Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 12 13:08:34 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 13 Sep, 2008

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

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

BGP routing table entries examined:                              268412
    Prefixes after maximum aggregation:                          129628
    Deaggregation factor:                                          2.07
    Unique aggregates announced to Internet:                     130442
Total ASes present in the Internet Routing Table:                 29220
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           25414
Origin ASes announcing only one prefix:                           12361
Transit ASes present in the Internet Routing Table:                3806
Transit-only ASes present in the Internet Routing Table:             87
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      26
    Max AS path prepend of ASN ( 3816)                               15
Prefixes from unregistered ASNs in the Routing Table:               561
    Unregistered ASNs in the Routing Table:                         209
Number of 32-bit ASNs allocated by the RIRs:                         60
Prefixes from 32-bit ASNs in the Routing Table:                       8
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            767
Number of addresses announced to Internet:                   1916473632
    Equivalent to 114 /8s, 59 /16s and 17 /24s
    Percentage of available address space announced:               51.7
    Percentage of allocated address space announced:               62.8
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               73.5
Total number of prefixes smaller than registry allocations:      131675

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

Prefixes being announced by APNIC Region ASes:                    62162
    Total APNIC prefixes after maximum aggregation:               22841
    APNIC Deaggregation factor:                                    2.72
Prefixes being announced from the APNIC address blocks:           59072
    Unique aggregates announced from the APNIC address blocks:    26366
APNIC Region origin ASes present in the Internet Routing Table:    3375
    APNIC Prefixes per ASN:                                       17.50
APNIC Region origin ASes announcing only one prefix:                908
APNIC Region transit ASes present in the Internet Routing Table:    531
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              376051488
    Equivalent to 22 /8s, 106 /16s and 23 /24s
    Percentage of available APNIC address space announced:         80.1

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:                    121875
    Total ARIN prefixes after maximum aggregation:                64530
    ARIN Deaggregation factor:                                     1.89
Prefixes being announced from the ARIN address blocks:            91148
    Unique aggregates announced from the ARIN address blocks:     34980
ARIN Region origin ASes present in the Internet Routing Table:    12439
    ARIN Prefixes per ASN:                                         7.33
ARIN Region origin ASes announcing only one prefix:                4806
ARIN Region transit ASes present in the Internet Routing Table:    1193
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               361286880
    Equivalent to 21 /8s, 136 /16s and 204 /24s
    Percentage of available ARIN address space announced:          74.3

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:                     58112
    Total RIPE prefixes after maximum aggregation:                35166
    RIPE Deaggregation factor:                                     1.65
Prefixes being announced from the RIPE address blocks:            53245
    Unique aggregates announced from the RIPE address blocks:     35726
RIPE Region origin ASes present in the Internet Routing Table:    11863
    RIPE Prefixes per ASN:                                         4.49
RIPE Region origin ASes announcing only one prefix:                6234
RIPE Region transit ASes present in the Internet Routing Table:    1805
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               371846720
    Equivalent to 22 /8s, 41 /16s and 238 /24s
    Percentage of available RIPE address space announced:          85.2

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, 47104-48127
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:                   21616
    Total LACNIC prefixes after maximum aggregation:               5369
    LACNIC Deaggregation factor:                                   4.03
Prefixes being announced from the LACNIC address blocks:          19815
    Unique aggregates announced from the LACNIC address blocks:   10925
LACNIC Region origin ASes present in the Internet Routing Table:    997
    LACNIC Prefixes per ASN:                                      19.87
LACNIC Region origin ASes announcing only one prefix:               330
LACNIC Region transit ASes present in the Internet Routing Table:   171
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC addresses announced to Internet:              55251968
    Equivalent to 3 /8s, 75 /16s and 20 /24s
    Percentage of available LACNIC address space announced:        54.9

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:                   4086
    Total AfriNIC prefixes after maximum aggregation:              1260
    AfriNIC Deaggregation factor:                                  3.24
Prefixes being announced from the AfriNIC address blocks:          4403
    Unique aggregates announced from the AfriNIC address blocks:   2012
AfriNIC Region origin ASes present in the Internet Routing Table:   256
    AfriNIC Prefixes per ASN:                                     17.20
AfriNIC Region origin ASes announcing only one prefix:               83
AfriNIC Region transit ASes present in the Internet Routing Table:   53
Average AfriNIC Region AS path length visible:                      4.0
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12717312
    Equivalent to 0 /8s, 194 /16s and 13 /24s
    Percentage of available AfriNIC address space announced:       37.9

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     1718        538         181   Videsh Sanchar Nigam Ltd. Aut
17488     1378         93          98   Hathway IP Over Cable Interne
 9583     1146         89         487   Sify Limited
 4766      876       6408         360   Korea Telecom (KIX)
 4134      841      13651         345   CHINANET-BACKBONE
23577      818         34         693   Korea Telecom (ATM-MPLS)
18101      766        152          51   Reliance Infocom Ltd Internet
 4780      714        353          61   Digital United Inc.
 9498      676        291          54   BHARTI BT INTERNET LTD.
 4808      629       1156         138   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     4298       3416         339   bellsouth.net, inc. 
  209     2918       3873         620   Qwest 
 6298     1965        314         757   Cox Communicatons 
20115     1677       1414         719   Charter Communications 
 1785     1653        710         156   AppliedTheory Corporation 
 2386     1555        691         895   AT&T Data Communications Serv
 4323     1520       1073         375   Time Warner Telecom
 7018     1405       5801         974   AT&T WorldNet Services
11492     1210        151          19   Cable One 
 6478     1155        240         185   AT&T Worldnet Services 

