Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Feb 20 12:18:28 CST 2009


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 21 Feb, 2009

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

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

BGP routing table entries examined:                              280761
    Prefixes after maximum aggregation:                          133516
    Deaggregation factor:                                          2.10
    Unique aggregates announced to Internet:                     137721
Total ASes present in the Internet Routing Table:                 30639
    Prefixes per ASN:                                              9.16
Origin-only ASes present in the Internet Routing Table:           26668
Origin ASes announcing only one prefix:                           12988
Transit ASes present in the Internet Routing Table:                3971
Transit-only ASes present in the Internet Routing Table:             90
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      25
    Max AS path prepend of ASN (18678)                               21
Prefixes from unregistered ASNs in the Routing Table:               529
    Unregistered ASNs in the Routing Table:                         177
Number of 32-bit ASNs allocated by the RIRs:                        104
Prefixes from 32-bit ASNs in the Routing Table:                      15
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            215
Number of addresses announced to Internet:                   2007408064
    Equivalent to 119 /8s, 166 /16s and 157 /24s
    Percentage of available address space announced:               54.2
    Percentage of allocated address space announced:               63.3
    Percentage of available address space allocated:               85.5
    Percentage of address space in use by end-sites:               75.8
Total number of prefixes smaller than registry allocations:      137856

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

Prefixes being announced by APNIC Region ASes:                    64873
    Total APNIC prefixes after maximum aggregation:               23232
    APNIC Deaggregation factor:                                    2.79
Prefixes being announced from the APNIC address blocks:           61716
    Unique aggregates announced from the APNIC address blocks:    28187
APNIC Region origin ASes present in the Internet Routing Table:    3534
    APNIC Prefixes per ASN:                                       17.46
APNIC Region origin ASes announcing only one prefix:                956
APNIC Region transit ASes present in the Internet Routing Table:    545
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              402566816
    Equivalent to 23 /8s, 254 /16s and 174 /24s
    Percentage of available APNIC address space announced:         80.0

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, 110/8, 111/8, 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:                    123836
    Total ARIN prefixes after maximum aggregation:                65380
    ARIN Deaggregation factor:                                     1.89
Prefixes being announced from the ARIN address blocks:            93252
    Unique aggregates announced from the ARIN address blocks:     35691
ARIN Region origin ASes present in the Internet Routing Table:    12801
    ARIN Prefixes per ASN:                                         7.28
ARIN Region origin ASes announcing only one prefix:                4933
ARIN Region transit ASes present in the Internet Routing Table:    1228
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               416103232
    Equivalent to 24 /8s, 205 /16s and 59 /24s
    Percentage of available ARIN address space announced:          80.0

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, 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, 108/8, 173/8,
                       174/8, 184/8, 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:                     63670
    Total RIPE prefixes after maximum aggregation:                37387
    RIPE Deaggregation factor:                                     1.70
Prefixes being announced from the RIPE address blocks:            58308
    Unique aggregates announced from the RIPE address blocks:     38867
RIPE Region origin ASes present in the Internet Routing Table:    12697
    RIPE Prefixes per ASN:                                         4.59
RIPE Region origin ASes announcing only one prefix:                6673
RIPE Region transit ASes present in the Internet Routing Table:    1925
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          22
Number of RIPE addresses announced to Internet:               389410528
    Equivalent to 23 /8s, 53 /16s and 238 /24s
    Percentage of available RIPE address space announced:          82.9

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, 38912-39935
                       40960-45055, 47104-49151
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, 109/8,
                       178/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8,
                      

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

Prefixes being announced by LACNIC Region ASes:                   23309
    Total LACNIC prefixes after maximum aggregation:               5718
    LACNIC Deaggregation factor:                                   4.08
Prefixes being announced from the LACNIC address blocks:          21488
    Unique aggregates announced from the LACNIC address blocks:   11883
LACNIC Region origin ASes present in the Internet Routing Table:   1069
    LACNIC Prefixes per ASN:                                      20.10
LACNIC Region origin ASes announcing only one prefix:               341
LACNIC Region transit ASes present in the Internet Routing Table:   178
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC addresses announced to Internet:              61081728
    Equivalent to 3 /8s, 164 /16s and 8 /24s
    Percentage of available LACNIC address space announced:        60.7

