Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 15 13:08:24 CDT 2008


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 16 Aug, 2008

Report Website:     http://thyme.apnic.net
Detailed Analysis:  http://thyme.apnic.net/current/

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

BGP routing table entries examined:                              266031
    Prefixes after maximum aggregation:                          129676
    Deaggregation factor:                                          2.05
    Unique aggregates announced to Internet:                     129417
Total ASes present in the Internet Routing Table:                 28943
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           25197
Origin ASes announcing only one prefix:                           12205
Transit ASes present in the Internet Routing Table:                3746
Transit-only ASes present in the Internet Routing Table:             79
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      25
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               581
    Unregistered ASNs in the Routing Table:                         214
Number of 32-bit ASNs allocated by the RIRs:                         57
Prefixes from 32-bit ASNs in the Routing Table:                       7
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            814
Number of addresses announced to Internet:                   1891631072
    Equivalent to 112 /8s, 191 /16s and 255 /24s
    Percentage of available address space announced:               51.0
    Percentage of allocated address space announced:               62.0
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               73.2
Total number of prefixes smaller than registry allocations:      130342

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

Prefixes being announced by APNIC Region ASes:                    61134
    Total APNIC prefixes after maximum aggregation:               22712
    APNIC Deaggregation factor:                                    2.69
Prefixes being announced from the APNIC address blocks:           58105
    Unique aggregates announced from the APNIC address blocks:    26152
APNIC Region origin ASes present in the Internet Routing Table:    3328
    APNIC Prefixes per ASN:                                       17.46
APNIC Region origin ASes announcing only one prefix:                878
APNIC Region transit ASes present in the Internet Routing Table:    514
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         22
Number of APNIC addresses announced to Internet:              371611424
    Equivalent to 22 /8s, 38 /16s and 87 /24s
    Percentage of available APNIC address space announced:         79.1

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
APNIC Address Blocks    58/8,  59/8,  60/8,  61/8, 112/8, 113/8, 114/8,
                       115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8,
                       122/8, 123/8, 124/8, 125/8, 126/8, 202/8, 203/8,
                       210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8,
                      

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    121924
    Total ARIN prefixes after maximum aggregation:                65148
    ARIN Deaggregation factor:                                     1.87
Prefixes being announced from the ARIN address blocks:            91111
    Unique aggregates announced from the ARIN address blocks:     34743
ARIN Region origin ASes present in the Internet Routing Table:    12358
    ARIN Prefixes per ASN:                                         7.37
ARIN Region origin ASes announcing only one prefix:                4754
ARIN Region transit ASes present in the Internet Routing Table:    1184
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               360325024
    Equivalent to 21 /8s, 122 /16s and 31 /24s
    Percentage of available ARIN address space announced:          74.1

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, 46080-47103
ARIN Address Blocks     24/8,  63/8,  64/8,  65/8,  66/8,  67/8,  68/8,
                        69/8,  70/8,  71/8,  72/8,  73/8,  74/8,  75/8,
                        76/8,  96/8,  97/8,  98/8,  99/8, 173/8, 174/8,
                       199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8,
                       216/8,

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

Prefixes being announced by RIPE Region ASes:                     57391
    Total RIPE prefixes after maximum aggregation:                34803
    RIPE Deaggregation factor:                                     1.65
Prefixes being announced from the RIPE address blocks:            52507
    Unique aggregates announced from the RIPE address blocks:     35275
RIPE Region origin ASes present in the Internet Routing Table:    11737
    RIPE Prefixes per ASN:                                         4.47
RIPE Region origin ASes announcing only one prefix:                6169
RIPE Region transit ASes present in the Internet Routing Table:    1778
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               369143104
    Equivalent to 22 /8s, 0 /16s and 173 /24s
    Percentage of available RIPE address space announced:          84.6

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
                       40960-45055, 47104-48127
RIPE Address Blocks     62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 193/8,
                       194/8, 195/8, 212/8, 213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   21007
    Total LACNIC prefixes after maximum aggregation:               5308
    LACNIC Deaggregation factor:                                   3.96
Prefixes being announced from the LACNIC address blocks:          19258
    Unique aggregates announced from the LACNIC address blocks:   10747
LACNIC Region origin ASes present in the Internet Routing Table:    981
    LACNIC Prefixes per ASN:                                      19.63
LACNIC Region origin ASes announcing only one prefix:               324
LACNIC Region transit ASes present in the Internet Routing Table:   169
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC addresses announced to Internet:              54404608
    Equivalent to 3 /8s, 62 /16s and 38 /24s
    Percentage of available LACNIC address space announced:        54.0

