[afnog] Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Fri Apr 29 21:07:16 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 30 Apr, 2005

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

BGP routing table entries examined:                              160965
    Prefixes after maximum aggregation:                           93728
    Unique aggregates announced to Internet:                      77542
Total ASes present in the Internet Routing Table:                 19534
Origin-only ASes present in the Internet Routing Table:           16995
Origin ASes announcing only one prefix:                            7966
Transit ASes present in the Internet Routing Table:                2539
Transit-only ASes present in the Internet Routing Table:             70
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      25
Prefixes from unregistered ASNs in the Routing Table:                13
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             14
Number of addresses announced to Internet:                   1402418240
    Equivalent to 83 /8s, 151 /16s and 52 /24s
    Percentage of available address space announced:               37.8
    Percentage of allocated address space announced:               59.4
    Percentage of available address space allocated:               63.7
Total number of prefixes smaller than registry allocations:       75387

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

Prefixes being announced by APNIC Region ASes:                    32925
    Total APNIC prefixes after maximum aggregation:               15505
Prefixes being announced from the APNIC address blocks:           30870
    Unique aggregates announced from the APNIC address blocks:    15608
APNIC Region origin ASes present in the Internet Routing Table:    2252
APNIC Region origin ASes announcing only one prefix:                660
APNIC Region transit ASes present in the Internet Routing Table:    342
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              181904768
    Equivalent to 10 /8s, 215 /16s and 165 /24s
    Percentage of available APNIC address space announced:         67.5

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:                     87447
    Total ARIN prefixes after maximum aggregation:                53329
Prefixes being announced from the ARIN address blocks:            68203
    Unique aggregates announced from the ARIN address blocks:     25071
ARIN Region origin ASes present in the Internet Routing Table:     9901
ARIN Region origin ASes announcing only one prefix:                3600
ARIN Region transit ASes present in the Internet Routing Table:     934
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          21
Number of ARIN addresses announced to Internet:               247404544
    Equivalent to 14 /8s, 191 /16s and 24 /24s
    Percentage of available ARIN address space announced:          70.2

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, 198/7, 204/6,
                       208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                     30604
    Total RIPE prefixes after maximum aggregation:                21151
Prefixes being announced from the RIPE address blocks:            27631
    Unique aggregates announced from the RIPE address blocks:     18416
RIPE Region origin ASes present in the Internet Routing Table:     6602
RIPE Region origin ASes announcing only one prefix:                3486
RIPE Region transit ASes present in the Internet Routing Table:    1104
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          25
Number of RIPE addresses announced to Internet:               202156992
    Equivalent to 12 /8s, 12 /16s and 171 /24s
    Percentage of available RIPE address space announced:          70.9

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:                    8530
    Total LACNIC prefixes after maximum aggregation:               3037
Prefixes being announced from the LACNIC address blocks:           6932
    Unique aggregates announced from the LACNIC address blocks:    4046
LACNIC Region origin ASes present in the Internet Routing Table:    612
LACNIC Region origin ASes announcing only one prefix:               193
LACNIC Region transit ASes present in the Internet Routing Table:   111
Average LACNIC Region AS path length visible:                       5.2
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              18459136
    Equivalent to 1 /8s, 25 /16s and 170 /24s
    Percentage of available LACNIC address space announced:        55.0

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

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

Prefixes being announced by AfriNIC Region ASes:                   1441
    Total AfriNIC prefixes after maximum aggregation:               706
Prefixes being announced from the AfriNIC address blocks:           943
    Unique aggregates announced from the AfriNIC address blocks:    749
AfriNIC Region origin ASes present in the Internet Routing Table:   100
AfriNIC Region origin ASes announcing only one prefix:               27
AfriNIC Region transit ASes present in the Internet Routing Table:   14
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       13
Number of AfriNIC addresses announced to Internet:              2224640
    Equivalent to 0 /8s, 33 /16s and 242 /24s
    Percentage of available AfriNIC address space announced:        6.6

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      898       5035         183   CHINANET-BACKBONE
 1221      773       1192         550   Telstra Pty Ltd
 9583      729         53          71   Sify Limited
 4766      585       3413         276   Korea Telecom (KIX)
 4755      581        245         126   Videsh Sanchar Nigam Ltd. Aut
 7545      492         86          71   TPG Internet Pty Ltd
17676      431       6509          73   Softbank BB Corp.
 9443      370         77          76   Primus Telecommunications
 9929      361        197          46   China Netcom Corp.
 2907      345       1838         319   SINET Japan
17557      315         26         149   Pakistan Telecom
10036      313         28         284   C&M Communication Co. Ltd.
 4808      309        251         169   CNCGROUP IP network: China169
 7474      299        268         208   SingTel Optus Pty Ltd
 9498      287         82          55   BHARTI BT INTERNET LTD.
 4802      279         47         164   Wantree Development
 2764      258        238         197   AAPT Limited
  703      256        279         211   UUNET - Commercial IP service
17974      244         65          14   PT TELEKOMUNIKASI INDONESIA
 9800      242        386          69   CHINA UNICOM

