Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 26 13:09:23 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 27 Sep, 2008

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

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

BGP routing table entries examined:                              269646
    Prefixes after maximum aggregation:                          130166
    Deaggregation factor:                                          2.07
    Unique aggregates announced to Internet:                     131386
Total ASes present in the Internet Routing Table:                 29358
    Prefixes per ASN:                                              9.18
Origin-only ASes present in the Internet Routing Table:           25526
Origin ASes announcing only one prefix:                           12442
Transit ASes present in the Internet Routing Table:                3832
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:                         205
Number of 32-bit ASNs allocated by the RIRs:                         60
Prefixes from 32-bit ASNs in the Routing Table:                       9
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            750
Number of addresses announced to Internet:                   1908123392
    Equivalent to 113 /8s, 187 /16s and 167 /24s
    Percentage of available address space announced:               51.5
    Percentage of allocated address space announced:               62.5
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               73.6
Total number of prefixes smaller than registry allocations:      132238

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

Prefixes being announced by APNIC Region ASes:                    62392
    Total APNIC prefixes after maximum aggregation:               23007
    APNIC Deaggregation factor:                                    2.71
Prefixes being announced from the APNIC address blocks:           59284
    Unique aggregates announced from the APNIC address blocks:    26672
APNIC Region origin ASes present in the Internet Routing Table:    3394
    APNIC Prefixes per ASN:                                       17.47
APNIC Region origin ASes announcing only one prefix:                911
APNIC Region transit ASes present in the Internet Routing Table:    540
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              377913312
    Equivalent to 22 /8s, 134 /16s and 127 /24s
    Percentage of available APNIC address space announced:         80.4

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:                    122559
    Total ARIN prefixes after maximum aggregation:                64697
    ARIN Deaggregation factor:                                     1.89
Prefixes being announced from the ARIN address blocks:            91822
    Unique aggregates announced from the ARIN address blocks:     35181
ARIN Region origin ASes present in the Internet Routing Table:    12484
    ARIN Prefixes per ASN:                                         7.36
ARIN Region origin ASes announcing only one prefix:                4833
ARIN Region transit ASes present in the Internet Routing Table:    1194
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          16
Number of ARIN addresses announced to Internet:               364411872
    Equivalent to 21 /8s, 184 /16s and 123 /24s
    Percentage of available ARIN address space announced:          74.9

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:                     58577
    Total RIPE prefixes after maximum aggregation:                35374
    RIPE Deaggregation factor:                                     1.66
Prefixes being announced from the RIPE address blocks:            53728
    Unique aggregates announced from the RIPE address blocks:     35985
RIPE Region origin ASes present in the Internet Routing Table:    11935
    RIPE Prefixes per ASN:                                         4.50
RIPE Region origin ASes announcing only one prefix:                6284
RIPE Region transit ASes present in the Internet Routing Table:    1823
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               373446752
    Equivalent to 22 /8s, 66 /16s and 88 /24s
    Percentage of available RIPE address space announced:          85.6

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:                   21455
    Total LACNIC prefixes after maximum aggregation:               5370
    LACNIC Deaggregation factor:                                   4.00
Prefixes being announced from the LACNIC address blocks:          19570
    Unique aggregates announced from the LACNIC address blocks:   11038
LACNIC Region origin ASes present in the Internet Routing Table:   1002
    LACNIC Prefixes per ASN:                                      19.53
LACNIC Region origin ASes announcing only one prefix:               330
LACNIC Region transit ASes present in the Internet Routing Table:   170
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC addresses announced to Internet:              56803328
    Equivalent to 3 /8s, 98 /16s and 192 /24s
    Percentage of available LACNIC address space announced:        56.4

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:                   4103
    Total AfriNIC prefixes after maximum aggregation:              1272
    AfriNIC Deaggregation factor:                                  3.23
Prefixes being announced from the AfriNIC address blocks:          4412
    Unique aggregates announced from the AfriNIC address blocks:   2035
AfriNIC Region origin ASes present in the Internet Routing Table:   260
    AfriNIC Prefixes per ASN:                                     16.97
AfriNIC Region origin ASes announcing only one prefix:               84
AfriNIC Region transit ASes present in the Internet Routing Table:   53
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       13
Number of AfriNIC addresses announced to Internet:             12755200
    Equivalent to 0 /8s, 194 /16s and 161 /24s
    Percentage of available AfriNIC address space announced:       38.0

