Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 24 13:09:48 CDT 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 25 Oct, 2008

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

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

BGP routing table entries examined:                              271907
    Prefixes after maximum aggregation:                          131148
    Deaggregation factor:                                          2.07
    Unique aggregates announced to Internet:                     132451
Total ASes present in the Internet Routing Table:                 29588
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           25742
Origin ASes announcing only one prefix:                           12531
Transit ASes present in the Internet Routing Table:                3846
Transit-only ASes present in the Internet Routing Table:             81
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      19
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               549
    Unregistered ASNs in the Routing Table:                         196
Number of 32-bit ASNs allocated by the RIRs:                         61
Prefixes from 32-bit ASNs in the Routing Table:                      10
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            751
Number of addresses announced to Internet:                   1912392384
    Equivalent to 113 /8s, 252 /16s and 202 /24s
    Percentage of available address space announced:               51.6
    Percentage of allocated address space announced:               62.7
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               73.9
Total number of prefixes smaller than registry allocations:      133807

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

Prefixes being announced by APNIC Region ASes:                    62377
    Total APNIC prefixes after maximum aggregation:               23279
    APNIC Deaggregation factor:                                    2.68
Prefixes being announced from the APNIC address blocks:           59339
    Unique aggregates announced from the APNIC address blocks:    26786
APNIC Region origin ASes present in the Internet Routing Table:    3418
    APNIC Prefixes per ASN:                                       17.36
APNIC Region origin ASes announcing only one prefix:                918
APNIC Region transit ASes present in the Internet Routing Table:    532
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              379774368
    Equivalent to 22 /8s, 162 /16s and 229 /24s
    Percentage of available APNIC address space announced:         80.8

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, 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:                    123035
    Total ARIN prefixes after maximum aggregation:                64787
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:            92511
    Unique aggregates announced from the ARIN address blocks:     35100
ARIN Region origin ASes present in the Internet Routing Table:    12535
    ARIN Prefixes per ASN:                                         7.38
ARIN Region origin ASes announcing only one prefix:                4842
ARIN Region transit ASes present in the Internet Routing Table:    1198
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               363924896
    Equivalent to 21 /8s, 177 /16s and 13 /24s
    Percentage of available ARIN address space announced:          74.8

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:                     59860
    Total RIPE prefixes after maximum aggregation:                35810
    RIPE Deaggregation factor:                                     1.67
Prefixes being announced from the RIPE address blocks:            55001
    Unique aggregates announced from the RIPE address blocks:     36533
RIPE Region origin ASes present in the Internet Routing Table:    12084
    RIPE Prefixes per ASN:                                         4.55
RIPE Region origin ASes announcing only one prefix:                6351
RIPE Region transit ASes present in the Internet Routing Table:    1844
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               376405152
    Equivalent to 22 /8s, 111 /16s and 124 /24s
    Percentage of available RIPE address space announced:          86.3

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:                   22011
    Total LACNIC prefixes after maximum aggregation:               5514
    LACNIC Deaggregation factor:                                   3.99
Prefixes being announced from the LACNIC address blocks:          20083
    Unique aggregates announced from the LACNIC address blocks:   11207
LACNIC Region origin ASes present in the Internet Routing Table:   1018
    LACNIC Prefixes per ASN:                                      19.73
LACNIC Region origin ASes announcing only one prefix:               338
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:              57442816
    Equivalent to 3 /8s, 108 /16s and 130 /24s
    Percentage of available LACNIC address space announced:        57.1

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:                   4078
    Total AfriNIC prefixes after maximum aggregation:              1320
    AfriNIC Deaggregation factor:                                  3.09
Prefixes being announced from the AfriNIC address blocks:          4340
    Unique aggregates announced from the AfriNIC address blocks:   2112
AfriNIC Region origin ASes present in the Internet Routing Table:   264
    AfriNIC Prefixes per ASN:                                     16.44
AfriNIC Region origin ASes announcing only one prefix:               82
AfriNIC Region transit ASes present in the Internet Routing Table:   54
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             12873216
    Equivalent to 0 /8s, 196 /16s and 110 /24s
    Percentage of available AfriNIC address space announced:       38.4

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4755     1491        526         199   TATA Communications formerly 
17488     1392         97         105   Hathway IP Over Cable Interne
 9583     1107         87         475   Sify Limited
 4766      883       6408         364   Korea Telecom (KIX)
 4134      858      13760         353   CHINANET-BACKBONE
23577      812         35         694   Korea Telecom (ATM-MPLS)
18101      783        161          67   Reliance Infocom Ltd Internet
 4780      723        357          63   Digital United Inc.
 9498      692        295          54   BHARTI BT INTERNET LTD.
 4808      631       1164         142   CNCGROUP IP network: China169

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     4354       3416         338   bellsouth.net, inc. 
  209     3061       4035         624   Qwest 
 6298     2025        320         705   Cox Communicatons 
 1785     1696        718         159   PaeTec Communications, Inc.
20115     1650       1437         723   Charter Communications 
 2386     1587        699         896   AT&T Data Communications Serv
 4323     1555       1084         372   Time Warner Telecom
 7018     1416       5873         980   AT&T WorldNet Services
 6478     1322        274         197   AT&T Worldnet Services 
11492     1212        152          11   Cable One 

