[afnog] Weekly Routing Table Report

Routing Table Analysis cscora at apnic.net
Fri Apr 7 21:07:02 EAT 2006


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 08 Apr, 2006

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

BGP routing table entries examined:                              187421
    Prefixes after maximum aggregation:                          102941
    Unique aggregates announced to Internet:                      90857
Total ASes present in the Internet Routing Table:                 21897
Origin-only ASes present in the Internet Routing Table:           19024
Origin ASes announcing only one prefix:                            9061
Transit ASes present in the Internet Routing Table:                2873
Transit-only ASes present in the Internet Routing Table:             69
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      24
Prefixes from unregistered ASNs in the Routing Table:                 7
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             10
Number of addresses announced to Internet:                   1502183520
    Equivalent to 89 /8s, 137 /16s and 128 /24s
    Percentage of available address space announced:               40.5
    Percentage of allocated address space announced:               59.8
    Percentage of available address space allocated:               67.8
Total number of prefixes smaller than registry allocations:       92822

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

Prefixes being announced by APNIC Region ASes:                    39029
    Total APNIC prefixes after maximum aggregation:               16361
Prefixes being announced from the APNIC address blocks:           36722
    Unique aggregates announced from the APNIC address blocks:    18056
APNIC Region origin ASes present in the Internet Routing Table:    2535
APNIC Region origin ASes announcing only one prefix:                719
APNIC Region transit ASes present in the Internet Routing Table:    387
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              221179616
    Equivalent to 13 /8s, 46 /16s and 238 /24s
    Percentage of available APNIC address space announced:         69.2

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911
APNIC Address Blocks   58/7, 60/7, 121/8, 122/7, 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:                     97090
    Total ARIN prefixes after maximum aggregation:                57356
Prefixes being announced from the ARIN address blocks:            76154
    Unique aggregates announced from the ARIN address blocks:     29160
ARIN Region origin ASes present in the Internet Routing Table:    10619
ARIN Region origin ASes announcing only one prefix:                3973
ARIN Region transit ASes present in the Internet Routing Table:     982
Average ARIN Region AS path length visible:                         4.3
    Max ARIN Region AS path length visible:                          19
Number of ARIN addresses announced to Internet:               293939456
    Equivalent to 17 /8s, 133 /16s and 41 /24s
    Percentage of available ARIN address space announced:          73.0

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
                       35840-36863
ARIN Address Blocks    24/8, 63/8, 64/6, 68/7, 70/6, 74/7, 76/8,
                       198/7, 204/6, 208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                     36920
    Total RIPE prefixes after maximum aggregation:                24732
Prefixes being announced from the RIPE address blocks:            33967
    Unique aggregates announced from the RIPE address blocks:     22985
RIPE Region origin ASes present in the Internet Routing Table:     7844
RIPE Region origin ASes announcing only one prefix:                4098
RIPE Region transit ASes present in the Internet Routing Table:    1308
Average RIPE Region AS path length visible:                         5.0
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               243229824
    Equivalent to 14 /8s, 127 /16s and 100 /24s
    Percentage of available RIPE address space announced:          72.5

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, 38912-39935
RIPE Address Blocks    62/8, 80/5, 88/6, 188/8, 193/8, 194/7, 212/7
                       and 217/8

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

Prefixes being announced by LACNIC Region ASes:                   12256
    Total LACNIC prefixes after maximum aggregation:               3605
Prefixes being announced from the LACNIC address blocks:          10399
    Unique aggregates announced from the LACNIC address blocks:    5305
LACNIC Region origin ASes present in the Internet Routing Table:    683
LACNIC Region origin ASes announcing only one prefix:               226
LACNIC Region transit ASes present in the Internet Routing Table:   128
Average LACNIC Region AS path length visible:                       5.1
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC addresses announced to Internet:              26375936
    Equivalent to 1 /8s, 146 /16s and 119 /24s
    Percentage of available LACNIC address space announced:        39.3

LACNIC AS Blocks       26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks  189/8, 190/8, 200/7

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

Prefixes being announced by AfriNIC Region ASes:                   2116
    Total AfriNIC prefixes after maximum aggregation:               887
Prefixes being announced from the AfriNIC address blocks:          1455
    Unique aggregates announced from the AfriNIC address blocks:    920
AfriNIC Region origin ASes present in the Internet Routing Table:   150
AfriNIC Region origin ASes announcing only one prefix:               45
AfriNIC Region transit ASes present in the Internet Routing Table:   25
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:              4033536
    Equivalent to 0 /8s, 61 /16s and 140 /24s
    Percentage of available AfriNIC address space announced:       12.0

