[afnog] Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Sat Apr 9 04:18:54 EAT 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 at lists.apnic.net

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

Routing Table Report   04:00 +10GMT Sat 09 Apr, 2005

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

BGP routing table entries examined:                              139674
    Prefixes after maximum aggregation:                           83474
    Unique aggregates announced to Internet:                      67116
Total ASes present in the Internet Routing Table:                 17729
Origin-only ASes present in the Internet Routing Table:           15381
Origin ASes announcing only one prefix:                            7282
Transit ASes present in the Internet Routing Table:                2348
Transit-only ASes present in the Internet Routing Table:            194
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:                38
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             13
Number of addresses announced to Internet:                   1212269440
    Equivalent to 72 /8s, 65 /16s and 195 /24s
    Percentage of available address space announced:               32.7
    Percentage of allocated address space announced:               51.3
    Percentage of available address space allocated:               63.7
Total number of prefixes smaller than registry allocations:       61623

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

Prefixes being announced by APNIC Region ASes:                    27665
    Total APNIC prefixes after maximum aggregation:               13807
Prefixes being announced from the APNIC address blocks:           25625
    Unique aggregates announced from the APNIC address blocks:    13601
APNIC Region origin ASes present in the Internet Routing Table:    2170
APNIC Region origin ASes announcing only one prefix:                672
APNIC Region transit ASes present in the Internet Routing Table:    331
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              100659328
    Equivalent to 5 /8s, 255 /16s and 240 /24s
    Percentage of available APNIC address space announced:         37.4

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575
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:                     79734
    Total ARIN prefixes after maximum aggregation:                49337
Prefixes being announced from the ARIN address blocks:            61099
    Unique aggregates announced from the ARIN address blocks:     21894
ARIN Region origin ASes present in the Internet Routing Table:     9396
ARIN Region origin ASes announcing only one prefix:                3492
ARIN Region transit ASes present in the Internet Routing Table:     886
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          21
Number of ARIN addresses announced to Internet:               229050368
    Equivalent to 13 /8s, 167 /16s and 8 /24s
    Percentage of available ARIN address space announced:          65.0

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

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

Prefixes being announced by RIPE Region ASes:                     22768
    Total RIPE prefixes after maximum aggregation:                16764
Prefixes being announced from the RIPE address blocks:            19187
    Unique aggregates announced from the RIPE address blocks:     13327
RIPE Region origin ASes present in the Internet Routing Table:     5289
RIPE Region origin ASes announcing only one prefix:                2902
RIPE Region transit ASes present in the Internet Routing Table:     966
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          23
Number of RIPE addresses announced to Internet:               154207424
    Equivalent to 9 /8s, 49 /16s and 4 /24s
    Percentage of available RIPE address space announced:          54.1

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
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:                    8378
    Total LACNIC prefixes after maximum aggregation:               2926
Prefixes being announced from the LACNIC address blocks:           6986
    Unique aggregates announced from the LACNIC address blocks:    4018
LACNIC Region origin ASes present in the Internet Routing Table:    609
LACNIC Region origin ASes announcing only one prefix:               187
LACNIC Region transit ASes present in the Internet Routing Table:   111
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              18041856
    Equivalent to 1 /8s, 19 /16s and 76 /24s
    Percentage of available LACNIC address space announced:        53.8

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

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

Prefixes being announced by AfriNIC Region ASes:                   1087
    Total AfriNIC prefixes after maximum aggregation:               640
Prefixes being announced from the AfriNIC address blocks:           916
    Unique aggregates announced from the AfriNIC address blocks:    732
AfriNIC Region origin ASes present in the Internet Routing Table:    84
AfriNIC Region origin ASes announcing only one prefix:               29
AfriNIC Region transit ASes present in the Internet Routing Table:   13
Average AfriNIC Region AS path length visible:                      4.4
    Max AfriNIC Region AS path length visible:                       12
Number of AfriNIC addresses announced to Internet:              2198272
    Equivalent to 0 /8s, 33 /16s and 139 /24s
    Percentage of available AfriNIC address space announced:       13.1