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      420       1777         377   TDC Tele Danmark
 3301      334       1460         305   TeliaNet Sweden
 8452      328        188          11   TEDATA
 3215      327       2756         106   France Telecom Transpac
 3320      326       7063         274   Deutsche Telekom AG
30890      323         87         176   SC Kappa Invexim SRL
 8866      317         77          21   Bulgarian Telecommunication C
 5462      296        794          27   Telewest Broadband
 8551      286        270          37   Bezeq International
  680      275       2047         265   DFN-IP service G-WiN

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     1604       2607         222   UniNet S.A. de C.V. 
11830      667        299           9   Instituto Costarricense de El
22047      564        270          14   VTR PUNTO NET S.A. 
 7303      486        239          67   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
10620      424        104          62   TVCABLE BOGOTA 
 6471      420         85          48   ENTEL CHILE S.A. 
11172      409        118          72   Servicios Alestra S.A de C.V 
28573      350        442          29   NET Servicos de Comunicao S.A
14117      345         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      512         67          32   LINKdotNET AS number
20858      403         34           3   EgyNet
 3741      265        855         223   The Internet Solution 
 2018      231        214         138   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      137         10          13   EEPAD TISP TELECOM & INTERNET
 5536      120          8          17   Internet Egypt Network
 5713      118        555          68   Telkom SA Ltd 
33776      116          6           3   Starcomms Nigeria Limited
29571      107         13           8   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     4298       3416         339   bellsouth.net, inc. 
  209     2918       3873         620   Qwest 
 6298     1965        314         757   Cox Communicatons 
 4755     1718        538         181   Videsh Sanchar Nigam Ltd. Aut
20115     1677       1414         719   Charter Communications 
 1785     1653        710         156   AppliedTheory Corporation 
 8151     1604       2607         222   UniNet S.A. de C.V. 
 2386     1555        691         895   AT&T Data Communications Serv
 4323     1520       1073         375   Time Warner Telecom
 7018     1405       5801         974   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      2918        2298      Qwest 
 4755      1718        1537      Videsh Sanchar Nigam Ltd. Aut
 1785      1653        1497      AppliedTheory Corporation 
 8151      1604        1382      UniNet S.A. de C.V. 
17488      1378        1280      Hathway IP Over Cable Interne
 6298      1965        1208      Cox Communicatons 
11492      1210        1191      Cable One 
 4323      1520        1145      Time Warner Telecom
18566      1048        1038      Covad Communications 
 6478      1155         970      AT&T Worldnet Services 

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
13632   UNALLOCATED   12.20.55.0/24         6517       Yipes Communications
13746   UNALLOCATED   12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED   12.25.107.0/24        7018       AT&T WorldNet Servic
13632   UNALLOCATED   12.31.25.0/24         6517       Yipes Communications
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.154.0/23        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 
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        /8:19       /9:9       /10:17      /11:45      /12:146     
/13:294     /14:525     /15:1069    /16:10073   /17:4381    /18:7696    
/19:16085   /20:19021   /21:18546   /22:23244   /23:24388   /24:140269  
/25:784     /26:948     /27:747     /28:89      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2851          4298      bellsouth.net, inc. 
 6298     1940          1965      Cox Communicatons 
  209     1684          2918      Qwest 
 2386     1232          1555      AT&T Data Communications Serv
11492     1191          1210      Cable One 
17488     1185          1378      Hathway IP Over Cable Interne
 1785     1122          1653      AppliedTheory Corporation 
 4755     1053          1718      Videsh Sanchar Nigam Ltd. Aut
 6478     1048          1155      AT&T Worldnet Services 
18566     1029          1048      Covad Communications 

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

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

   4:8         8:139      12:2140     13:2        15:21       16:3      
  17:5        18:13       20:35       24:1089     32:59       38:493    
  40:92       41:725      43:1        44:2        47:12       52:3      
  55:3        56:3        57:27       58:525      59:517      60:451    
  61:969      62:1213     63:2039     64:3193     65:2375     66:3454   
  67:1228     68:774      69:2274     70:844      71:164      72:1990   
  73:7        74:1150     75:164      76:265      77:793      78:824    
  79:265      80:947      81:833      82:580      83:366      84:575    
  85:1021     86:400      87:714      88:335      89:1360     90:21     
  91:1480     92:262      93:819      94:140      96:65       97:77     
  98:315      99:8       114:97      115:44      116:1015    117:362    
 118:243     119:488     120:83      121:591     122:845     123:438    
 124:853     125:1194    128:356     129:201     130:134     131:411    
 132:70      133:9       134:178     135:32      136:223     137:93     
 138:140     139:81      140:505     141:102     142:408     143:306    
 144:363     145:51      146:370     147:157     148:517     149:207    
 150:128     151:182     152:146     153:136     154:10      155:283    
 156:175     157:299     158:162     159:302     160:274     161:139    
 162:253     163:155     164:516     165:494     166:364     167:331    
 168:632     169:143     170:438     171:33      172:10      173:33     
 186:1       187:1       188:1       189:610     190:2210    192:5707   
 193:4145    194:3252    195:2573    196:996     198:3725    199:3294   
 200:5592    201:1528    202:7841    203:8071    204:3931    205:2120   
 206:2354    207:2738    208:3577    209:3421    210:2600    211:1093   
 212:1427    213:1625    214:179     215:50      216:4333    217:1213   
 218:346     219:437     220:1060    221:426     222:316    

End of report




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