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     1010       6915         207   CHINANET-BACKBONE
 4755      896        258          68   Videsh Sanchar Nigam Ltd. Aut
 9583      874        109          16   Sify Limited
 4766      680       3924         305   Korea Telecom (KIX)
 1221      622       1557         476   Telstra Pty Ltd
 9498      565        212          72   BHARTI BT INTERNET LTD.
 7545      529        108          71   TPG Internet Pty Ltd
17488      501         31           7   Hathway IP Over Cable Interne
17676      484       6997         107   Softbank BB Corp.
 9443      421         95          82   Primus Telecommunications
 4802      378         77         172   Wantree Development
 2907      336       1749         312   SINET Japan
18101      336         69          25   Reliance Infocom Ltd Internet
17974      325        118          25   PT TELEKOMUNIKASI INDONESIA
17849      323         21         106   Telecommunications Technology
17557      322         27         165   Pakistan Telecom
 9929      317        220          55   China Netcom Corp.
 7474      299        211         230   SingTel Optus Pty Ltd
 9800      268        410          67   CHINA UNICOM
 9837      268         77         164   Powertel Ltd

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1510       6258         968   AT&T WorldNet Services
 4323     1253        716         250   Time Warner Telecom
  721     1017      21962         307   DLA Systems Automation Center
 6197     1010        615         471   BellSouth Network Solutions, 
  174      955       5783         901   Cogent Communications
  701      934       8047         774   UUNET Technologies, Inc. 
18566      928        272           8   Covad Communications 
 2386      874        537         666   AT&T Data Communications Serv
 1239      851       2796         605   Sprint 
19029      781        151         109   New Edge Networks 
  209      715       3616         560   Qwest 
20115      674        591         362   Charter Communications 
19262      669       1977         156   Verizon Global Networks 
22773      642       1484          41   Cox Communications, Inc.
11492      627         86          20   Cable One 
 7011      623        213         404   Citizens Utilities 
 6198      588        530         236   BellSouth Network Solutions, 
  852      586       1089         388   Telus Advanced Communications
19916      563         49          54   OLM LLC 
  855      552        244          64   Canadian Research Network 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
  702      584       1951         457   UUNET - Commercial IP service
 3301      308       1071         292   TeliaNet Sweden
 3352      308       1580          31   Ibernet, Internet Access Netw
 8220      288        473         267   COLT Telecommunications
 3320      282       3476         234   Deutsche Telekom AG
  680      245       2025         242   DFN-IP service G-WiN
 3246      231        488         221   Song Networks
 6746      227         89         201   Dynamic Network Technologies,
 8708      215        275         200   Romania Data Systems S.A.
 8551      202        198          24   Bezeq International
24863      200         40           9   LINKdotNET AS number
 1257      198        711         173   SWIPnet Swedish IP Network
 3269      197       2086          76   TELECOM ITALIA
 3215      191       1598          89   France Telecom Transpac
 8866      175         37          15   Bulgarian Telecommunication C
  786      171       1778         171   The JANET IP Service
 5400      169        329         138   BT Ignite European Backbone
 9121      168        931          27   TTnet Autonomous System
 6830      167        765          35   UPC Distribution Services
 5515      161        839         120   Sonera Solution Autonomous Sy

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     2177       1104         234   UniNet S.A. de C.V. 
22047      383        142          10   VTR PUNTO NET S.A. 
11172      321        110          84   Servicios Alestra S.A de C.V 
16814      276         18           7   NSS, S.A. 
14117      189         12           6   Telefonica del Sur S.A. 
10481      181         72           8   Prima S.A. 
 7303      159         75          20   Telecom Argentina Stet-France
 6147      154        126          22   Telefonica Del Peru 
11556      132         80           4   Cable-Wireless Panama 
 5639      128         12           9   Telecommunications Services o
19169      124          8          30   Telconet 
21826      124         16          21   INTERCABLE 
 6503      123        149          75   AVANTEL, S.A. 
14259      114         10          12   GTD Internet S.A. 
18822      114          8          10   TELEFONICA MANQUEHUE 
 6505      106         88          78   Global One Communicaoes Ltda 
23216      102         21           9   RAMtelecom Telecomunicaciones
 7315       96          6           3   Grupo Rey Moreno 
25620       96          6           3   COTAS LTDA 
14522       94         13           5   SatNet S.A. 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      277        803         232   The Internet Solution 
 8452      166         60           7   TEDATA
 6713      145        135          11   Itissalat Al-MAGHRIB
15475      129         84           4   Nile Online
 2018      124        314         105   Tertiary Education Network 
 5536      121          8          18   Internet Egypt Network
24835      114         50           7   RAYA Telecom - Egypt
 2905       74        155          67   The Internetworking Company o
20928       57         16           2   Noor Advanced Technologies AS
12455       44          6           3   Jambonet Autonomous system
 5713       39        294          35   Telkom SA Ltd 
15706       31          8           3   Sudatel Internet Exchange Aut
33774       30          7          21   AS Number for Telecom Algeria
23889       26          8          11   MAURITIUS TELECOM
 8524       24          1           4   AUCEGYPT Autonomous System
16637       24         14          22   Johnnic e-Ventures 
10798       22          1          13   Standard Bank of South Africa
 8346       20         13          17   SONATEL-AS Autonomous System
 2561       19          6           2   Egyptian Universities Network
21280       19          5           5   Swift Global Kenya Ltd.Is an 

