Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Dec 19 12:12:11 CST 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 20 Dec, 2008

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

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

BGP routing table entries examined:                              275380
    Prefixes after maximum aggregation:                          131356
    Deaggregation factor:                                          2.10
    Unique aggregates announced to Internet:                     132855
Total ASes present in the Internet Routing Table:                 30108
    Prefixes per ASN:                                              9.15
Origin-only ASes present in the Internet Routing Table:           26219
Origin ASes announcing only one prefix:                           12782
Transit ASes present in the Internet Routing Table:                3889
Transit-only ASes present in the Internet Routing Table:             94
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      20
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               522
    Unregistered ASNs in the Routing Table:                         187
Number of 32-bit ASNs allocated by the RIRs:                         68
Prefixes from 32-bit ASNs in the Routing Table:                      12
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            259
Number of addresses announced to Internet:                   1976219264
    Equivalent to 117 /8s, 202 /16s and 182 /24s
    Percentage of available address space announced:               53.3
    Percentage of allocated address space announced:               63.7
    Percentage of available address space allocated:               83.7
    Percentage of address space in use by end-sites:               75.0
Total number of prefixes smaller than registry allocations:      135179

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

Prefixes being announced by APNIC Region ASes:                    63202
    Total APNIC prefixes after maximum aggregation:               22693
    APNIC Deaggregation factor:                                    2.79
Prefixes being announced from the APNIC address blocks:           60116
    Unique aggregates announced from the APNIC address blocks:    25952
APNIC Region origin ASes present in the Internet Routing Table:    3494
    APNIC Prefixes per ASN:                                       17.21
APNIC Region origin ASes announcing only one prefix:                952
APNIC Region transit ASes present in the Internet Routing Table:    535
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              393369248
    Equivalent to 23 /8s, 114 /16s and 86 /24s
    Percentage of available APNIC address space announced:         78.2

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:                    122949
    Total ARIN prefixes after maximum aggregation:                64542
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            92199
    Unique aggregates announced from the ARIN address blocks:     35045
ARIN Region origin ASes present in the Internet Routing Table:    12660
    ARIN Prefixes per ASN:                                         7.28
ARIN Region origin ASes announcing only one prefix:                4896
ARIN Region transit ASes present in the Internet Routing Table:    1212
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          20
Number of ARIN addresses announced to Internet:               405197088
    Equivalent to 24 /8s, 38 /16s and 209 /24s
    Percentage of available ARIN address space announced:          83.3

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:                     62209
    Total RIPE prefixes after maximum aggregation:                36644
    RIPE Deaggregation factor:                                     1.70
Prefixes being announced from the RIPE address blocks:            56377
    Unique aggregates announced from the RIPE address blocks:     37798
RIPE Region origin ASes present in the Internet Routing Table:    12375
    RIPE Prefixes per ASN:                                         4.56
RIPE Region origin ASes announcing only one prefix:                6516
RIPE Region transit ASes present in the Internet Routing Table:    1866
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          17
Number of RIPE addresses announced to Internet:               382814560
    Equivalent to 22 /8s, 209 /16s and 73 /24s
    Percentage of available RIPE address space announced:          87.8

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, 193/8,
                       194/8, 195/8, 212/8, 213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   22976
    Total LACNIC prefixes after maximum aggregation:               5628
    LACNIC Deaggregation factor:                                   4.08
Prefixes being announced from the LACNIC address blocks:          21001
    Unique aggregates announced from the LACNIC address blocks:   11591
LACNIC Region origin ASes present in the Internet Routing Table:   1042
    LACNIC Prefixes per ASN:                                      20.15
LACNIC Region origin ASes announcing only one prefix:               337
LACNIC Region transit ASes present in the Internet Routing Table:   169
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              59214848
    Equivalent to 3 /8s, 135 /16s and 140 /24s
    Percentage of available LACNIC address space announced:        58.8

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:                   3541
    Total AfriNIC prefixes after maximum aggregation:              1429
    AfriNIC Deaggregation factor:                                  2.48
Prefixes being announced from the AfriNIC address blocks:          5159
    Unique aggregates announced from the AfriNIC address blocks:   1961
AfriNIC Region origin ASes present in the Internet Routing Table:   262
    AfriNIC Prefixes per ASN:                                     19.69
AfriNIC Region origin ASes announcing only one prefix:               81
AfriNIC Region transit ASes present in the Internet Routing Table:   54
Average AfriNIC Region AS path length visible:                      4.2
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             12454656
    Equivalent to 0 /8s, 190 /16s and 11 /24s
    Percentage of available AfriNIC address space announced:       24.7

AfriNIC AS Blocks      36864-37887 & ERX transfers
AfriNIC Address Blocks  41/8, 196/8, 197/8,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1557       6409         364   Korea Telecom (KIX)
17488     1442        101          99   Hathway IP Over Cable Interne
 4755     1174        475         153   TATA Communications formerly 
 4134      898      15543         356   CHINANET-BACKBONE
 9583      871        133          81   Sify Limited
18101      786        168          33   Reliance Infocom Ltd Internet
 4780      727        358          64   Digital United Inc.
 9498      688        310          48   BHARTI BT INTERNET LTD.
 7545      656        152          81   TPG Internet Pty Ltd
24560      635        210         164   Bharti Airtel Ltd.

