[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Feb 27 12:15:17 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 28 Feb, 2009

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

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

BGP routing table entries examined:                              281421
    Prefixes after maximum aggregation:                          133739
    Deaggregation factor:                                          2.10
    Unique aggregates announced to Internet:                     137854
Total ASes present in the Internet Routing Table:                 30695
    Prefixes per ASN:                                              9.17
Origin-only ASes present in the Internet Routing Table:           26717
Origin ASes announcing only one prefix:                           12993
Transit ASes present in the Internet Routing Table:                3978
Transit-only ASes present in the Internet Routing Table:             95
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:               501
    Unregistered ASNs in the Routing Table:                         171
Number of 32-bit ASNs allocated by the RIRs:                        115
Prefixes from 32-bit ASNs in the Routing Table:                      17
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            213
Number of addresses announced to Internet:                   2009268672
    Equivalent to 119 /8s, 195 /16s and 1 /24s
    Percentage of available address space announced:               54.2
    Percentage of allocated address space announced:               63.4
    Percentage of available address space allocated:               85.5
    Percentage of address space in use by end-sites:               75.9
Total number of prefixes smaller than registry allocations:      138384

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

Prefixes being announced by APNIC Region ASes:                    65010
    Total APNIC prefixes after maximum aggregation:               23348
    APNIC Deaggregation factor:                                    2.78
Prefixes being announced from the APNIC address blocks:           61875
    Unique aggregates announced from the APNIC address blocks:    28193
APNIC Region origin ASes present in the Internet Routing Table:    3541
    APNIC Prefixes per ASN:                                       17.47
APNIC Region origin ASes announcing only one prefix:                957
APNIC Region transit ASes present in the Internet Routing Table:    542
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              403835552
    Equivalent to 24 /8s, 18 /16s and 10 /24s
    Percentage of available APNIC address space announced:         80.2

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:                    123979
    Total ARIN prefixes after maximum aggregation:                65438
    ARIN Deaggregation factor:                                     1.89
Prefixes being announced from the ARIN address blocks:            93416
    Unique aggregates announced from the ARIN address blocks:     35786
ARIN Region origin ASes present in the Internet Routing Table:    12813
    ARIN Prefixes per ASN:                                         7.29
ARIN Region origin ASes announcing only one prefix:                4929
ARIN Region transit ASes present in the Internet Routing Table:    1238
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               416285760
    Equivalent to 24 /8s, 208 /16s and 4 /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:                     64023
    Total RIPE prefixes after maximum aggregation:                37503
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            58568
    Unique aggregates announced from the RIPE address blocks:     38936
RIPE Region origin ASes present in the Internet Routing Table:    12729
    RIPE Prefixes per ASN:                                         4.60
RIPE Region origin ASes announcing only one prefix:                6677
RIPE Region transit ASes present in the Internet Routing Table:    1919
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          22
Number of RIPE addresses announced to Internet:               389934048
    Equivalent to 23 /8s, 61 /16s and 235 /24s
    Percentage of available RIPE address space announced:          83.0

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:                   23356
    Total LACNIC prefixes after maximum aggregation:               5679
    LACNIC Deaggregation factor:                                   4.11
Prefixes being announced from the LACNIC address blocks:          21538
    Unique aggregates announced from the LACNIC address blocks:   11822
LACNIC Region origin ASes present in the Internet Routing Table:   1070
    LACNIC Prefixes per ASN:                                      20.13
LACNIC Region origin ASes announcing only one prefix:               344
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:              61102208
    Equivalent to 3 /8s, 164 /16s and 88 /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:                   4584
    Total AfriNIC prefixes after maximum aggregation:              1383
    AfriNIC Deaggregation factor:                                  3.31
Prefixes being announced from the AfriNIC address blocks:          4313
    Unique aggregates announced from the AfriNIC address blocks:   1394
AfriNIC Region origin ASes present in the Internet Routing Table:   286
    AfriNIC Prefixes per ASN:                                     15.08
AfriNIC Region origin ASes announcing only one prefix:               86
AfriNIC Region transit ASes present in the Internet Routing Table:   54
Average AfriNIC Region AS path length visible:                      4.0
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             10050048
    Equivalent to 0 /8s, 153 /16s and 90 /24s
    Percentage of available AfriNIC address space announced:       30.0