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:                   4576
    Total AfriNIC prefixes after maximum aggregation:              1392
    AfriNIC Deaggregation factor:                                  3.29
Prefixes being announced from the AfriNIC address blocks:          4305
    Unique aggregates announced from the AfriNIC address blocks:   1401
AfriNIC Region origin ASes present in the Internet Routing Table:   284
    AfriNIC Prefixes per ASN:                                     15.16
AfriNIC Region origin ASes announcing only one prefix:               85
AfriNIC Region transit ASes present in the Internet Routing Table:   55
Average AfriNIC Region AS path length visible:                      4.0
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             10027520
    Equivalent to 0 /8s, 153 /16s and 2 /24s
    Percentage of available AfriNIC address space announced:       29.9

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks  41/8, 197/8,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1684       6928         395   Korea Telecom (KIX)
17488     1527        114          99   Hathway IP Over Cable Interne
 4755     1211        429         178   TATA Communications formerly 
 9583     1092         86         518   Sify Limited
 4134      927      16255         368   CHINANET-BACKBONE
18101      752        198          25   Reliance Infocom Ltd Internet
 7545      726        158          98   TPG Internet Pty Ltd
 9498      682        297          52   BHARTI BT INTERNET LTD.
24560      673        228         174   Bharti Airtel Ltd.
 9829      638        491          19   BSNL National Internet Backbo

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     4368       3688         341   bellsouth.net, inc. 
  209     2833       4163         616   Qwest 
 4323     1775       1081         377   Time Warner Telecom
 1785     1748        733         139   PaeTec Communications, Inc.
20115     1583       1421         718   Charter Communications 
 7018     1446       5879        1009   AT&T WorldNet Services
 2386     1265        715         904   AT&T Data Communications Serv
 6478     1250        299         506   AT&T Worldnet Services 
11492     1202        192          12   Cable One 
 3356     1138      10976         440   Level 3 Communications, LLC 

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
 8452     1225        188           7   TEDATA
30890      445         88         202   SC Kappa Invexim SRL
 3292      443       1762         388   TDC Tele Danmark
12479      397        578           6   Uni2 Autonomous System
 3320      341       7065         291   Deutsche Telekom AG
 3301      338       1669         304   TeliaNet Sweden
 8866      336        109          22   Bulgarian Telecommunication C
 3215      331       2946         103   France Telecom Transpac
29049      328         26           3   AzerSat LLC.
 8551      312        288          40   Bezeq International

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     1478       2831         230   UniNet S.A. de C.V. 
10620      760        166          93   TVCABLE BOGOTA 
11830      694        299           9   Instituto Costarricense de El
22047      605        302          14   VTR PUNTO NET S.A. 
 7303      511        255          80   Telecom Argentina Stet-France
 6471      438         95          42   ENTEL CHILE S.A. 
16814      427         27          11   NSS, S.A. 
11172      405        118          75   Servicios Alestra S.A de C.V 
 7738      397        794          28   Telecomunicacoes da Bahia S.A
28573      370        506          23   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      665         74          38   LINKdotNET AS number
20858      290         34           3   This AS will be used to conne
 3741      271        857         229   The Internet Solution 
 2018      242        215         142   Tertiary Education Network 
33783      150         10           8   EEPAD TISP TELECOM & INTERNET
 6713      144        135          11   Itissalat Al-MAGHRIB
29571      128         15           8   Ci Telecom Autonomous system 
 5536      119          7          20   Internet Egypt Network
33776      118          6           3   Starcomms Nigeria Limited
 5713      117        523          65   Telkom SA Ltd 

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     4368       3688         341   bellsouth.net, inc. 
  209     2833       4163         616   Qwest 
 4323     1775       1081         377   Time Warner Telecom
 1785     1748        733         139   PaeTec Communications, Inc.
 4766     1684       6928         395   Korea Telecom (KIX)
20115     1583       1421         718   Charter Communications 
17488     1527        114          99   Hathway IP Over Cable Interne
 8151     1478       2831         230   UniNet S.A. de C.V. 
 7018     1446       5879        1009   AT&T WorldNet Services
 2386     1265        715         904   AT&T Data Communications Serv