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     4383       3435         344   bellsouth.net, inc. 
  209     2847       4033         626   Qwest 
20115     1849       1472         742   Charter Communications 
 1785     1706        717         155   PaeTec Communications, Inc.
 4323     1611       1067         382   Time Warner Telecom
 6478     1601        368         289   AT&T Worldnet Services 
 2386     1578        705         891   AT&T Data Communications Serv
 7018     1436       5873         994   AT&T WorldNet Services
11492     1230        192          12   Cable One 
 3356     1104      10994         430   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     1632        188          11   TEDATA
 3292      434       1764         383   TDC Tele Danmark
30890      391         80         203   SC Kappa Invexim SRL
12479      377        578           6   Uni2 Autonomous System
 3301      336       1413         303   TeliaNet Sweden
 3320      333       7065         282   Deutsche Telekom AG
 8866      331        109          22   Bulgarian Telecommunication C
29049      330         26           3   AzerSat LLC.
 3215      321       2856          95   France Telecom Transpac
 8551      303        287          35   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     1406       2833         222   UniNet S.A. de C.V. 
11830      667        299           9   Instituto Costarricense de El
10620      631        135          55   TVCABLE BOGOTA 
22047      565        302          14   VTR PUNTO NET S.A. 
 7303      503        249          74   Telecom Argentina Stet-France
 6471      429         86          43   ENTEL CHILE S.A. 
16814      426         27          10   NSS, S.A. 
11172      400        118          72   Servicios Alestra S.A de C.V 
28573      365        491          24   NET Servicos de Comunicao S.A
 7738      343        730          27   Telecomunicacoes da Bahia 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      280         48         128   LINKdotNET AS number
 3741      270        857         227   The Internet Solution 
 2018      239        215         140   Tertiary Education Network 
 6713      144        135          11   Itissalat Al-MAGHRIB
33783      143         10          17   EEPAD TISP TELECOM & INTERNET
29571      121         15           8   Ci Telecom Autonomous system 
 5536      120          8          17   Internet Egypt Network
 5713      119        555          68   Telkom SA Ltd 
33776      116          6           3   Starcomms Nigeria Limited
 2905       80        177          76   Verizon South Africa

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     4383       3435         344   bellsouth.net, inc. 
  209     2847       4033         626   Qwest 
20115     1849       1472         742   Charter Communications 
 1785     1706        717         155   PaeTec Communications, Inc.
 8452     1632        188          11   TEDATA
 4323     1611       1067         382   Time Warner Telecom
 6478     1601        368         289   AT&T Worldnet Services 
 2386     1578        705         891   AT&T Data Communications Serv
 4766     1557       6409         364   Korea Telecom (KIX)
17488     1442        101          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      2847        2221      Qwest 
 8452      1632        1621      TEDATA
 1785      1706        1551      PaeTec Communications, Inc.
17488      1442        1343      Hathway IP Over Cable Interne
 6478      1601        1312      AT&T Worldnet Services 
 4323      1611        1229      Time Warner Telecom
11492      1230        1218      Cable One 
 4766      1557        1193      Korea Telecom (KIX)
 8151      1406        1184      UniNet S.A. de C.V. 
20115      1849        1107      Charter Communications 

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. 
24.142.40.0/21        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 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 
63.140.213.0/24      22555     Universal Talkware Corporatio
63.143.251.0/24      22555     Universal Talkware Corporatio

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        /8:20       /9:9       /10:20      /11:54      /12:159     
/13:308     /14:559     /15:1096    /16:10268   /17:4512    /18:7750    
/19:16644   /20:19464   /21:19076   /22:24169   /23:24653   /24:144536  
/25:644     /26:807     /27:519     /28:97      /29:8       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2866          4383      bellsouth.net, inc. 
  209     1594          2847      Qwest 
 8452     1317          1632      TEDATA
 4766     1292          1557      Korea Telecom (KIX)
 2386     1260          1578      AT&T Data Communications Serv
17488     1232          1442      Hathway IP Over Cable Interne
11492     1200          1230      Cable One 
 1785     1166          1706      PaeTec Communications, Inc.
 6478     1129          1601      AT&T Worldnet Services 
18566     1041          1060      Covad Communications 

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

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

   4:12        8:170      12:2225     13:2        15:21       16:3      
  17:5        20:36       24:1107     32:54       38:525      40:96     
  41:1772     43:1        44:2        47:9        52:3        55:3      
  56:3        57:26       58:518      59:595      60:456      61:1094   
  62:1016     63:2002     64:3406     65:2445     66:3607     67:1439   
  68:655      69:2374     70:530      71:173      72:1597     73:7      
  74:1335     75:191      76:306      77:853      78:511      79:299    
  80:920      81:907      82:537      83:392      84:410      85:1036   
  86:494      87:655      88:350      89:1363     90:45       91:1796   
  92:298      93:1052     94:837      95:106      96:95       97:150    
  98:172      99:10      100:1       110:1       111:1       113:52     
 114:144     115:166     116:1069    117:416     118:234     119:578    
 120:116     121:699     122:895     123:435     124:790     125:1273   
 128:359     129:219     130:135     131:408     132:72      133:9      
 134:193     135:33      136:225     137:131     138:144     139:91     
 140:412     141:110     142:389     143:296     144:309     145:53     
 146:371     147:143     148:610     149:219     150:140     151:209    
 152:149     153:131     154:10      155:249     156:167     157:304    
 158:164     159:300     160:274     161:131     162:254     163:146    
 164:515     165:500     166:364     167:348     168:669     169:159    
 170:459     171:38      172:10      173:128     174:11      187:16     
 188:1       189:356     190:2542    192:5822    193:4145    194:3298   
 195:2631    196:1205    198:3710    199:3315    200:5584    201:1504   
 202:7780    203:8068    204:3930    205:2128    206:2319    207:2761   
 208:3794    209:3494    210:2688    211:1132    212:1501    213:1583   
 214:62      215:26      216:4498    217:1201    218:379     219:405    
 220:1220    221:400     222:299    

End of report




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