Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Mar 6 12:16:11 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 07 Mar, 2009

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

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

BGP routing table entries examined:                              282074
    Prefixes after maximum aggregation:                          133839
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     138127
Total ASes present in the Internet Routing Table:                 30765
    Prefixes per ASN:                                              9.17
Origin-only ASes present in the Internet Routing Table:           26774
Origin ASes announcing only one prefix:                           13039
Transit ASes present in the Internet Routing Table:                3991
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:               497
    Unregistered ASNs in the Routing Table:                         167
Number of 32-bit ASNs allocated by the RIRs:                        116
Prefixes from 32-bit ASNs in the Routing Table:                      18
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            216
Number of addresses announced to Internet:                   2012808064
    Equivalent to 119 /8s, 249 /16s and 3 /24s
    Percentage of available address space announced:               54.3
    Percentage of allocated address space announced:               63.5
    Percentage of available address space allocated:               85.5
    Percentage of address space in use by end-sites:               76.0
Total number of prefixes smaller than registry allocations:      138822

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

Prefixes being announced by APNIC Region ASes:                    65026
    Total APNIC prefixes after maximum aggregation:               23342
    APNIC Deaggregation factor:                                    2.79
Prefixes being announced from the APNIC address blocks:           61870
    Unique aggregates announced from the APNIC address blocks:    28110
APNIC Region origin ASes present in the Internet Routing Table:    3557
    APNIC Prefixes per ASN:                                       17.39
APNIC Region origin ASes announcing only one prefix:                961
APNIC Region transit ASes present in the Internet Routing Table:    543
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              405211808
    Equivalent to 24 /8s, 39 /16s and 10 /24s
    Percentage of available APNIC address space announced:         80.5

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:                    124101
    Total ARIN prefixes after maximum aggregation:                65393
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            93432
    Unique aggregates announced from the ARIN address blocks:     36029
ARIN Region origin ASes present in the Internet Routing Table:    12837
    ARIN Prefixes per ASN:                                         7.28
ARIN Region origin ASes announcing only one prefix:                4937
ARIN Region transit ASes present in the Internet Routing Table:    1239
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               417006400
    Equivalent to 24 /8s, 219 /16s and 3 /24s
    Percentage of available ARIN address space announced:          80.2

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, 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:                     64239
    Total RIPE prefixes after maximum aggregation:                37596
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            58840
    Unique aggregates announced from the RIPE address blocks:     39192
RIPE Region origin ASes present in the Internet Routing Table:    12763
    RIPE Prefixes per ASN:                                         4.61
RIPE Region origin ASes announcing only one prefix:                6710
RIPE Region transit ASes present in the Internet Routing Table:    1929
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          22
Number of RIPE addresses announced to Internet:               390554912
    Equivalent to 23 /8s, 71 /16s and 101 /24s
    Percentage of available RIPE address space announced:          83.1

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:                   23498
    Total LACNIC prefixes after maximum aggregation:               5752
    LACNIC Deaggregation factor:                                   4.09
Prefixes being announced from the LACNIC address blocks:          21672
    Unique aggregates announced from the LACNIC address blocks:   11739
LACNIC Region origin ASes present in the Internet Routing Table:   1078
    LACNIC Prefixes per ASN:                                      20.10
LACNIC Region origin ASes announcing only one prefix:               346
LACNIC Region transit ASes present in the Internet Routing Table:   178
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC addresses announced to Internet:              61303808
    Equivalent to 3 /8s, 167 /16s and 108 /24s
    Percentage of available LACNIC address space announced:        60.9

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:                   4746
    Total AfriNIC prefixes after maximum aggregation:              1375
    AfriNIC Deaggregation factor:                                  3.45
Prefixes being announced from the AfriNIC address blocks:          4456
    Unique aggregates announced from the AfriNIC address blocks:   1334
AfriNIC Region origin ASes present in the Internet Routing Table:   284
    AfriNIC Prefixes per ASN:                                     15.69
AfriNIC Region origin ASes announcing only one prefix:               85
AfriNIC Region transit ASes present in the Internet Routing Table:   58
Average AfriNIC Region AS path length visible:                      4.0
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             10109184
    Equivalent to 0 /8s, 154 /16s and 65 /24s
    Percentage of available AfriNIC address space announced:       30.1

