[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 17 18:03:10 UTC 2007


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

For historical data, please see http://thyme.apnic.net.

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

Routing Table Report   04:00 +10GMT Sat 18 Aug, 2007

Report Website: http://thyme.apnic.net
This report:    http://thyme.apnic.net/ap-data/2007/08/18/0400

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

BGP routing table entries examined:                              228981
    Prefixes after maximum aggregation:                          120023
    Deaggregation factor:                                          1.91
    Unique aggregates announced to Internet:                     111293
Total ASes present in the Internet Routing Table:                 25995
    Prefixes per ASN:                                              8.81
Origin-only ASes present in the Internet Routing Table:           22636
Origin ASes announcing only one prefix:                           11060
Transit ASes present in the Internet Routing Table:                3359
Transit-only ASes present in the Internet Routing Table:             75
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      21
    Max AS path prepend of ASN (35389)                               16
Prefixes from unregistered ASNs in the Routing Table:                 7
    Unregistered ASNs in the Routing Table:                           3
Prefixes from 32-bit ASNs in the Routing Table:                       5
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:             11
Number of addresses announced to Internet:                   1751698656
    Equivalent to 104 /8s, 104 /16s and 204 /24s
    Percentage of available address space announced:               47.3
    Percentage of allocated address space announced:               61.9
    Percentage of available address space allocated:               76.4
Total number of prefixes smaller than registry allocations:      121285

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

Prefixes being announced by APNIC Region ASes:                    53554
    Total APNIC prefixes after maximum aggregation:               20814
    APNIC Deaggregation factor:                                    2.57
Prefixes being announced from the APNIC address blocks:           50491
    Unique aggregates announced from the APNIC address blocks:    22248
APNIC Region origin ASes present in the Internet Routing Table:    3037
    APNIC Prefixes per ASN:                                       16.63
APNIC Region origin ASes announcing only one prefix:                820
APNIC Region transit ASes present in the Internet Routing Table:    463
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              311783328
    Equivalent to 18 /8s, 149 /16s and 111 /24s
    Percentage of available APNIC address space announced:         77.2

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, 116/6, 120/6, 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:                    108312
    Total ARIN prefixes after maximum aggregation:                62746
    ARIN Deaggregation factor:                                     1.73
Prefixes being announced from the ARIN address blocks:            79754
    Unique aggregates announced from the ARIN address blocks:     31860
ARIN Region origin ASes present in the Internet Routing Table:    11765
    ARIN Prefixes per ASN:                                         6.78
ARIN Region origin ASes announcing only one prefix:                4536
ARIN Region transit ASes present in the Internet Routing Table:    1081
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               342081536
    Equivalent to 20 /8s, 99 /16s and 192 /24s
    Percentage of available ARIN address space announced:          75.5

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, 39936-40959
ARIN Address Blocks    24/8, 63/8, 64/5, 72/6, 76/8, 96/6, 199/8, 204/6,
                       208/7 and 216/8

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

Prefixes being announced by RIPE Region ASes:                     48172
    Total RIPE prefixes after maximum aggregation:                31027
    RIPE Deaggregation factor:                                     1.55
Prefixes being announced from the RIPE address blocks:            44558
    Unique aggregates announced from the RIPE address blocks:     29275
RIPE Region origin ASes present in the Internet Routing Table:    10066
    RIPE Prefixes per ASN:                                         4.43
RIPE Region origin ASes announcing only one prefix:                5360
RIPE Region transit ASes present in the Internet Routing Table:    1602
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               323968640
    Equivalent to 19 /8s, 79 /16s and 94 /24s
    Percentage of available RIPE address space announced:          74.3

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
                       40960-44031
RIPE Address Blocks    62/8, 77/8, 78/7, 80/4, 193/8, 194/7, 212/7
                       and 217/8

