Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 22 13:08:11 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 23 Aug, 2008

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

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

BGP routing table entries examined:                              266564
    Prefixes after maximum aggregation:                          129847
    Deaggregation factor:                                          2.05
    Unique aggregates announced to Internet:                     129767
Total ASes present in the Internet Routing Table:                 29013
    Prefixes per ASN:                                              9.19
Origin-only ASes present in the Internet Routing Table:           25251
Origin ASes announcing only one prefix:                           12229
Transit ASes present in the Internet Routing Table:                3762
Transit-only ASes present in the Internet Routing Table:             80
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:               571
    Unregistered ASNs in the Routing Table:                         212
Number of 32-bit ASNs allocated by the RIRs:                         58
Prefixes from 32-bit ASNs in the Routing Table:                       7
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            765
Number of addresses announced to Internet:                   1893845344
    Equivalent to 112 /8s, 225 /16s and 201 /24s
    Percentage of available address space announced:               51.1
    Percentage of allocated address space announced:               62.0
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               73.2
Total number of prefixes smaller than registry allocations:      130756

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

Prefixes being announced by APNIC Region ASes:                    61188
    Total APNIC prefixes after maximum aggregation:               22742
    APNIC Deaggregation factor:                                    2.69
Prefixes being announced from the APNIC address blocks:           58158
    Unique aggregates announced from the APNIC address blocks:    26203
APNIC Region origin ASes present in the Internet Routing Table:    3337
    APNIC Prefixes per ASN:                                       17.43
APNIC Region origin ASes announcing only one prefix:                879
APNIC Region transit ASes present in the Internet Routing Table:    514
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              372857376
    Equivalent to 22 /8s, 57 /16s and 90 /24s
    Percentage of available APNIC address space announced:         79.4

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:                    122269
    Total ARIN prefixes after maximum aggregation:                65261
    ARIN Deaggregation factor:                                     1.87
Prefixes being announced from the ARIN address blocks:            91444
    Unique aggregates announced from the ARIN address blocks:     34942
ARIN Region origin ASes present in the Internet Routing Table:    12396
    ARIN Prefixes per ASN:                                         7.38
ARIN Region origin ASes announcing only one prefix:                4764
ARIN Region transit ASes present in the Internet Routing Table:    1180
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          17
Number of ARIN addresses announced to Internet:               360765536
    Equivalent to 21 /8s, 128 /16s and 216 /24s
    Percentage of available ARIN address space announced:          74.1

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:                     57552
    Total RIPE prefixes after maximum aggregation:                34846
    RIPE Deaggregation factor:                                     1.65
Prefixes being announced from the RIPE address blocks:            52673
    Unique aggregates announced from the RIPE address blocks:     35376
RIPE Region origin ASes present in the Internet Routing Table:    11754
    RIPE Prefixes per ASN:                                         4.48
RIPE Region origin ASes announcing only one prefix:                6181
RIPE Region transit ASes present in the Internet Routing Table:    1797
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          26
Number of RIPE addresses announced to Internet:               369446912
    Equivalent to 22 /8s, 5 /16s and 80 /24s
    Percentage of available RIPE address space announced:          84.7

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:                   20959
    Total LACNIC prefixes after maximum aggregation:               5284
    LACNIC Deaggregation factor:                                   3.97
Prefixes being announced from the LACNIC address blocks:          19219
    Unique aggregates announced from the LACNIC address blocks:   10731
LACNIC Region origin ASes present in the Internet Routing Table:    986
    LACNIC Prefixes per ASN:                                      19.49
LACNIC Region origin ASes announcing only one prefix:               325
LACNIC Region transit ASes present in the Internet Routing Table:   168
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              54552832
    Equivalent to 3 /8s, 64 /16s and 105 /24s
    Percentage of available LACNIC address space announced:        54.2

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:                   4024
    Total AfriNIC prefixes after maximum aggregation:              1236
    AfriNIC Deaggregation factor:                                  3.26
Prefixes being announced from the AfriNIC address blocks:          4368
    Unique aggregates announced from the AfriNIC address blocks:   1935
AfriNIC Region origin ASes present in the Internet Routing Table:   250
    AfriNIC Prefixes per ASN:                                     17.47
AfriNIC Region origin ASes announcing only one prefix:               80
AfriNIC Region transit ASes present in the Internet Routing Table:   52
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12627712
    Equivalent to 0 /8s, 192 /16s and 175 /24s
    Percentage of available AfriNIC address space announced:       37.6

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     1703        537         179   Videsh Sanchar Nigam Ltd. Aut
17488     1334         88         101   Hathway IP Over Cable Interne
 9583     1184         93         496   Sify Limited
 4766      868       6407         355   Korea Telecom (KIX)
 4134      835      13521         338   CHINANET-BACKBONE
23577      823         35         698   Korea Telecom (ATM-MPLS)
 4780      715        353          61   Digital United Inc.
18101      693        167          33   Reliance Infocom Ltd Internet
 9498      675        291          54   BHARTI BT INTERNET LTD.
 4808      618       1112         137   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     3200       3358         207   bellsouth.net, inc. 
  209     2881       3857         620   Qwest 
 6298     1981        319         726   Cox Communicatons 
 1785     1647        710         155   AppliedTheory Corporation 
 2386     1505        692         900   AT&T Data Communications Serv
 4323     1495       1073         376   Time Warner Telecom
 7018     1410       5816         983   AT&T WorldNet Services
11492     1214        151          22   Cable One 
 6478     1114        237         174   AT&T Worldnet Services 
20115     1113       1080         576   Charter Communications 