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     1689       6928         396   Korea Telecom (KIX)
17488     1527        119          96   Hathway IP Over Cable Interne
 4755     1212        430         183   TATA Communications formerly 
 9583     1097         87         528   Sify Limited
 4134      927      16271         367   CHINANET-BACKBONE
18101      750        198          29   Reliance Infocom Ltd Internet
 7545      733        158         100   TPG Internet Pty Ltd
 9498      690        297          51   BHARTI BT INTERNET LTD.
24560      675        228         174   Bharti Airtel Ltd.
 9829      636        490          21   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     4363       3686         339   bellsouth.net, inc. 
  209     2837       4149         619   Qwest 
 4323     1780       1081         376   Time Warner Telecom
 1785     1724        717         137   PaeTec Communications, Inc.
20115     1586       1429         718   Charter Communications 
 7018     1444       5880        1007   AT&T WorldNet Services
 6478     1277        296         523   AT&T Worldnet Services 
 2386     1266        681         900   AT&T Data Communications Serv
11492     1191        192          12   Cable One 
 3356     1159      10976         444   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     1236        188           7   TEDATA
 3292      444       1762         389   TDC Tele Danmark
30890      444         87         200   SC Kappa Invexim SRL
12479      402        578           6   Uni2 Autonomous System
 3320      350       7081         293   Deutsche Telekom AG
 3301      341       1685         306   TeliaNet Sweden
 8866      337        109          22   Bulgarian Telecommunication C
 3215      335       2986         104   France Telecom Transpac
29049      328         26           3   AzerSat LLC.
 8551      313        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     1441       2831         230   UniNet S.A. de C.V. 
10620      811        181          97   TVCABLE BOGOTA 
11830      701        299           9   Instituto Costarricense de El
22047      608        302          14   VTR PUNTO NET S.A. 
 7303      515        257          79   Telecom Argentina Stet-France
16814      491         31          10   NSS, S.A. 
 6471      440         95          32   ENTEL CHILE S.A. 
11172      406        118          74   Servicios Alestra S.A de C.V 
 7738      397        794          28   Telecomunicacoes da Bahia S.A
28573      378        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      805         75          26   LINKdotNET AS number
20858      292         34           3   This AS will be used to conne
 3741      271        857         229   The Internet Solution 
 2018      241        215         141   Tertiary Education Network 
 6713      159        150          15   Itissalat Al-MAGHRIB
33783      150         10           8   EEPAD TISP TELECOM & INTERNET
29571      130         15           8   Ci Telecom Autonomous system 
 5536      122          8          14   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     4363       3686         339   bellsouth.net, inc. 
  209     2837       4149         619   Qwest 
 4323     1780       1081         376   Time Warner Telecom
 1785     1724        717         137   PaeTec Communications, Inc.
 4766     1689       6928         396   Korea Telecom (KIX)
20115     1586       1429         718   Charter Communications 
17488     1527        119          96   Hathway IP Over Cable Interne
 7018     1444       5880        1007   AT&T WorldNet Services
 8151     1441       2831         230   UniNet S.A. de C.V. 
 6478     1277        296         523   AT&T Worldnet Services 

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

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

  ASN   No of nets  Net Savings Description
  209      2837        2218      Qwest 
 1785      1724        1587      PaeTec Communications, Inc.
17488      1527        1431      Hathway IP Over Cable Interne
 4323      1780        1404      Time Warner Telecom
 4766      1689        1293      Korea Telecom (KIX)
 8452      1236        1229      TEDATA
 8151      1441        1211      UniNet S.A. de C.V. 
11492      1191        1179      Cable One 
18566      1061        1051      Covad Communications 
 4755      1212        1029      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     
/13:319     /14:573     /15:1126    /16:10354   /17:4599    /18:7941    
/19:16956   /20:20029   /21:19749   /22:25161   /23:25173   /24:147558  
/25:702     /26:860     /27:584     /28:106     /29:8       /30:3       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2841          4363      bellsouth.net, inc. 
  209     1572          2837      Qwest 
 4766     1394          1689      Korea Telecom (KIX)
17488     1296          1527      Hathway IP Over Cable Interne
 8452     1215          1236      TEDATA
11492     1148          1191      Cable One 
 1785     1131          1724      PaeTec Communications, Inc.
18566     1042          1061      Covad Communications 
 2386      959          1266      AT&T Data Communications Serv
 9583      949          1097      Sify Limited

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

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

   4:13        8:171      12:2199     13:2        15:20       16:3      
  17:4        20:35       24:1116     32:51       38:541      40:97     
  41:1966     43:1        44:2        47:19       52:3        55:2      
  56:3        57:25       58:534      59:623      60:460      61:1103   
  62:1102     63:2004     64:3537     65:2426     66:3546     67:1479   
  68:663      69:2493     70:510      71:157      72:1629     73:2      
  74:1431     75:201      76:310      77:811      78:564      79:325    
  80:969      81:847      82:555      83:420      84:590      85:1012   
  86:397      87:626      88:348      89:1389     90:42       91:2020   
  92:271      93:1159     94:1166     95:557      96:97       97:181    
  98:229      99:16      109:1       110:8       112:75      113:82     
 114:203     115:230     116:1120    117:493     118:287     119:601    
 120:133     121:706     122:965     123:542     124:941     125:1286   
 128:220     129:224     130:135     131:413     132:74      133:9      
 134:336     135:38      136:223     137:142     138:145     139:79     
 140:417     141:109     142:391     143:321     144:326     145:40     
 146:369     147:150     148:510     149:231     150:141     151:201    
 152:151     153:134     154:10      155:263     156:170     157:294    
 158:131     159:243     160:281     161:138     162:269     163:145    
 164:519     165:523     166:274     167:357     168:664     169:163    
 170:476     171:39      172:10      173:239     174:134     178:1      
 186:9       187:43      188:6       189:308     190:2680    192:5814   
 193:4219    194:3326    195:2714    196:1057    198:3713    199:3301   
 200:5483    201:1516    202:7794    203:8037    204:3776    205:2160   
 206:2347    207:2823    208:3880    209:3462    210:2641    211:1120   
 212:1493    213:1708    214:69      215:24      216:4558    217:1232   
 218:366     219:399     220:1204    221:341     222:316    

End of report




More information about the NANOG mailing list