LACNIC AS Blocks       26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks  186/8, 187/8, 189/8, 190/8, 200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   3993
    Total AfriNIC prefixes after maximum aggregation:              1225
    AfriNIC Deaggregation factor:                                  3.26
Prefixes being announced from the AfriNIC address blocks:          4347
    Unique aggregates announced from the AfriNIC address blocks:   1868
AfriNIC Region origin ASes present in the Internet Routing Table:   248
    AfriNIC Prefixes per ASN:                                     17.53
AfriNIC Region origin ASes announcing only one prefix:               80
AfriNIC Region transit ASes present in the Internet Routing Table:   52
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12726016
    Equivalent to 0 /8s, 194 /16s and 47 /24s
    Percentage of available AfriNIC address space announced:       37.9

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
 4755     1693        537         180   Videsh Sanchar Nigam Ltd. Aut
17488     1300         89          99   Hathway IP Over Cable Interne
 9583     1176         92         493   Sify Limited
 4766      858       6390         351   Korea Telecom (KIX)
 4134      836      13523         339   CHINANET-BACKBONE
23577      823         35         698   Korea Telecom (ATM-MPLS)
 4780      714        353          61   Digital United Inc.
18101      692        167          33   Reliance Infocom Ltd Internet
 9498      674        291          54   BHARTI BT INTERNET LTD.
 4808      616       1109         135   CNCGROUP IP network: China169

Complete listing at http://thyme.apnic.net/current/data-ASnet-APNIC

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3198       3358         208   bellsouth.net, inc. 
  209     2881       3857         619   Qwest 
 6298     2004        323         735   Cox Communicatons 
 2386     1562        692         899   AT&T Data Communications Serv
 4323     1491       1078         379   Time Warner Telecom
 1785     1454        478         100   AppliedTheory Corporation 
 7018     1412       5830         988   AT&T WorldNet Services
11492     1214        151          22   Cable One 
20115     1113       1080         573   Charter Communications 
18566     1045        296          10   Covad Communications 

Complete listing at http://thyme.apnic.net/current/data-ASnet-ARIN

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3292      414       1776         372   TDC Tele Danmark
 3215      371       2756         106   France Telecom Transpac
 8452      357        188          11   TEDATA
 3301      332       1444         303   TeliaNet Sweden
 3320      323       7047         271   Deutsche Telekom AG
 8866      317         77          21   Bulgarian Telecommunication C
 5462      296        666          27   Telewest Broadband
 8551      289        270          39   Bezeq International
  680      274       2047         264   DFN-IP service G-WiN
 6746      269        126         243   Dynamic Network Technologies,

Complete listing at http://thyme.apnic.net/current/data-ASnet-RIPE

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1517       2592         222   UniNet S.A. de C.V. 
11830      664        299           9   Instituto Costarricense de El
22047      565        270          14   VTR PUNTO NET S.A. 
 7303      479        236          65   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      417         85          48   ENTEL CHILE S.A. 
11172      410        118          72   Servicios Alestra S.A de C.V 
10620      371         99          90   TVCABLE BOGOTA 
14117      348         23           9   Telefonica del Sur S.A. 
28573      318        432          33   NET Servicos de Comunicao S.A

Complete listing at http://thyme.apnic.net/current/data-ASnet-LACNIC

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
24863      496         64          28   LINKdotNET AS number
20858      402         34           3   EgyNet
 3741      267        855         224   The Internet Solution 
 2018      211        213         130   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      136         10          13   EEPAD TISP TELECOM & INTERNET
 5713      129        540          74   Telkom SA Ltd 
 5536      120          8          17   Internet Egypt Network
33776      119          6           3   Starcomms Nigeria Limited
29571      107         13           8   Ci Telecom Autonomous system 

Complete listing at http://thyme.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3198       3358         208   bellsouth.net, inc. 
  209     2881       3857         619   Qwest 
 6298     2004        323         735   Cox Communicatons 
 4755     1693        537         180   Videsh Sanchar Nigam Ltd. Aut
 2386     1562        692         899   AT&T Data Communications Serv
 8151     1517       2592         222   UniNet S.A. de C.V. 
 4323     1491       1078         379   Time Warner Telecom
 1785     1454        478         100   AppliedTheory Corporation 
 7018     1412       5830         988   AT&T WorldNet Services
17488     1300         89          99   Hathway IP Over Cable Interne

Complete listing at http://thyme.apnic.net/current/data-ASnet

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

  ASN   No of nets  Net Savings Description
  209      2881        2262      Qwest 
 4755      1693        1513      Videsh Sanchar Nigam Ltd. Aut
 1785      1454        1354      AppliedTheory Corporation 
 8151      1517        1295      UniNet S.A. de C.V. 
 6298      2004        1269      Cox Communicatons 
17488      1300        1201      Hathway IP Over Cable Interne
11492      1214        1192      Cable One 
 4323      1491        1112      Time Warner Telecom
18566      1045        1035      Covad Communications 
22773       959         897      Cox Communications, Inc.