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

Prefixes being announced by LACNIC Region ASes:                   16210
    Total LACNIC prefixes after maximum aggregation:               4384
    LACNIC Deaggregation factor:                                   3.70
Prefixes being announced from the LACNIC address blocks:          14309
    Unique aggregates announced from the LACNIC address blocks:    7741
LACNIC Region origin ASes present in the Internet Routing Table:    845
    LACNIC Prefixes per ASN:                                      16.93
LACNIC Region origin ASes announcing only one prefix:               276
LACNIC Region transit ASes present in the Internet Routing Table:   144
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              41965312
    Equivalent to 2 /8s, 128 /16s and 87 /24s
    Percentage of available LACNIC address space announced:        62.5

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:                   2721
    Total AfriNIC prefixes after maximum aggregation:              1042
    AfriNIC Deaggregation factor:                                  2.61
Prefixes being announced from the AfriNIC address blocks:          2251
    Unique aggregates announced from the AfriNIC address blocks:   1356
AfriNIC Region origin ASes present in the Internet Routing Table:   206
    AfriNIC Prefixes per ASN:                                     10.93
AfriNIC Region origin ASes announcing only one prefix:               68
AfriNIC Region transit ASes present in the Internet Routing Table:   33
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:              7433984
    Equivalent to 0 /8s, 113 /16s and 111 /24s
    Percentage of available AfriNIC address space announced:       22.2

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     1332      11140         287   CHINANET-BACKBONE
 4755     1322        382          71   Videsh Sanchar Nigam Ltd. Aut
 9583     1124         80         404   Sify Limited
 9498      998        533          68   BHARTI BT INTERNET LTD.
 4766      797       5440         315   Korea Telecom (KIX)
23577      790         34         686   Korea Telecom (ATM-MPLS)
17488      759         49          56   Hathway IP Over Cable Interne
 7545      699        150         115   TPG Internet Pty Ltd
18101      588        118          45   Reliance Infocom Ltd Internet
 1221      545       1951         426   Telstra Pty Ltd
 4812      543        979          98   China Telecom (Shanghai)
 4668      516         68          10   LG-EDS Systems Inc.
17676      503      10919          64   Softbank BB Corp.
 4808      476        768         107   CNCGROUP IP network: China169
 9443      473        122          77   Primus Telecommunications
 4802      428        116         154   Wantree Development
 7474      393        217         267   SingTel Optus Pty Ltd
17974      364        130          13   PT TELEKOMUNIKASI INDONESIA
 9829      363        258          14   BSNL National Internet Backbo
 4837      354       4944         165   chinanet IDC center beijing n

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 7018     1474       6076         991   AT&T WorldNet Services
 4323     1329       1007         373   Time Warner Telecom
 2386     1210        616         745   AT&T Data Communications Serv
11492     1124        109          32   Cable One 
 6478     1116        322         140   AT&T Worldnet Services 
 6197     1029        718         510   BellSouth Network Solutions, 
18566     1019        288           9   Covad Communications 
  174      971       6780         861   Cogent Communications
  701      942       6547         720   UUNET Technologies, Inc. 
 7011      911        260         548   Citizens Utilities 
20115      805        741         430   Charter Communications 
 1239      801       2723         567   Sprint 
19262      763       2721         182   Verizon Global Networks 
22773      754       2148          49   Cox Communications, Inc.
  209      731       3835         580   Qwest 
 5668      628        171          24   CenturyTel Internet Holdings,
 6517      582        161          37   Yipes Communications, Inc. 
  852      576       1095         363   Telus Advanced Communications
  855      575        254          73   Canadian Research Network 
 6198      569        613         259   BellSouth Network Solutions, 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 2119      506        918         378   Telenor Internet Access
  702      503       1922         404   UUNET - Commercial IP service
24863      362         57          41   LINKdotNET AS number
 9116      345        168          26   Goldenlines main autonomous s
 3301      313       1456         293   TeliaNet Sweden
 3320      313       6035         260   Deutsche Telekom AG
 6746      287        130         263   Dynamic Network Technologies,
 5089      269       1658          54   NTL Group Limited
  680      265       2061         256   DFN-IP service G-WiN
 8220      261        445         244   COLT Telecommunications
 8708      260        420         241   Romania Data Systems S.A.
 3215      256       2392          97   France Telecom Transpac
 8551      232        228          27   Bezeq International
 3352      225       1868          38   Ibernet, Internet Access Netw
 3269      221       2775          73   TELECOM ITALIA
 9121      210       1441          24   TTnet Autonomous System
 3292      195       1379         175   TDC Tele Danmark
12479      193        578           6   Uni2 Autonomous System
 1257      192       1195         170   SWIPnet Swedish IP Network
 3300      192        172          93   AUCS Communications Services 