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
 3292      432       1777         384   TDC Tele Danmark
30890      348         94         188   SC Kappa Invexim SRL
 3301      329       1428         300   TeliaNet Sweden
 3215      328       2756         106   France Telecom Transpac
 8866      328        111          23   Bulgarian Telecommunication C
 3320      326       7063         275   Deutsche Telekom AG
 5462      301        794          27   Telewest Broadband
25233      295         45          27   Awalnet
 8452      294        188          11   TEDATA
 8551      287        270          37   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     1397       2833         220   UniNet S.A. de C.V. 
11830      669        299           9   Instituto Costarricense de El
22047      566        270          14   VTR PUNTO NET S.A. 
10620      518        122          63   TVCABLE BOGOTA 
 7303      494        243          70   Telecom Argentina Stet-France
16814      425         27          10   NSS, S.A. 
 6471      419         85          48   ENTEL CHILE S.A. 
11172      407        118          73   Servicios Alestra S.A de C.V 
28573      353        464          22   NET Servicos de Comunicao S.A
14117      331         23           9   Telefonica del Sur 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      548         72          42   LINKdotNET AS number
 3741      269        856         225   The Internet Solution 
 2018      233        215         139   Tertiary Education Network 
20858      217         34           3   EgyNet
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      138         10          13   EEPAD TISP TELECOM & INTERNET
 5536      120          8          17   Internet Egypt Network
33776      116          6           3   Starcomms Nigeria Limited
 5713      113        555          64   Telkom SA Ltd 
29571      113         13           9   Ci Telecom Autonomous system 

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     4354       3416         338   bellsouth.net, inc. 
  209     3061       4035         624   Qwest 
 6298     2025        320         705   Cox Communicatons 
 1785     1696        718         159   PaeTec Communications, Inc.
20115     1650       1437         723   Charter Communications 
 2386     1587        699         896   AT&T Data Communications Serv
 4323     1555       1084         372   Time Warner Telecom
 4755     1491        526         199   TATA Communications formerly 
 7018     1416       5873         980   AT&T WorldNet Services
 8151     1397       2833         220   UniNet S.A. de C.V. 

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

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

  ASN   No of nets  Net Savings Description
  209      3061        2437      Qwest 
 1785      1696        1537      PaeTec Communications, Inc.
 6298      2025        1320      Cox Communicatons 
 4755      1491        1292      TATA Communications formerly 
17488      1392        1287      Hathway IP Over Cable Interne
11492      1212        1201      Cable One 
 4323      1555        1183      Time Warner Telecom
 8151      1397        1177      UniNet S.A. de C.V. 
 6478      1322        1125      AT&T Worldnet Services 
18566      1059        1049      Covad 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
22492   UNALLOCATED   12.2.46.0/24          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         3549       Global Crossing 

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 
24.142.40.0/21        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
63.143.71.0/24         701     UUNET Technologies, Inc. 
63.143.115.0/24        701     UUNET Technologies, Inc. 

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        /8:18       /9:9       /10:17      /11:46      /12:148     
/13:298     /14:538     /15:1065    /16:10122   /17:4401    /18:7639    
/19:16422   /20:19306   /21:18769   /22:23822   /23:24789   /24:141736  
/25:819     /26:995     /27:841     /28:90      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2852          4354      bellsouth.net, inc. 
 6298     1999          2025      Cox Communicatons 
  209     1781          3061      Qwest 
 2386     1269          1587      AT&T Data Communications Serv
11492     1188          1212      Cable One 
17488     1183          1392      Hathway IP Over Cable Interne
 1785     1157          1696      PaeTec Communications, Inc.
 6478     1105          1322      AT&T Worldnet Services 
18566     1040          1059      Covad Communications 
 9583      974          1107      Sify Limited

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

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

   4:12        8:140      12:2179     13:2        15:21       16:3      
  17:5        20:35       24:1084     32:55       38:512      40:92     
  41:720      43:1        44:2        47:13       52:3        55:3      
  56:3        57:27       58:519      59:531      60:452      61:1030   
  62:1113     63:2035     64:3263     65:2432     66:3500     67:1284   
  68:805      69:2331     70:863      71:138      72:2055     73:7      
  74:1262     75:168      76:284      77:925      78:810      79:282    
  80:911      81:870      82:606      83:403      84:595      85:1039   
  86:508      87:693      88:344      89:1365     90:23       91:1608   
  92:287      93:955      94:267      95:3        96:80       97:111    
  98:360      99:13      113:26      114:114     115:127     116:994    
 117:382     118:238     119:512     120:95      121:608     122:849    
 123:465     124:862     125:1194    128:354     129:207     130:135    
 131:416     132:72      133:9       134:185     135:31      136:156    
 137:98      138:145     139:81      140:409     141:105     142:389    
 143:299     144:324     145:51      146:375     147:141     148:523    
 149:212     150:128     151:208     152:147     153:135     154:10     
 155:278     156:174     157:302     158:169     159:302     160:274    
 161:139     162:255     163:133     164:520     165:502     166:363    
 167:338     168:635     169:154     170:450     171:33      172:10     
 173:56      187:18      188:1       189:296     190:2315    192:5749   
 193:4160    194:3273    195:2618    196:1004    198:3714    199:3301   
 200:5546    201:1450    202:7762    203:8048    204:3919    205:2167   
 206:2285    207:2762    208:3720    209:3429    210:2574    211:1093   
 212:1545    213:1612    214:164     215:25      216:4428    217:1258   
 218:349     219:438     220:1056    221:417     222:300    

End of report




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