AfriNIC AS Blocks      ERX transfers
AfriNIC Address Blocks 196/8

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 1221      781       1193         555   Telstra Pty Ltd
 9583      584         44          11   Sify Limited
 4755      488        211         112   Videsh Sanchar Nigam Ltd. Aut
 4134      430       1943         104   CHINANET-BACKBONE
 9443      370         77          76   Primus Telecommunications
 4766      366       1699         151   Korea Telecom (KIX)
 7545      365         54          66   TPG Internet Pty Ltd
 2907      348       1839         322   SINET Japan
17557      334         24         151   Pakistan Telecom
10036      308         28         281   C&M Communication Co. Ltd.
 7474      296        268         214   SingTel Optus Pty Ltd
 4802      282         47         166   Wantree Development
 9498      261         82          53   BHARTI BT INTERNET LTD.
 2764      251        238         200   AAPT Limited
  703      250        273         205   UUNET - Commercial IP service
 9929      246         94          19   China Netcom Corp.
 4808      231        168         129   CNCGROUP IP network: China169
18302      218         34         128   SK Global co., Ltd
17488      213         15          11   Hathway IP Over Cable Interne
17974      193         47          11   PT TELEKOMUNIKASI INDONESIA

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1408       6477         922   AT&T WorldNet Services
  174     1065       5544         905   Cogent Communications
  721     1019      15619         312   DLA Systems Automation Center
  701      966       8209         821   UUNET Technologies, Inc. 
 4323      961        635         212   Time Warner Telecom
 1239      874       2864         627   Sprint 
 6197      838        365         384   BellSouth Network Solutions, 
 2386      817        528         616   AT&T Data Communications Serv
18566      788        224           7   Covad Communications 
  209      624       3372         479   Qwest 
20115      599        495         310   Charter Communications 
  852      534       1069         393   Telus Advanced Communications
 3356      524      10745         394   Level 3 Communications, LLC 
 3602      507        119          92   Sprint Canada, Inc. 
 3561      506       2199         384   Savvis
27364      504         43          18   Armstrong Cable Services 
 5668      482        115          25   CenturyTel Internet Holdings,
22773      471       1180          20   Cox Communications, Inc.
 7132      427       8385         370   SBC Internet Services
 6198      419        372         193   BellSouth Network Solutions, 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      524       1674         447   UUNET - Commercial IP service
 3320      293       2057         229   Deutsche Telekom AG
 3301      286        902         276   TeliaNet Sweden
  680      252       2025         237   DFN-IP service G-WiN
 8220      239        309         235   COLT Telecommunications
 3246      206        388         201   Song Networks
 8708      194        243         177   Romania Data Systems S.A.
  786      174       1776         174   The JANET IP Service
 5515      174        743         124   Sonera Solution Autonomous Sy
 1257      172        587         163   SWIPnet Swedish IP Network
  719      153        288          96   LANLINK autonomous system
 3300      148        168          84   AUCS Communications Services 
 6746      139         44         121   Dynamic Network Technologies,
 3269      138       1273          58   TELECOM ITALIA
25186      136        137          94   France Telecom Transpac's Tra
 5400      126        236         112   BT Ignite European Backbone
 2856      115       1948         104   BTnet UK Regional network
 3215      114        963          68   France Telecom Transpac
 3303      106        471         101   Swisscom Ltd
 5511      106        157          76   France Telecom

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      349        527         145   UniNet S.A. de C.V. 
16814      266         16           7   NSS, S.A. 
11172      216         99          52   Servicios Alestra S.A de C.V 
 6147      204        100          22   Telefonica Del Peru 
19632      190         14           7   Metropolis Intercom S.A. 
 7303      156         68          25   Telecom Argentina Stet-France
11664      155         19          23   Keytech SA 
22047      122         96           6   VTR PUNTO NET S.A. 
 6503      106        146          75   AVANTEL, S.A. 
 6505      105         84          68   Global One Communicaoes Ltda 
13999      103         52           9   Mega Cable S.A. de C.V. 
18822      103          6          15   TELEFONICA MANQUEHUE 
11556       99         49           5   Cable-Wireless Panama 
19169       95          6          16   Telconet 
14117       86          6           3   Telefonica del Sur S.A. 
 5639       84         12           9   Telecommunications Services o
10481       82         32           7   Prima S.A. 
 4270       79         18           9   Red de Interconexion Universi
22927       79         65          20   TELEFONICA DE ARGENTINA 
23216       78         23          15   RAMtelecom Telecomunicaciones