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151      920       1974         207   UniNet S.A. de C.V. 
11830      483        299           9   Instituto Costarricense de El
16814      426         26           9   NSS, S.A. 
11172      374        115          61   Servicios Alestra S.A de C.V 
 7303      337        175          42   Telecom Argentina Stet-France
14522      334         28           7   SatNet S.A. 
22047      318        246          13   VTR PUNTO NET S.A. 
 6471      317         75          32   ENTEL CHILE S.A. 
14117      281         19          15   Telefonica del Sur S.A. 
10481      261        104           9   Prima S.A. 
11556      235        128           3   Cable-Wireless Panama 
 6147      226        176          27   Telefonica Del Peru 
10620      217         61          26   TVCABLE BOGOTA 
 6503      200        170          82   AVANTEL, S.A. 
23216      195         16          43   RAMtelecom Telecomunicaciones
 8163      177         11           6   METROTEL REDES S.A. 
19169      169         12          18   Telconet 
21826      162         28          61   INTERCABLE 
20299      161         24          20   NEWCOM AMERICAS 
 7738      160        506          23   Telecomunicacoes da Bahia S.A

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3741      282        867         223   The Internet Solution 
 8452      234        188           7   TEDATA
 6713      142        135          11   Itissalat Al-MAGHRIB
 2018      140        301         115   Tertiary Education Network 
33783      126          8          11   EEPAD TISP TELECOM & INTERNET
 5536      124          8          10   Internet Egypt Network
33776       99          6           8   Starcomms Nigeria Limited
24835       87         48           6   RAYA Telecom - Egypt
15475       79         84           4   Nile Online
 2905       75        174          72   The Internetworking Company o
 2561       62          6           2   Egyptian Universities Network
15706       56         12           4   Sudatel Internet Exchange Aut
23889       52         24          15   MAURITIUS TELECOM
 5713       46        294          36   Telkom SA Ltd 
16637       46         21          29   Johnnic e-Ventures 
33774       46         29          24   AS Number for Telecom Algeria
 8524       31          2          10   AUCEGYPT Autonomous System
21280       30          4           4   Swift Global Kenya Ltd.Is an 
12455       26          6           3   Jambonet Autonomous system
10798       25          2          16   Standard Bank of South Africa

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

  ASN   No of nets  Net Savings Description
 4755      1322        1251      Videsh Sanchar Nigam Ltd. Aut
11492      1124        1092      Cable One 
 4134      1332        1045      CHINANET-BACKBONE
18566      1019        1010      Covad Communications 
 6478      1116         976      AT&T Worldnet Services 
 4323      1329         956      Time Warner Telecom
 9498       998         930      BHARTI BT INTERNET LTD.
 9583      1124         720      Sify Limited
 8151       920         713      UniNet S.A. de C.V. 
22773       754         705      Cox Communications, Inc.
17488       759         703      Hathway IP Over Cable Interne
 5668       628         604      CenturyTel Internet Holdings,
 7545       699         584      TPG Internet Pty Ltd
19262       763         581      Verizon Global Networks 
 6517       582         545      Yipes Communications, Inc. 
18101       588         543      Reliance Infocom Ltd Internet
15270       566         528      PaeTec.net -a division of Pae
 6197      1029         519      BellSouth Network Solutions, 
19916       568         517      OLM LLC 
 4668       516         506      LG-EDS Systems Inc.