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1488       6500         957   AT&T WorldNet Services
  174     1177       5607        1008   Cogent Communications
  721     1116      21763         314   DLA Systems Automation Center
 4323     1108        665         225   Time Warner Telecom
  701     1007       8282         857   UUNET Technologies, Inc. 
 1239      910       2874         659   Sprint 
 6197      895        381         415   BellSouth Network Solutions, 
 2386      847        532         628   AT&T Data Communications Serv
18566      801        224           7   Covad Communications 
  209      653       3460         494   Qwest 
20115      609        505         307   Charter Communications 
 3356      582      10836         437   Level 3 Communications, LLC 
 3561      541       2365         414   Savvis
27364      539         43          18   Armstrong Cable Services 
  852      530       1095         393   Telus Advanced Communications
 3602      506        122          94   Sprint Canada, Inc. 
 5668      487        115          25   CenturyTel Internet Holdings,
22773      481       1188          21   Cox Communications, Inc.
 6198      469        542         202   BellSouth Network Solutions, 
 7132      443       8782         380   SBC Internet Services

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      595       2003         487   UUNET - Commercial IP service
 3320      302       2993         236   Deutsche Telekom AG
 3301      297       1116         287   TeliaNet Sweden
 8220      274        469         268   COLT Telecommunications
  680      253       2041         238   DFN-IP service G-WiN
 3246      233        491         228   Song Networks
 8708      228        251         209   Romania Data Systems S.A.
 1257      199        727         175   SWIPnet Swedish IP Network
 5515      178        778         128   Sonera Solution Autonomous Sy
  786      176       1794         176   The JANET IP Service
 3269      167       1472          73   TELECOM ITALIA
 6746      164         47         143   Dynamic Network Technologies,
 8866      162         21          12   Bulgarian Telecommunication C
  719      159        340         101   LANLINK autonomous system
 3300      151        184          84   AUCS Communications Services 
 5400      144        284         128   BT Ignite European Backbone
25186      139        137          97   France Telecom Transpac's Tra
 6830      137        513          27   UPC Distribution Services
 2856      129       2305         116   BTnet UK Regional network
 9051      128          8          34   INCONET Autonomous System

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      373        598         147   UniNet S.A. de C.V. 
16814      266         16           7   NSS, S.A. 
11172      223         99          54   Servicios Alestra S.A de C.V 
 6147      197        102          20   Telefonica Del Peru 
11664      155         19          22   Keytech SA 
 7303      147         68          21   Telecom Argentina Stet-France
14117      135          8           4   Telefonica del Sur S.A. 
 6505      130         90          87   Global One Communicaoes Ltda 
22047      124         96           6   VTR PUNTO NET S.A. 
11556      110         55           6   Cable-Wireless Panama 
13999      110         52           9   Mega Cable S.A. de C.V. 
18822      105          7          15   TELEFONICA MANQUEHUE 
 6503      104        146          74   AVANTEL, S.A. 
10481      101         40           7   Prima S.A. 
19169       89          6          26   Telconet 
21826       89         12          18   INTERCABLE 
23216       89         24          22   RAMtelecom Telecomunicaciones
11311       85          8          21   Sinectis S.A. 
 5639       84         12           9   Telecommunications Services o
19632       81         14           7   Metropolis Intercom S.A. 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      270        637         225   The Internet Solution 
 5536      119         15          17   Internet Egypt Network
 2018       90        295          87   Tertiary Education Network 
20928       90         16           2   Noor Advanced Technologies AS
 2905       75        267          69   The Internetworking Company o
 8452       64         20           5   TEDATA
24835       60         34           6   RAYA Telecom - Egypt
 9129       44          3           3   UUNET Kenya
12455       42          6           4   Jambonet Autonomous system
 5713       35        141          28   Telkom SA Ltd 
 6713       35         54           9   Itissalat Al-MAGHRIB
 8524       25          1           4   AUCEGYPT Autonomous System
15475       24         84           4   Nile Online
16637       22         10          19   Johnnic e-Ventures 
10798       19          1          11   Standard Bank of South Africa
 7460       18          3           5   LIA Internet Access 
 2609       17         26           3   Tunisia BackBone AS
12258       17          3          11   Vodacom Internet Company 
21280       17          2           3   Swift Global Kenya Ltd.Is an 
15808       16          1           1   Communication Solutions Ltd i

