Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Mar 13 13:12:24 CDT 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 14 Mar, 2009

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

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

BGP routing table entries examined:                              282891
    Prefixes after maximum aggregation:                          134061
    Deaggregation factor:                                          2.11
    Unique aggregates announced to Internet:                     138798
Total ASes present in the Internet Routing Table:                 30808
    Prefixes per ASN:                                              9.18
Origin-only ASes present in the Internet Routing Table:           26818
Origin ASes announcing only one prefix:                           13049
Transit ASes present in the Internet Routing Table:                3990
Transit-only ASes present in the Internet Routing Table:             89
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:               500
    Unregistered ASNs in the Routing Table:                         168
Number of 32-bit ASNs allocated by the RIRs:                        128
Prefixes from 32-bit ASNs in the Routing Table:                      19
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            237
Number of addresses announced to Internet:                   2015333504
    Equivalent to 120 /8s, 31 /16s and 140 /24s
    Percentage of available address space announced:               54.4
    Percentage of allocated address space announced:               63.6
    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:      139285

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

Prefixes being announced by APNIC Region ASes:                    65455
    Total APNIC prefixes after maximum aggregation:               23364
    APNIC Deaggregation factor:                                    2.80
Prefixes being announced from the APNIC address blocks:           62237
    Unique aggregates announced from the APNIC address blocks:    28362
APNIC Region origin ASes present in the Internet Routing Table:    3567
    APNIC Prefixes per ASN:                                       17.45
APNIC Region origin ASes announcing only one prefix:                966
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:              404953248
    Equivalent to 24 /8s, 35 /16s and 24 /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:                    124056
    Total ARIN prefixes after maximum aggregation:                65410
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            93499
    Unique aggregates announced from the ARIN address blocks:     36106
ARIN Region origin ASes present in the Internet Routing Table:    12836
    ARIN Prefixes per ASN:                                         7.28
ARIN Region origin ASes announcing only one prefix:                4935
ARIN Region transit ASes present in the Internet Routing Table:    1235
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               419494464
    Equivalent to 25 /8s, 0 /16s and 250 /24s
    Percentage of available ARIN address space announced:          80.7

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:                     64709
    Total RIPE prefixes after maximum aggregation:                37715
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            59322
    Unique aggregates announced from the RIPE address blocks:     39468
RIPE Region origin ASes present in the Internet Routing Table:    12799
    RIPE Prefixes per ASN:                                         4.63
RIPE Region origin ASes announcing only one prefix:                6723
RIPE Region transit ASes present in the Internet Routing Table:    1937
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          25
Number of RIPE addresses announced to Internet:               390950176
    Equivalent to 23 /8s, 77 /16s and 109 /24s
    Percentage of available RIPE address space announced:          83.2

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, 47104-52223
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:                   23426
    Total LACNIC prefixes after maximum aggregation:               5806
    LACNIC Deaggregation factor:                                   4.03
Prefixes being announced from the LACNIC address blocks:          21599
    Unique aggregates announced from the LACNIC address blocks:   11767
LACNIC Region origin ASes present in the Internet Routing Table:   1076
    LACNIC Prefixes per ASN:                                      20.07
LACNIC Region origin ASes announcing only one prefix:               339
LACNIC Region transit ASes present in the Internet Routing Table:   176
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC addresses announced to Internet:              61343488
    Equivalent to 3 /8s, 168 /16s and 7 /24s
    Percentage of available LACNIC address space announced:        60.9

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247
                       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:                   4777
    Total AfriNIC prefixes after maximum aggregation:              1383
    AfriNIC Deaggregation factor:                                  3.45
Prefixes being announced from the AfriNIC address blocks:          4481
    Unique aggregates announced from the AfriNIC address blocks:   1338
AfriNIC Region origin ASes present in the Internet Routing Table:   285
    AfriNIC Prefixes per ASN:                                     15.72
AfriNIC Region origin ASes announcing only one prefix:               86
AfriNIC Region transit ASes present in the Internet Routing Table:   55
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             10136064
    Equivalent to 0 /8s, 154 /16s and 170 /24s
    Percentage of available AfriNIC address space announced:       30.2

