IP Network
 8708      204        119         188   Romania Data Systems S.A.
 5515      191        842         138   Sonera Solution Autonomous Sy
 3215      180        998          76   France Telecom Transpac
  786      176       1794         176   The JANET IP Service
 6746      171         47         136   Dynamic Network Technologies,
 8866      164         18          22   Bulgarian Telecommunication C
 3269      159       1360          70   TELECOM ITALIA
  719      158        322         104   LANLINK autonomous system
 3300      154        165          78   AUCS Communications Services 
25186      145        138         101   France Telecom Transpac's Tra
 5400      137        217         121   BT Ignite European Backbone

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6140      354        140          68   ImpSat
 8151      332        485         143   UniNet S.A. de C.V. 
16814      234         14           6   NSS, S.A. 
11172      214         99          54   Servicios Alestra S.A de C.V 
 6147      188        102          20   Telefonica Del Peru 
11664      159         19          24   Keytech SA 
 7303      148         67          21   Telecom Argentina Stet-France
 6505      138         90          94   Global One Communicaoes Ltda 
 6503      124        147          83   AVANTEL, S.A. 
14117      114          7           5   Telefonica del Sur S.A. 
11992      106          9          31   Integrated Systems 
11556       97         48           3   Cable-Wireless Panama 
13999       88         52           9   Mega Cable S.A. de C.V. 
11311       86          8          22   Sinectis S.A. 
14420       85          6          40   ANDINATEL S.A. 
 6535       84          7          25   Chilesat Servicios  Empresari
10481       82         32           7   Prima S.A. 
 4270       80         18           9   Red de Interconexion Universi
 5639       79          8           8   Telecommunications Services o
15311       78         25          37   Telefonica Empresas 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      268        636         226   The Internet Solution 
 5536      113         16           4   Internet Egypt Network
 2018      102        297          98   Tertiary Education Network 
 2905       77        272          70   The Internetworking Company o
20928       77         16           2   Noor Advanced Technologies AS
24835       54         34           7   RAYA Telecom - Egypt
 8452       47         20           5   TEDATA
 6713       34         38           9   Itissalat Al-MAGHRIB
 9129       33          3           2   UUNET Kenya
 5713       27        141          24   Telkom SA Ltd 
12455       24          7           4   Jambonet Autonomous system
 8524       23          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 
21280       18          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       15          1           3   UTL On-line is RF broadband I
15808       13          1           2   Communication Solutions Ltd i

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

  ASN   No of nets  Net Savings Description
  721      1094         790      DLA Systems Automation Center
18566       765         759      Covad Communications 
 4134       878         709      Data Communications Bureau
 4323       827         600      Time Warner Telecom
 9583       559         548      Satyam Infoway Ltd.,
 6197       827         456      BellSouth Network Solutions, 
27364       442         423      Armstrong Cable Services 
 5668       428         410      Century Telephone 
22773       421         397      Cox Communications, Inc. Atla
 6478       480         380      AT&T Worldnet Services 
22909       422         358      Comcast Cable Corporation 
 4755       436         357      Videsh Sanchar Nigam Ltd. Aut
 6467       372         341      E.Spire Communications, Inc. 
17676       391         332      XTAGE CORPORATION
 9929       348         313      China Netcom Corp.
 1239       926         304      Sprint 
13609       334         299      Choice One Communications Inc
 4766       563         288      Korea Internet Exchange for "
 6140       354         286      ImpSat
 9443       362         285      Primus Telecommunications

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

Bad AS  Designation  Network              Transit AS  Description
64826   PRIVATE       64.200.250.0/23       7911       Williams Communicati
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      
/13:142     /14:315     /15:570     /16:8242    /17:2358    /18:4029    
/19:9964    /20:10470   /21:8206    /22:11447   /23:12857   /24:83778   
/25:258     /26:234     /27:122     /28:63      /29:35      /30:123     
/31:0       /32:43      

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

  ASN   No of nets  Total ann.   Description
18566      750           765      Covad Communications 
 6197      673           827      BellSouth Network Solutions, 
 2386      626           850      AT&T Data Communications Serv
 7018      590          1427      AT&T WorldNet Services
27364      427           442      Armstrong Cable Services 
 9583      386           559      Satyam Infoway Ltd.,
 4766      381           563      Korea Internet Exchange for "
  702      380           623      UUNET - Commercial IP service
 5668      371           428      Century Telephone 
 1239      367           926      Sprint 
 6198      327           450      BellSouth Network Solutions, 
10036      294           294      C&M Communication Co. Ltd.
13609      291           334      Choice One Communications Inc
 6517      288           312      Yipes Communications, Inc. 
 6467      283           372      E.Spire Communications, Inc. 
 4323      277           827      Time Warner Telecom
 9929      277           348      China Netcom Corp.
21502      271           274      NUMERICABLE is a cabled netwo
  701      263          1056      UUNET Technologies, Inc. 
11456      261           306      Carolina Online, Inc. 

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

   4:4         8:10       12:1476     13:1        15:6        16:2      
  17:3        18:4        20:4        24:727      32:68       33:3      
  38:88       40:55       44:3        47:2        52:3        55:2      
  56:3        57:21       59:2        60:12       61:652      62:518    
  63:1848     64:2539     65:2078     66:2503     67:480      68:493    
  69:858      70:52       71:1        72:29       80:541      81:660    
  82:397      83:228      84:86       85:74      128:122     129:167    
 130:115     131:193     132:35      134:145     135:30      136:188    
 137:79      138:163     139:39      140:199     141:102     142:133    
 143:124     144:169     145:45      146:282     147:88      148:264    
 149:128     150:93      151:62      152:115     153:71      154:2      
 155:134     156:70      157:74      158:149     159:162     160:64     
 161:60      162:408     163:82      164:213     165:157     166:127    
 167:223     168:371     169:131     170:323     171:8       192:5659   
 193:3050    194:2231    195:1556    196:601     198:3861    199:3264   
 200:3926    201:43      202:5109    203:5900    204:3557    205:2084   
 206:2272    207:2617    208:2105    209:3044    210:1528    211:743    
 212:1148    213:1259    214:235     215:31      216:3726    217:1062   
 218:179     219:86      220:322     221:78      222:57     

End of report




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