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

  ASN   No of nets  Net Savings Description
    0         0       65530      *
 4323      1108         883      Time Warner Telecom
  721      1116         802      DLA Systems Automation Center
18566       801         794      Covad Communications 
 4134       898         715      CHINANET-BACKBONE
 9583       729         658      Sify Limited
27364       539         521      Armstrong Cable Services 
 6197       895         480      BellSouth Network Solutions, 
 5668       487         462      CenturyTel Internet Holdings,
22773       481         460      Cox Communications, Inc.
 4755       581         455      Videsh Sanchar Nigam Ltd. Aut
 7545       492         421      TPG Internet Pty Ltd
 3602       506         412      Sprint Canada, Inc. 
 6467       434         399      E.Spire Communications, Inc. 
17676       431         358      Softbank BB Corp.
 6140       399         327      ImpSat
 9929       361         315      China Netcom Corp.
 4766       585         309      Korea Telecom (KIX)
20115       609         302      Charter Communications 
 9443       370         294      Primus Telecommunications

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

Bad AS  Designation  Network              Transit AS  Description
30999   UNALLOCATED   196.192.80.0/24       6774       BELGACOM
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
65005   PRIVATE       203.200.197.0/24      4755       Videsh Sanchar Nigam
65444   PRIVATE       212.25.125.0/24       8551       Bezeq International
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
172.32.0.0/24         7011     Citizens Utilities 
172.122.28.0/24        210     Utah Education Network 
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        /8:19       /9:3       /10:8       /11:15      /12:68      
/13:153     /14:307     /15:583     /16:8373    /17:2530    /18:4362    
/19:10244   /20:11065   /21:8919    /22:12310   /23:13273   /24:87830   
/25:280     /26:269     /27:142     /28:75      /29:38      /30:70      
/31:0       /32:29      

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

  ASN   No of nets  Total ann.   Description
18566      785           801      Covad Communications 
 6197      734           895      BellSouth Network Solutions, 
 7018      673          1488      AT&T WorldNet Services
 2386      601           847      AT&T Data Communications Serv
 9583      545           729      Sify Limited
27364      528           539      Armstrong Cable Services 
 4323      520          1108      Time Warner Telecom
 5668      404           487      CenturyTel Internet Holdings,
 4766      402           585      Korea Telecom (KIX)
 1239      382           910      Sprint 
  702      367           595      UUNET - Commercial IP service
 6198      339           469      BellSouth Network Solutions, 
 6467      313           434      E.Spire Communications, Inc. 
10036      313           313      C&M Communication Co. Ltd.
 6517      296           319      Yipes Communications, Inc. 
 7011      296           346      Citizens Utilities 
 9929      282           361      China Netcom Corp.
11456      276           318      Carolina Online, Inc. 
15270      258           278      PaeTec.net -a division of Pae
  174      249          1177      Cogent Communications

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

   4:4         8:12       12:1529     13:1        15:9        16:2      
  17:3        18:4        20:4        24:978      30:2        32:69     
  33:4        38:109      40:53       44:3        47:2        52:4      
  55:2        56:3        57:24       58:42       59:28       60:22     
  61:784      62:595      63:1878     64:2687     65:2066     66:2795   
  67:563      68:521      69:994      70:94       71:6        72:165    
  80:555      81:546      82:396      83:244      84:162      85:180    
  86:6       128:148     129:158     130:84      131:279     132:36     
 133:1       134:148     135:40      136:191     137:65      138:171    
 139:55      140:191     141:106     142:142     143:134     144:167    
 145:33      146:280     147:104     148:296     149:169     150:97     
 151:65      152:107     153:87      154:5       155:143     156:77     
 157:92      158:167     159:173     160:77      161:61      162:203    
 163:83      164:207     165:178     166:155     167:231     168:417    
 169:140     170:315     171:8       172:2       192:5701    193:3177   
 194:2341    195:1548    196:652     198:3937    199:3287    200:3851   
 201:113     202:5528    203:6129    204:3820    205:2015    206:2471   
 207:2761    208:2060    209:3268    210:1695    211:840     212:1191   
 213:1284    214:275     215:32      216:3513    217:1139    218:192    
 219:105     220:373     221:203     222:91     

End of report



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