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

Bad AS  Designation  Network              Transit AS  Description
64513   PRIVATE       63.171.234.0/26       1803       SPRINT 
64513   PRIVATE       63.171.234.64/26      1803       SPRINT 
64513   PRIVATE       63.171.234.128/26     1803       SPRINT 
64513   PRIVATE       63.171.234.192/26     1803       SPRINT 
65038   PRIVATE       88.213.141.0/24      34695       E4A Primary AS
65038   PRIVATE       88.213.155.0/24      34695       E4A Primary AS
24410   UNALLOCATED   203.119.28.0/24       4134       CHINANET-BACKBONE

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

Network            Origin AS  Description
7.1.1.0/24            1239     Sprint 
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
172.33.1.0/24         7018     AT&T WorldNet Services
192.0.10.0/24         9498     BHARTI BT INTERNET LTD.
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 
192.153.136.0/21       721     DLA Systems Automation Center
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        /8:18       /9:9       /10:15      /11:36      /12:134     
/13:257     /14:470     /15:918     /16:9590    /17:4051    /18:6542    
/19:13876   /20:16145   /21:14807   /22:19116   /23:20085   /24:120509  
/25:778     /26:1030    /27:503     /28:79      /29:5       /30:0       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
11492     1116          1124      Cable One 
 6478     1115          1116      AT&T Worldnet Services 
18566     1001          1019      Covad Communications 
 9583      966          1124      Sify Limited
 2386      904          1210      AT&T Data Communications Serv
 7018      812          1474      AT&T WorldNet Services
 7011      808           911      Citizens Utilities 
 6197      782          1029      BellSouth Network Solutions, 
23577      781           790      Korea Telecom (ATM-MPLS)
 4755      710          1322      Videsh Sanchar Nigam Ltd. Aut
 9498      667           998      BHARTI BT INTERNET LTD.
 4766      594           797      Korea Telecom (KIX)
17488      582           759      Hathway IP Over Cable Interne
19916      563           568      OLM LLC 
 4323      558          1329      Time Warner Telecom
 6517      547           582      Yipes Communications, Inc. 
15270      530           566      PaeTec.net -a division of Pae
 4668      506           516      LG-EDS Systems Inc.
18101      498           588      Reliance Infocom Ltd Internet
 5668      493           628      CenturyTel Internet Holdings,

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

   4:8         7:1         8:86       12:1794     13:1        15:19     
  16:3        17:3        18:13       20:37       24:954      25:1      
  32:57       33:3        38:346      40:60       41:307      44:2      
  47:4        52:4        55:3        56:3        57:25       58:472    
  59:386      60:356      61:997      62:937      63:1999     64:3162   
  65:2361     66:3397     67:763      68:644      69:1940     70:442    
  71:104      72:1383     73:2        74:624      75:255      76:124    
  77:282      78:36       80:832      81:830      82:654      83:379    
  84:595      85:851      86:341      87:484      88:285      89:963    
  90:22       91:486      97:6       116:279     117:134     121:262    
 122:595     123:155     124:841     125:981     126:1       128:290    
 129:214     130:140     131:362     132:55      133:9       134:198    
 135:34      136:188     137:81      138:149     139:71      140:493    
 141:173     142:379     143:255     144:299     145:46      146:325    
 147:119     148:409     149:143     150:111     151:159     152:88     
 153:122     154:3       155:261     156:156     157:214     158:158    
 159:171     160:105     161:94      162:186     163:179     164:477    
 165:391     166:275     167:295     168:511     169:121     170:396    
 171:22      172:2       189:69      190:972     192:5736    193:3960   
 194:3177    195:2270    196:981     198:3819    199:3267    200:5069   
 201:1151    202:7392    203:7628    204:3949    205:1982    206:2416   
 207:2818    208:2775    209:3479    210:2440    211:985     212:1341   
 213:1475    214:416     215:41      216:4003    217:1165    218:353    
 219:381     220:1013    221:416     222:265    

End of report



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