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

  ASN   No of nets  Net Savings Description
 4323      1253        1003      Time Warner Telecom
18566       928         920      Covad Communications 
 9583       874         858      Sify Limited
 4755       896         828      Videsh Sanchar Nigam Ltd. Aut
 4134      1010         803      CHINANET-BACKBONE
  721      1017         710      DLA Systems Automation Center
19029       781         672      New Edge Networks 
11492       627         607      Cable One 
22773       642         601      Cox Communications, Inc.
 7018      1510         542      AT&T WorldNet Services
 6197      1010         539      BellSouth Network Solutions, 
19262       669         513      Verizon Global Networks 
19916       563         509      OLM LLC 
 5668       532         502      CenturyTel Internet Holdings,
17488       501         494      Hathway IP Over Cable Interne
 9498       565         493      BHARTI BT INTERNET LTD.
  855       552         488      Canadian Research Network 
 7545       529         458      TPG Internet Pty Ltd
 7757       476         457      AT&T Broadband 
 3602       539         430      Sprint Canada, Inc. 

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

Bad AS  Designation  Network              Transit AS  Description
43144   UNALLOCATED   12.149.157.0/24       7018       AT&T WorldNet Servic
65289   PRIVATE       148.164.1.0/24        4755       Videsh Sanchar Nigam
65005   PRIVATE       159.153.148.0/22     24989       IX Europe Frankfurt 
24409   UNALLOCATED   203.119.29.0/24       9808       Guangdong Mobile Com
24808   UNALLOCATED   217.78.74.0/23       12491       IPPlanet
24808   UNALLOCATED   217.78.76.0/23       12491       IPPlanet
65412   PRIVATE       221.123.128.0/20     24405       Beijing CJWX Communi

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
183.206.196.0/24      2188     FR-RENATER-ASTER
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 
192.172.0.0/19         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        /8:17       /9:9       /10:8       /11:27      /12:88      
/13:200     /14:357     /15:693     /16:8776    /17:3165    /18:5210    
/19:11484   /20:12931   /21:11158   /22:14333   /23:15446   /24:102489  
/25:367     /26:251     /27:219     /28:64      /29:62      /30:34      
/31:0       /32:33      

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

  ASN   No of nets  Total ann.   Description
 8151     1782          2177      UniNet S.A. de C.V. 
18566      911           928      Covad Communications 
 7018      800          1510      AT&T WorldNet Services
 6197      799          1010      BellSouth Network Solutions, 
19029      713           781      New Edge Networks 
 9583      695           874      Sify Limited
11492      618           627      Cable One 
 4323      604          1253      Time Warner Telecom
 2386      594           874      AT&T Data Communications Serv
19916      557           563      OLM LLC 
 7011      535           623      Citizens Utilities 
 4766      489           680      Korea Telecom (KIX)
 7757      458           476      AT&T Broadband 
 6198      441           588      BellSouth Network Solutions, 
  855      426           552      Canadian Research Network 
 5668      412           532      CenturyTel Internet Holdings,
 1239      376           851      Sprint 
15270      368           399      PaeTec.net -a division of Pae
  702      365           584      UUNET - Commercial IP service
 6517      349           377      Yipes Communications, Inc. 

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

   4:3         8:44       12:1621     13:1        15:12       16:3      
  17:3        18:4        20:43       24:883      25:1        30:2      
  32:68       38:209      40:54       44:3        45:5        47:6      
  52:4        55:1        56:3        57:33       58:150      59:194    
  60:178      61:841      62:826      63:1903     64:3124     65:2226   
  66:3071     67:616      68:685      69:1466     70:319      71:75     
  72:673      73:23       74:29       80:756      81:611      82:560    
  83:386      84:379      85:509      86:340      87:297      88:56     
  89:126     124:211     125:300     128:166     129:177     130:107    
 131:317     132:32      133:8       134:150     135:47      136:174    
 137:71      138:198     139:67      140:468     141:134     142:394    
 143:161     144:229     145:41      146:324     147:133     148:347    
 149:189     150:114     151:80      152:64      153:107     154:6      
 155:195     156:100     157:125     158:165     159:171     160:85     
 161:69      162:251     163:145     164:179     165:184     166:165    
 167:241     168:480     169:134     170:329     171:12      172:1      
 183:1       190:51      192:5772    193:3395    194:2569    195:1794   
 196:856     198:3879    199:3266    200:4304    201:2236    202:6539   
 203:6891    204:3961    205:2101    206:2420    207:2932    208:2029   
 209:3726    210:1912    211:704     212:1228    213:1447    214:334    
 215:41      216:4099    217:1166    218:242     219:170     220:647    
 221:353     222:152    

End of report



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