Complete listing at http://thyme.apnic.net/current/data-CIDRnet

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

Bad AS  Designation  Network              Transit AS  Description
65530   PRIVATE       8.7.233.0/24         20473       Net Transactions LLC
16927   UNALLOCATED   12.0.252.0/23         7018       AT&T WorldNet Servic
22492   UNALLOCATED   12.2.46.0/24          7018       AT&T WorldNet Servic
15132   UNALLOCATED   12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.14.170.0/24        7018       AT&T WorldNet Servic
13632   UNALLOCATED   12.20.55.0/24         6517       Yipes Communications
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
13632   UNALLOCATED   12.31.25.0/24         6517       Yipes Communications
27220   UNALLOCATED   12.35.204.0/24        7018       AT&T WorldNet Servic

Complete listing at http://thyme.apnic.net/current/data-badAS

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

Network            Origin AS  Description
24.51.159.0/24        7843     Adelphia Corp. 
24.53.86.0/24         7843     Adelphia Corp. 
24.54.224.0/19       20001     HoldCo LLC - Road Runner 
24.55.0.0/18         20001     HoldCo LLC - Road Runner 
24.75.160.0/19        7843     Adelphia Corp. 
24.142.40.0/21        7018     AT&T WorldNet Services
24.142.160.0/19       7018     AT&T WorldNet Services
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 

Complete listing at http://thyme.apnic.net/current/data-add-IANA

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       /10:17      /11:45      /12:146     
/13:293     /14:527     /15:1055    /16:10032   /17:4359    /18:7547    
/19:16006   /20:18673   /21:18275   /22:22986   /23:24093   /24:139274  
/25:834     /26:1018    /27:722     /28:85      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2035          3198      bellsouth.net, inc. 
 6298     1977          2004      Cox Communicatons 
  209     1645          2881      Qwest 
 2386     1240          1562      AT&T Data Communications Serv
11492     1195          1214      Cable One 
17488     1107          1300      Hathway IP Over Cable Interne
 1785     1069          1454      AppliedTheory Corporation 
 4755     1042          1693      Videsh Sanchar Nigam Ltd. Aut
 9583     1032          1176      Sify Limited
18566     1026          1045      Covad Communications 

Complete listing at http://thyme.apnic.net/current/data/sXXas-nos

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

   4:8         8:133      12:2100     13:2        14:1        15:22     
  16:3        17:5        18:13       20:35       24:1083     32:59     
  38:482      40:92       41:703      43:1        44:2        47:12     
  52:3        55:3        56:3        57:27       58:526      59:505    
  60:453      61:983      62:1198     63:2032     64:3211     65:2365   
  66:3426     67:1226     68:767      69:2280     70:863      71:131    
  72:2039     73:6        74:1101     75:165      76:307      77:757    
  78:817      79:225      80:979      81:844      82:605      83:379    
  84:573      85:982      86:399      87:707      88:338      89:1309   
  90:33       91:1417     92:243      93:766      94:109      96:54     
  97:50       98:307      99:3       114:90      115:40      116:941    
 117:331     118:195     119:459     120:73      121:587     122:816    
 123:375     124:893     125:1178    128:355     129:201     130:135    
 131:410     132:70      133:9       134:188     135:33      136:223    
 137:94      138:145     139:94      140:503     141:103     142:407    
 143:340     144:398     145:51      146:372     147:156     148:517    
 149:197     150:129     151:183     152:144     153:136     154:10     
 155:278     156:173     157:288     158:166     159:294     160:273    
 161:118     162:262     163:155     164:518     165:456     166:362    
 167:333     168:626     169:139     170:426     171:33      172:10     
 173:12      188:1       189:473     190:2121    192:5794    193:4126   
 194:3239    195:2554    196:1016    198:3728    199:3312    200:5579   
 201:1521    202:7683    203:8093    204:3953    205:2146    206:2369   
 207:2759    208:3489    209:3419    210:2607    211:1075    212:1425   
 213:1610    214:179     215:50      216:4375    217:1203    218:346    
 219:429     220:1060    221:455     222:310    

End of report




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