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     1517        118         101   Hathway IP Over Cable Interne
 4755     1215        430         181   TATA Communications formerly 
 9583     1090         86         519   Sify Limited
 4134      927      16239         367   CHINANET-BACKBONE
18101      754        198          28   Reliance Infocom Ltd Internet
 7545      730        158         100   TPG Internet Pty Ltd
 9498      691        297          53   BHARTI BT INTERNET LTD.
24560      675        228         174   Bharti Airtel Ltd.
 9829      631        491          18   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     4364       3688         342   bellsouth.net, inc. 
  209     2832       4147         615   Qwest 
 4323     1771       1081         377   Time Warner Telecom
 1785     1752        733         139   PaeTec Communications, Inc.
20115     1608       1427         720   Charter Communications 
 7018     1440       5878        1003   AT&T WorldNet Services
 2386     1261        681         900   AT&T Data Communications Serv
 6478     1254        296         529   AT&T Worldnet Services 
11492     1201        192          12   Cable One 
 3356     1137      10976         439   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     1233        188           7   TEDATA
30890      445         88         202   SC Kappa Invexim SRL
 3292      444       1762         389   TDC Tele Danmark
12479      397        578           6   Uni2 Autonomous System
 3320      350       7081         293   Deutsche Telekom AG
 3301      340       1669         305   TeliaNet Sweden
 8866      337        109          22   Bulgarian Telecommunication C
 3215      334       2978         103   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      791        174          98   TVCABLE BOGOTA 
11830      694        299           9   Instituto Costarricense de El
22047      606        302          14   VTR PUNTO NET S.A. 
 7303      513        256          80   Telecom Argentina Stet-France
 6471      438         95          32   ENTEL CHILE S.A. 
16814      427         27          11   NSS, S.A. 
11172      404        118          74   Servicios Alestra S.A de C.V 
 7738      397        794          28   Telecomunicacoes da Bahia S.A
28573      373        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         75          29   LINKdotNET AS number
20858      292         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      130         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     4364       3688         342   bellsouth.net, inc. 
  209     2832       4147         615   Qwest 
 4323     1771       1081         377   Time Warner Telecom
 1785     1752        733         139   PaeTec Communications, Inc.
 4766     1684       6928         395   Korea Telecom (KIX)
20115     1608       1427         720   Charter Communications 
17488     1517        118         101   Hathway IP Over Cable Interne
 8151     1441       2831         230   UniNet S.A. de C.V. 
 7018     1440       5878        1003   AT&T WorldNet Services
 2386     1261        681         900   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      2832        2217      Qwest 
 1785      1752        1613      PaeTec Communications, Inc.
17488      1517        1416      Hathway IP Over Cable Interne
 4323      1771        1394      Time Warner Telecom
 4766      1684        1289      Korea Telecom (KIX)
 8452      1233        1226      TEDATA
 8151      1441        1211      UniNet S.A. de C.V. 
11492      1201        1189      Cable One 
18566      1061        1051      Covad Communications 
 4755      1215        1034      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     
/13:317     /14:578     /15:1130    /16:10345   /17:4598    /18:7913    
/19:16926   /20:19940   /21:19668   /22:24922   /23:25170   /24:147378  
/25:710     /26:853     /27:586     /28:103     /29:8       /30:3       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2843          4364      bellsouth.net, inc. 
  209     1571          2832      Qwest 
 4766     1391          1684      Korea Telecom (KIX)
17488     1296          1517      Hathway IP Over Cable Interne
 8452     1212          1233      TEDATA
11492     1161          1201      Cable One 
 1785     1158          1752      PaeTec Communications, Inc.
18566     1042          1061      Covad Communications 
 2386      954          1261      AT&T Data Communications Serv
 9583      942          1090      Sify Limited

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

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

   4:13        8:170      12:2203     13:2        15:20       16:3      
  17:4        20:35       24:1120     32:51       38:544      40:96     
  41:1962     43:1        44:2        47:19       52:3        55:2      
  56:3        57:25       58:535      59:620      60:458      61:1098   
  62:1108     63:2014     64:3529     65:2423     66:3548     67:1448   
  68:661      69:2481     70:506      71:158      72:1618     73:2      
  74:1429     75:201      76:311      77:786      78:559      79:325    
  80:971      81:834      82:548      83:415      84:586      85:1010   
  86:398      87:626      88:349      89:1411     90:42       91:2011   
  92:271      93:1128     94:1127     95:463      96:92       97:181    
  98:192      99:16      109:1       112:71      113:78      114:196    
 115:229     116:1125    117:491     118:286     119:636     120:133    
 121:710     122:962     123:523     124:936     125:1289    128:221    
 129:222     130:135     131:412     132:73      133:9       134:336    
 135:38      136:222     137:139     138:145     139:79      140:413    
 141:105     142:384     143:329     144:319     145:40      146:373    
 147:152     148:537     149:230     150:141     151:199     152:151    
 153:133     154:10      155:260     156:170     157:294     158:128    
 159:242     160:282     161:138     162:269     163:140     164:517    
 165:504     166:274     167:357     168:678     169:163     170:472    
 171:39      172:10      173:231     174:84      178:1       186:9      
 187:43      188:6       189:300     190:2614    192:5819    193:4215   
 194:3323    195:2716    196:1057    198:3705    199:3285    200:5497   
 201:1503    202:7836    203:8006    204:3943    205:2164    206:2350   
 207:2826    208:3850    209:3475    210:2644    211:1124    212:1504   
 213:1700    214:69      215:26      216:4554    217:1218    218:366    
 219:409     220:1217    221:453     222:319    

End of report
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