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     1690       6929         396   Korea Telecom (KIX)
17488     1529        119          97   Hathway IP Over Cable Interne
 4755     1216        431         179   TATA Communications formerly 
 9583     1092         86         528   Sify Limited
 4134      927      16271         367   CHINANET-BACKBONE
18101      753        198          30   Reliance Infocom Ltd Internet
 7545      744        159         104   TPG Internet Pty Ltd
 9498      689        297          49   BHARTI BT INTERNET LTD.
24560      675        228         175   Bharti Airtel Ltd.
 9829      637        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     4322       3670         338   bellsouth.net, inc. 
  209     2846       4149         624   Qwest 
 4323     1795       1065         374   Time Warner Telecom
 1785     1733        717         139   PaeTec Communications, Inc.
20115     1587       1430         719   Charter Communications 
 7018     1451       5880        1013   AT&T WorldNet Services
 6478     1287        296         514   AT&T Worldnet Services 
 2386     1265        682         899   AT&T Data Communications Serv
11492     1194        192          12   Cable One 
 3356     1172      10976         443   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     1238        188           7   TEDATA
30890      447         87         201   SC Kappa Invexim SRL
 3292      443       1762         389   TDC Tele Danmark
12479      403        578           6   Uni2 Autonomous System
 3320      352       7081         295   Deutsche Telekom AG
 3301      343       1685         308   TeliaNet Sweden
 8866      337        109          22   Bulgarian Telecommunication C
 3215      335       2985         109   France Telecom Transpac
29049      322         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     1444       2831         233   UniNet S.A. de C.V. 
10620      826        187          99   TVCABLE BOGOTA 
22047      600        302          14   VTR PUNTO NET S.A. 
11830      520        294          51   Instituto Costarricense de El
 7303      518        260          80   Telecom Argentina Stet-France
16814      491         31          10   NSS, S.A. 
 6471      440         95          32   ENTEL CHILE S.A. 
11172      408        102          73   Servicios Alestra S.A de C.V 
 7738      397        794          28   Telecomunicacoes da Bahia S.A
28573      384        514          24   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      808         75          27   LINKdotNET AS number
20858      292         34           3   This AS will be used to conne
 3741      271        842         231   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      131         15           8   Ci Telecom Autonomous system 
 5536      123          8           9   Internet Egypt Network
33776      118          6           3   Starcomms Nigeria Limited
 5713      116        507          66   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     4322       3670         338   bellsouth.net, inc. 
  209     2846       4149         624   Qwest 
 4323     1795       1065         374   Time Warner Telecom
 1785     1733        717         139   PaeTec Communications, Inc.
 4766     1690       6929         396   Korea Telecom (KIX)
20115     1587       1430         719   Charter Communications 
17488     1529        119          97   Hathway IP Over Cable Interne
 7018     1451       5880        1013   AT&T WorldNet Services
 8151     1444       2831         233   UniNet S.A. de C.V. 
 6478     1287        296         514   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      2846        2222      Qwest 
 1785      1733        1594      PaeTec Communications, Inc.
17488      1529        1432      Hathway IP Over Cable Interne
 4323      1795        1421      Time Warner Telecom
 4766      1690        1294      Korea Telecom (KIX)
 8452      1238        1231      TEDATA
 8151      1444        1211      UniNet S.A. de C.V. 
11492      1194        1182      Cable One 
18566      1061        1051      Covad Communications 
 4755      1216        1037      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      /12:163     
/13:320     /14:576     /15:1132    /16:10354   /17:4622    /18:7971    
/19:17011   /20:20057   /21:19757   /22:25245   /23:25252   /24:148046  
/25:698     /26:867     /27:545     /28:118     /29:37      /30:9       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2804          4322      bellsouth.net, inc. 
  209     1574          2846      Qwest 
 4766     1394          1690      Korea Telecom (KIX)
17488     1300          1529      Hathway IP Over Cable Interne
 8452     1217          1238      TEDATA
11492     1149          1194      Cable One 
 1785     1139          1733      PaeTec Communications, Inc.
18566     1042          1061      Covad Communications 
 2386      960          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        8:171      12:2199     13:2        15:19       16:3      
  17:4        20:36       24:1123     32:51       38:547      40:97     
  41:1969     43:1        44:2        47:21       52:3        55:2      
  56:3        57:25       58:534      59:623      60:460      61:1103   
  62:1113     63:2012     64:3554     65:2421     66:3554     67:1494   
  68:672      69:2506     70:508      71:163      72:1665     73:2      
  74:1431     75:204      76:312      77:825      78:566      79:299    
  80:963      81:819      82:558      83:420      84:591      85:1015   
  86:395      87:634      88:351      89:1494     90:44       91:2049   
  92:273      93:1092     94:1189     95:766      96:98       97:177    
  98:228      99:16      109:1       110:8       112:81      113:88     
 114:213     115:232     116:1130    117:496     118:285     119:644    
 120:133     121:704     122:969     123:558     124:955     125:1285   
 128:220     129:225     130:135     131:410     132:74      133:9      
 134:183     135:39      136:236     137:144     138:146     139:78     
 140:415     141:105     142:390     143:329     144:331     145:41     
 146:373     147:148     148:512     149:237     150:142     151:201    
 152:151     153:135     154:11      155:267     156:167     157:295    
 158:131     159:234     160:281     161:137     162:270     163:145    
 164:518     165:517     166:274     167:357     168:666     169:162    
 170:478     171:39      172:10      173:241     174:145     178:1      
 186:10      187:46      188:7       189:314     190:2697    192:5813   
 193:4217    194:3321    195:2696    196:1057    198:3722    199:3306   
 200:5485    201:1356    202:7854    203:8069    204:3776    205:2157   
 206:2356    207:2807    208:3876    209:3455    210:2629    211:1116   
 212:1514    213:1703    214:69      215:25      216:4554    217:1264   
 218:365     219:408     220:1207    221:460     222:314    

End of report




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