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      268        635         225   The Internet Solution 
 2018       90        295          87   Tertiary Education Network 
 5536       85         13          16   Internet Egypt Network
 2905       67        264          61   The Internetworking Company o
 8452       54         16           3   TEDATA
24835       53         28           4   RAYA Telecom - Egypt
 5713       35        141          28   Telkom SA Ltd 
 6713       29         46           8   Itissalat Al-MAGHRIB
 9129       27          2           2   UUNET Kenya
12455       24          5           4   Jambonet Autonomous system
16637       22         10          19   Johnnic e-Ventures 
10798       19          1          11   Standard Bank of South Africa
 7460       17          3           4   LIA Internet Access 
12258       17          3          11   Vodacom Internet Company 
15808       16          1           1   Communication Solutions Ltd i
21491       14          1           1   UTL On-line is RF broadband I
17148       13          1           7   First National Bank 
11845       12          9          11   Data Pro Business Online 
17400       12          1           1   Pacomm-LDA 
21280       12          1           2   Swift Global Kenya Ltd.Is an 

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

  ASN   No of nets  Net Savings Description
    0         0       65531      *
18566       788         781      Covad Communications 
 4323       961         749      Time Warner Telecom
  721      1019         707      DLA Systems Automation Center
 9583       584         573      Sify Limited
27364       504         486      Armstrong Cable Services 
 5668       482         457      CenturyTel Internet Holdings,
 6197       838         454      BellSouth Network Solutions, 
22773       471         451      Cox Communications, Inc.
 3602       507         415      Sprint Canada, Inc. 
 4755       488         376      Videsh Sanchar Nigam Ltd. Aut
 4134       430         326      CHINANET-BACKBONE
 6140       395         324      ImpSat
 6467       345         313      E.Spire Communications, Inc. 
 7545       365         299      TPG Internet Pty Ltd
 9443       370         294      Primus Telecommunications
20115       599         289      Charter Communications 
 6478       378         288      AT&T Worldnet Services 
  376       391         276      Reseau Interordinateurs Scien
16814       266         259      NSS, S.A. 

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

Bad AS  Designation  Network              Transit AS  Description
35864   UNALLOCATED   38.117.202.0/24        174       Cogent Communication
35884   UNALLOCATED   38.118.171.0/24      10912       InterNAP Network Ser
35894   UNALLOCATED   63.118.207.0/24       6128       Cablevision Systems 
35884   UNALLOCATED   64.74.164.0/24       10912       InterNAP Network Ser
35884   UNALLOCATED   64.74.165.0/24       10912       InterNAP Network Ser
35884   UNALLOCATED   64.74.166.0/24       10912       InterNAP Network Ser
35892   UNALLOCATED   64.124.52.0/24        6461       AboveNet Communicati
35892   UNALLOCATED   64.125.105.0/24       6461       AboveNet Communicati
35892   UNALLOCATED   64.125.106.0/24       6461       AboveNet Communicati
35892   UNALLOCATED   64.125.110.0/24       6461       AboveNet Communicati
35890   UNALLOCATED   64.193.55.0/24         209       Qwest 
35868   UNALLOCATED   65.88.163.192/26      6395       Broadwing Communicat
35871   UNALLOCATED   66.7.178.0/23         6517       Yipes Communications
35868   UNALLOCATED   68.143.179.64/26      6395       Broadwing Communicat
33507   UNALLOCATED   70.183.41.0/24       15218       COX Communications 
35895   UNALLOCATED   72.5.143.0/24        10910       InterNAP Network Ser
64500   RESERVED      85.114.96.0/21        1680       NetVision Ltd.
65503   PRIVATE       193.125.183.0/24      3217       SIMBIRSK
35857   UNALLOCATED   199.107.188.0/24      4323       Time Warner Telecom
65004   PRIVATE       200.0.113.0/24       28477       Universidad Autonoma
65004   PRIVATE       200.4.0.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.1.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.2.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.3.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.4.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.5.0/24         28477       Universidad Autonoma
65004   PRIVATE       200.4.6.0/24         28477       Universidad Autonoma
35875   UNALLOCATED   204.117.76.0/24       1239       Sprint 
35892   UNALLOCATED   208.184.1.0/24        6461       AboveNet Communicati
35850   UNALLOCATED   209.139.6.0/24        3356       Level 3 Communicatio
35850   UNALLOCATED   209.139.22.0/23       3356       Level 3 Communicatio
35850   UNALLOCATED   209.139.56.0/22       3356       Level 3 Communicatio
35850   UNALLOCATED   209.139.108.0/23      3356       Level 3 Communicatio
35850   UNALLOCATED   209.139.110.0/24      3356       Level 3 Communicatio
35850   UNALLOCATED   209.139.180.0/24      3356       Level 3 Communicatio
35892   UNALLOCATED   209.249.93.0/24       6461       AboveNet Communicati
35892   UNALLOCATED   209.249.94.0/24       6461       AboveNet Communicati
35892   UNALLOCATED   209.249.95.0/24       6461       AboveNet Communicati