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     1639        535         179   TATA Communications formerly 
17488     1392         94         101   Hathway IP Over Cable Interne
 9583     1109         86         475   Sify Limited
 4766      876       6407         359   Korea Telecom (KIX)
 4134      839      13665         343   CHINANET-BACKBONE
23577      811         34         691   Korea Telecom (ATM-MPLS)
18101      776        161          62   Reliance Infocom Ltd Internet
 4780      717        353          61   Digital United Inc.
 9498      679        295          56   BHARTI BT INTERNET LTD.
 4808      626       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     4293       3416         339   bellsouth.net, inc. 
  209     2942       4017         621   Qwest 
 6298     1997        318         731   Cox Communicatons 
20115     1682       1421         712   Charter Communications 
 1785     1663        717         154   PaeTec Communications, Inc.
 2386     1551        691         894   AT&T Data Communications Serv
 4323     1519       1067         369   Time Warner Telecom
 7018     1408       5794         978   AT&T WorldNet Services
11492     1212        152          11   Cable One 
 6478     1188        241         189   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      423       1777         378   TDC Tele Danmark
 3301      330       1428         301   TeliaNet Sweden
30890      330         87         175   SC Kappa Invexim SRL
 3215      328       2756         107   France Telecom Transpac
 3320      324       7063         273   Deutsche Telekom AG
 8866      321         79          22   Bulgarian Telecommunication C
 8452      316        188          11   TEDATA
 5462      299        794          26   Telewest Broadband
 8551      287        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     1412       2847         223   UniNet S.A. de C.V. 
11830      668        299           9   Instituto Costarricense de El
22047      564        270          14   VTR PUNTO NET S.A. 
 7303      492        241          70   Telecom Argentina Stet-France
10620      433        106          62   TVCABLE BOGOTA 
16814      426         27          10   NSS, S.A. 
 6471      420         85          48   ENTEL CHILE S.A. 
11172      408        118          71   Servicios Alestra S.A de C.V 
28573      351        444          22   NET Servicos de Comunicao S.A
14117      343         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      543         71          41   LINKdotNET AS number
20858      401         34           3   EgyNet
 3741      265        855         223   The Internet Solution 
 2018      232        215         139   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
 5536      120          8          17   Internet Egypt Network
 5713      119        555          69   Telkom SA Ltd 
33776      116          6           3   Starcomms Nigeria Limited
29571      107         13           8   Ci Telecom Autonomous system 
33783       91         10           9   EEPAD TISP TELECOM & INTERNET

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     4293       3416         339   bellsouth.net, inc. 
  209     2942       4017         621   Qwest 
 6298     1997        318         731   Cox Communicatons 
20115     1682       1421         712   Charter Communications 
 1785     1663        717         154   PaeTec Communications, Inc.
 4755     1639        535         179   TATA Communications formerly 
 2386     1551        691         894   AT&T Data Communications Serv
 4323     1519       1067         369   Time Warner Telecom
 8151     1412       2847         223   UniNet S.A. de C.V. 
 7018     1408       5794         978   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      2942        2321      Qwest 
 1785      1663        1509      PaeTec Communications, Inc.
 4755      1639        1460      TATA Communications formerly 
17488      1392        1291      Hathway IP Over Cable Interne
 6298      1997        1266      Cox Communicatons 
11492      1212        1201      Cable One 
 8151      1412        1189      UniNet S.A. de C.V. 
 4323      1519        1150      Time Warner Telecom
18566      1052        1042      Covad Communications 
 6478      1188         999      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          1239       Sprint 
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 
24.75.160.0/19        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        /8:18       /9:9       /10:17      /11:45      /12:147     
/13:295     /14:530     /15:1062    /16:10110   /17:4400    /18:7671    
/19:16306   /20:19136   /21:18667   /22:23430   /23:24514   /24:140652  
/25:797     /26:967     /27:767     /28:89      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2845          4293      bellsouth.net, inc. 
 6298     1971          1997      Cox Communicatons 
  209     1702          2942      Qwest 
 2386     1231          1551      AT&T Data Communications Serv
17488     1199          1392      Hathway IP Over Cable Interne
11492     1188          1212      Cable One 
 1785     1126          1663      PaeTec Communications, Inc.
 6478     1080          1188      AT&T Worldnet Services 
18566     1033          1052      Covad Communications 
 9583      977          1109      Sify Limited

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

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

   4:8         8:139      12:2163     13:2        15:22       16:3      
  17:5        18:13       20:35       24:1080     32:59       38:501    
  40:92       41:703      43:1        44:2        47:12       52:3      
  55:3        56:3        57:27       58:521      59:521      60:452    
  61:975      62:1226     63:2035     64:3218     65:2388     66:3485   
  67:1262     68:790      69:2328     70:853      71:172      72:2053   
  73:7        74:1199     75:166      76:264      77:795      78:840    
  79:258      80:939      81:838      82:583      83:377      84:576    
  85:1003     86:398      87:717      88:338      89:1361     90:21     
  91:1535     92:267      93:851      94:178      96:74       97:81     
  98:335      99:8       113:1       114:110     115:86      116:1001   
 117:366     118:232     119:498     120:94      121:597     122:850    
 123:437     124:862     125:1196    128:358     129:201     130:134    
 131:413     132:70      133:9       134:177     135:32      136:224    
 137:96      138:142     139:91      140:507     141:103     142:408    
 143:302     144:326     145:51      146:370     147:159     148:521    
 149:209     150:128     151:181     152:149     153:136     154:10     
 155:281     156:173     157:301     158:168     159:306     160:268    
 161:138     162:254     163:154     164:516     165:503     166:367    
 167:332     168:634     169:143     170:447     171:33      172:10     
 173:34      186:1       187:16      188:1       189:312     190:2226   
 192:5756    193:4136    194:3256    195:2583    196:997     198:3727   
 199:3301    200:5508    201:1436    202:7853    203:8086    204:3949   
 205:2140    206:2351    207:2739    208:3643    209:3420    210:2613   
 211:1088    212:1466    213:1631    214:176     215:50      216:4354   
 217:1218    218:350     219:437     220:1064    221:418     222:287    


End of report




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