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      414       1776         372   TDC Tele Danmark
 3215      396       2756         106   France Telecom Transpac
 8452      354        188          11   TEDATA
 3301      333       1444         304   TeliaNet Sweden
 3320      323       7047         271   Deutsche Telekom AG
 8866      316         77          21   Bulgarian Telecommunication C
 5462      296        666          27   Telewest Broadband
 8551      288        270          38   Bezeq International
  680      275       2047         265   DFN-IP service G-WiN
 6746      270        126         244   Dynamic Network Technologies,

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     1520       2592         225   UniNet S.A. de C.V. 
11830      664        299           9   Instituto Costarricense de El
22047      563        270          14   VTR PUNTO NET S.A. 
 7303      477        235          67   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      420         85          48   ENTEL CHILE S.A. 
11172      409        118          72   Servicios Alestra S.A de C.V 
10620      383        102          74   TVCABLE BOGOTA 
14117      345         23           9   Telefonica del Sur S.A. 
28573      325        440          28   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      497         64          29   LINKdotNET AS number
20858      402         34           3   EgyNet
 3741      273        857         226   The Internet Solution 
 2018      224        213         131   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      136         10          13   EEPAD TISP TELECOM & INTERNET
 5536      120          8          17   Internet Egypt Network
 5713      118        539          70   Telkom SA Ltd 
33776      115          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     3200       3358         207   bellsouth.net, inc. 
  209     2881       3857         620   Qwest 
 6298     1981        319         726   Cox Communicatons 
 4755     1703        537         179   Videsh Sanchar Nigam Ltd. Aut
 1785     1647        710         155   AppliedTheory Corporation 
 8151     1520       2592         225   UniNet S.A. de C.V. 
 2386     1505        692         900   AT&T Data Communications Serv
 4323     1495       1073         376   Time Warner Telecom
 7018     1410       5816         983   AT&T WorldNet Services
17488     1334         88         101   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      2881        2261      Qwest 
 4755      1703        1524      Videsh Sanchar Nigam Ltd. Aut
 1785      1647        1492      AppliedTheory Corporation 
 8151      1520        1295      UniNet S.A. de C.V. 
 6298      1981        1255      Cox Communicatons 
17488      1334        1233      Hathway IP Over Cable Interne
11492      1214        1192      Cable One 
 4323      1495        1119      Time Warner Telecom
18566      1045        1035      Covad Communications 
 6478      1114         940      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
24.51.159.0/24        7843     Adelphia Corp. 
24.53.86.0/24         7843     Adelphia Corp. 
24.54.224.0/19       20001     HoldCo LLC - Road Runner 
24.55.0.0/18         20001     HoldCo 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 

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      /12:146     
/13:293     /14:530     /15:1058    /16:10041   /17:4382    /18:7591    
/19:16021   /20:18706   /21:18315   /22:23079   /23:24200   /24:139428  
/25:839     /26:1022    /27:718     /28:89      /29:9       /30:1       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2037          3200      bellsouth.net, inc. 
 6298     1954          1981      Cox Communicatons 
  209     1647          2881      Qwest 
11492     1195          1214      Cable One 
 2386     1184          1505      AT&T Data Communications Serv
17488     1142          1334      Hathway IP Over Cable Interne
 1785     1116          1647      AppliedTheory Corporation 
 4755     1043          1703      Videsh Sanchar Nigam Ltd. Aut
 9583     1040          1184      Sify Limited
 6478     1027          1114      AT&T Worldnet Services 

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

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

   4:8         8:134      12:2126     13:2        15:22       16:3      
  17:5        18:13       20:35       24:1085     32:59       38:496    
  40:92       41:700      43:1        44:2        47:12       52:3      
  55:3        56:3        57:26       58:529      59:512      60:453    
  61:983      62:1212     63:2052     64:3236     65:2362     66:3436   
  67:1228     68:776      69:2298     70:860      71:135      72:2012   
  73:6        74:1117     75:165      76:313      77:765      78:820    
  79:228      80:975      81:871      82:586      83:378      84:573    
  85:990      86:402      87:719      88:339      89:1314     90:34     
  91:1414     92:255      93:793      94:75       96:57       97:60     
  98:312      99:3       114:96      115:33      116:971     117:337    
 118:197     119:460     120:74      121:584     122:819     123:380    
 124:846     125:1186    128:353     129:202     130:135     131:409    
 132:70      133:9       134:188     135:33      136:223     137:94     
 138:141     139:93      140:506     141:103     142:406     143:311    
 144:404     145:51      146:373     147:156     148:517     149:199    
 150:128     151:183     152:144     153:136     154:10      155:281    
 156:171     157:288     158:165     159:251     160:272     161:131    
 162:264     163:156     164:517     165:458     166:361     167:332    
 168:623     169:141     170:430     171:33      172:10      173:16     
 188:1       189:488     190:2081    192:5800    193:4133    194:3251   
 195:2566    196:1025    198:3734    199:3307    200:5535    201:1523   
 202:7660    203:8074    204:3953    205:2149    206:2369    207:2759   
 208:3515    209:3435    210:2597    211:1079    212:1423    213:1619   
 214:180     215:50      216:4379    217:1205    218:345     219:429    
 220:1060    221:455     222:311    

End of report




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