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
172.32.0.0/24         7011     Citizens Utilities 
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 
192.84.205.0/24        719     LANLINK autonomous system
192.119.135.0/24       270     NASA 
192.135.50.0/24       7018     AT&T WorldNet Services
192.172.0.0/19         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        /8:17       /9:2       /10:8       /11:13      /12:60      
/13:127     /14:260     /15:472     /16:7497    /17:2028    /18:3414    
/19:7717    /20:8814    /21:7649    /22:10537   /23:11751   /24:78503   
/25:252     /26:228     /27:130     /28:68      /29:37      /30:61      
/31:0       /32:29      

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

  ASN   No of nets  Total ann.   Description
18566      772           788      Covad Communications 
 6197      683           838      BellSouth Network Solutions, 
 7018      610          1408      AT&T WorldNet Services
 2386      572           817      AT&T Data Communications Serv
27364      491           504      Armstrong Cable Services 
 9583      406           584      Sify Limited
 4323      402           961      Time Warner Telecom
 5668      402           482      CenturyTel Internet Holdings,
 1239      348           874      Sprint 
  702      327           524      UUNET - Commercial IP service
10036      308           308      C&M Communication Co. Ltd.
 6198      300           419      BellSouth Network Solutions, 
 6517      288           311      Yipes Communications, Inc. 
 7011      270           318      Citizens Utilities 
15270      251           269      PaeTec.net -a division of Pae
 3320      245           293      Deutsche Telekom AG
20115      244           599      Charter Communications 
23126      239           250      KMC Telecom, Inc 
22773      236           471      Cox Communications, Inc.
11456      228           268      Carolina Online, Inc. 

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

   4:4         8:11       10:6        12:1516     13:1        15:9      
  16:2        17:3        18:4        20:4        24:794      28:2      
  31:1        32:64       33:4        38:104      40:53       44:7      
  47:2        50:1        52:11       54:1        55:3        56:3      
  57:23       58:37       59:22       60:17       61:738      62:574    
  63:1879     64:2648     65:2079     66:2734     67:519      68:508    
  69:961      70:83       71:6        72:128      80:535      81:528    
  82:369      83:225      84:137      85:160     128:141     129:160    
 130:89      131:281     132:33      133:1       134:145     135:41     
 136:191     137:67      138:164     139:56      140:193     141:103    
 142:137     143:130     144:172     145:32      146:272     147:102    
 148:293     149:169     150:97      151:63      152:107     153:87     
 154:4       155:144     156:69      157:89      158:167     159:172    
 160:73      161:60      162:199     163:83      164:203     165:159    
 166:154     167:228     168:416     169:137     170:311     171:8      
 172:1       192:5674    193:3146    194:2326    195:1536    196:638    
 198:3934    199:3268    200:4010    201:113     202:5443    203:6136   
 204:3818    205:2006    206:2439    207:2731    208:2075    209:3278   
 210:1675    211:759    

End of report


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