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

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

  ASN   No of nets  Net Savings Description
  209      2833        2217      Qwest 
 1785      1748        1609      PaeTec Communications, Inc.
17488      1527        1428      Hathway IP Over Cable Interne
 4323      1775        1398      Time Warner Telecom
 4766      1684        1289      Korea Telecom (KIX)
 8151      1478        1248      UniNet S.A. de C.V. 
 8452      1225        1218      TEDATA
11492      1202        1190      Cable One 
18566      1061        1051      Covad Communications 
 4755      1211        1033      TATA Communications formerly 

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

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

Bad AS  Designation  Network              Transit AS  Description
16927   UNALLOCATED   12.0.252.0/23         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
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.154.0/23        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.159.0/24        7018       AT&T WorldNet Servic
32326   UNALLOCATED   12.40.49.0/24         7018       AT&T WorldNet Servic
25639   UNALLOCATED   12.41.169.0/24        7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
24.75.116.0/22       10796     ServiceCo LLC - Road Runner 
24.75.160.0/19        7843     Adelphia Corp. 
24.246.0.0/17         7018     AT&T WorldNet Services
24.246.128.0/18       7018     AT&T WorldNet Services
41.220.16.0/20        8668     TelOne Zimbabwe P/L
41.223.112.0/22       5713     Telkom SA Ltd 
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       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        /8:19       /9:10      /10:20      /11:55      /12:162     
/13:316     /14:577     /15:1125    /16:10341   /17:4586    /18:7895    
/19:16958   /20:19936   /21:19594   /22:24758   /23:25089   /24:147061  
/25:695     /26:856     /27:595     /28:97      /29:8       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2846          4368      bellsouth.net, inc. 
  209     1571          2833      Qwest 
 4766     1392          1684      Korea Telecom (KIX)
17488     1305          1527      Hathway IP Over Cable Interne
 8452     1204          1225      TEDATA
11492     1162          1202      Cable One 
 1785     1154          1748      PaeTec Communications, Inc.
18566     1042          1061      Covad Communications 
 2386      954          1265      AT&T Data Communications Serv
 9583      944          1092      Sify Limited

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

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

   4:13        8:180      12:2206     13:2        15:21       16:3      
  17:4        20:35       24:1114     32:51       38:545      40:96     
  41:1960     43:1        44:2        47:11       52:3        55:2      
  56:3        57:25       58:531      59:614      60:458      61:1099   
  62:1146     63:1994     64:3542     65:2424     66:3538     67:1474   
  68:656      69:2480     70:508      71:159      72:1608     73:2      
  74:1428     75:201      76:306      77:779      78:540      79:326    
  80:969      81:832      82:547      83:406      84:600      85:994    
  86:397      87:624      88:350      89:1403     90:42       91:1985   
  92:277      93:1086     94:1102     95:446      96:90       97:180    
  98:189      99:16      109:1       112:77      113:76      114:208    
 115:221     116:1132    117:493     118:284     119:640     120:134    
 121:704     122:961     123:523     124:858     125:1278    128:221    
 129:222     130:134     131:411     132:73      133:9       134:339    
 135:37      136:223     137:139     138:145     139:79      140:417    
 141:105     142:381     143:324     144:321     145:40      146:373    
 147:151     148:534     149:230     150:141     151:198     152:152    
 153:132     154:10      155:260     156:171     157:291     158:149    
 159:240     160:280     161:138     162:274     163:144     164:516    
 165:503     166:274     167:352     168:682     169:162     170:469    
 171:39      172:10      173:216     174:68      178:1       186:5      
 187:48      189:298     190:2589    192:5811    193:4210    194:3333   
 195:2698    196:1067    198:3702    199:3286    200:5526    201:1487   
 202:7797    203:8062    204:3934    205:2172    206:2346    207:2792   
 208:3835    209:3475    210:2637    211:1125    212:1489    213:1707   
 214:65      215:30      216:4551    217:1213    218:372     219:408    
 220:1219    221:462     222:315    

End of report




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