Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 18 13:08:20 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 19 Jul, 2008

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

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

BGP routing table entries examined:                              263570
    Prefixes after maximum aggregation:                          129383
    Deaggregation factor:                                          2.04
    Unique aggregates announced to Internet:                     128648
Total ASes present in the Internet Routing Table:                 28709
    Prefixes per ASN:                                              9.18
Origin-only ASes present in the Internet Routing Table:           25036
Origin ASes announcing only one prefix:                           12109
Transit ASes present in the Internet Routing Table:                3673
Transit-only ASes present in the Internet Routing Table:             76
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:               585
    Unregistered ASNs in the Routing Table:                         215
Number of 32-bit ASNs allocated by the RIRs:                         50
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:            778
Number of addresses announced to Internet:                   1894510496
    Equivalent to 112 /8s, 235 /16s and 239 /24s
    Percentage of available address space announced:               51.1
    Percentage of allocated address space announced:               62.1
    Percentage of available address space allocated:               82.3
    Percentage of address space in use by end-sites:               72.7
Total number of prefixes smaller than registry allocations:      128645

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

Prefixes being announced by APNIC Region ASes:                    60485
    Total APNIC prefixes after maximum aggregation:               22626
    APNIC Deaggregation factor:                                    2.67
Prefixes being announced from the APNIC address blocks:           57467
    Unique aggregates announced from the APNIC address blocks:    25516
APNIC Region origin ASes present in the Internet Routing Table:    3307
    APNIC Prefixes per ASN:                                       17.38
APNIC Region origin ASes announcing only one prefix:                882
APNIC Region transit ASes present in the Internet Routing Table:    518
Average APNIC Region AS path length visible:                        3.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC addresses announced to Internet:              368124960
    Equivalent to 21 /8s, 241 /16s and 36 /24s
    Percentage of available APNIC address space announced:         78.4

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:                    121119
    Total ARIN prefixes after maximum aggregation:                65323
    ARIN Deaggregation factor:                                     1.85
Prefixes being announced from the ARIN address blocks:            90675
    Unique aggregates announced from the ARIN address blocks:     35130
ARIN Region origin ASes present in the Internet Routing Table:    12293
    ARIN Prefixes per ASN:                                         7.38
ARIN Region origin ASes announcing only one prefix:                4747
ARIN Region transit ASes present in the Internet Routing Table:    1155
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               352742688
    Equivalent to 21 /8s, 6 /16s and 109 /24s
    Percentage of available ARIN address space announced:          72.5

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:                     56703
    Total RIPE prefixes after maximum aggregation:                34477
    RIPE Deaggregation factor:                                     1.64
Prefixes being announced from the RIPE address blocks:            51898
    Unique aggregates announced from the RIPE address blocks:     34879
RIPE Region origin ASes present in the Internet Routing Table:    11614
    RIPE Prefixes per ASN:                                         4.47
RIPE Region origin ASes announcing only one prefix:                6089
RIPE Region transit ASes present in the Internet Routing Table:    1740
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          18
Number of RIPE addresses announced to Internet:               366805568
    Equivalent to 21 /8s, 221 /16s and 2 /24s
    Percentage of available RIPE address space announced:          84.1

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:                   20673
    Total LACNIC prefixes after maximum aggregation:               5279
    LACNIC Deaggregation factor:                                   3.92
Prefixes being announced from the LACNIC address blocks:          18896
    Unique aggregates announced from the LACNIC address blocks:   10693
LACNIC Region origin ASes present in the Internet Routing Table:    966
    LACNIC Prefixes per ASN:                                      19.56
LACNIC Region origin ASes announcing only one prefix:               316
LACNIC Region transit ASes present in the Internet Routing Table:   162
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              53626880
    Equivalent to 3 /8s, 50 /16s and 72 /24s
    Percentage of available LACNIC address space announced:        53.3

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:                   4008
    Total AfriNIC prefixes after maximum aggregation:              1190
    AfriNIC Deaggregation factor:                                  3.37
Prefixes being announced from the AfriNIC address blocks:          4300
    Unique aggregates announced from the AfriNIC address blocks:   1895
AfriNIC Region origin ASes present in the Internet Routing Table:   241
    AfriNIC Prefixes per ASN:                                     17.84
AfriNIC Region origin ASes announcing only one prefix:               75
AfriNIC Region transit ASes present in the Internet Routing Table:   47
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             12311296
    Equivalent to 0 /8s, 187 /16s and 219 /24s
    Percentage of available AfriNIC address space announced:       36.7

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     1671        342         176   Videsh Sanchar Nigam Ltd. Aut
17488     1219         84          96   Hathway IP Over Cable Interne
 9583     1170         89         481   Sify Limited
 4766      852       6390         347   Korea Telecom (KIX)
23577      829         35         703   Korea Telecom (ATM-MPLS)
 4134      824      13539         334   CHINANET-BACKBONE
 9498      711        547          58   BHARTI BT INTERNET LTD.
 4780      707        351          63   Digital United Inc.
18101      690        167          32   Reliance Infocom Ltd Internet
 4808      617       1111         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
  209     3008       3859         625   Qwest 
 6389     2662       3260         195   bellsouth.net, inc. 
 6298     1606        233         782   Cox Communicatons 
 4323     1482       1061         379   Time Warner Telecom
 2386     1477        646         873   AT&T Data Communications Serv
 7018     1415       6247         988   AT&T WorldNet Services
11492     1210        149          32   Cable One 
 1785     1087        510         104   AppliedTheory Corporation 
18566     1045        296          10   Covad Communications 
20115     1041       1059         558   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       1792         372   TDC Tele Danmark
 3301      332       1460         303   TeliaNet Sweden
 3320      322       7047         270   Deutsche Telekom AG
 8452      319        188          11   TEDATA
 8866      317         77          21   Bulgarian Telecommunication C
 5462      296        666          27   Telewest Broadband
 8551      287        269          38   Bezeq International
 3215      286       2758          90   France Telecom Transpac
  680      274       2047         264   DFN-IP service G-WiN
 6746      269        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     1384       2590         225   UniNet S.A. de C.V. 
11830      612        299           9   Instituto Costarricense de El
22047      565        270          14   VTR PUNTO NET S.A. 
 7303      471        232          63   Telecom Argentina Stet-France
16814      426         27          10   NSS, S.A. 
 6471      414         85          48   ENTEL CHILE S.A. 
11172      408        118          71   Servicios Alestra S.A de C.V 
10620      406        106          64   TVCABLE BOGOTA 
14117      375         23           9   Telefonica del Sur S.A. 
20299      335         23          98   NEWCOM AMERICAS 

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      476         61          24   LINKdotNET AS number
20858      398         34           3   EgyNet
 3741      270        853         225   The Internet Solution 
 2018      209        204         102   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      135         10          12   EEPAD TISP TELECOM & INTERNET
 5713      130        556          75   Telkom SA Ltd 
 5536      120          8          17   Internet Egypt Network
29571      107         13           8   Ci Telecom Autonomous system 
33776       99          6           7   Starcomms Nigeria Limited

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
  209     3008       3859         625   Qwest 
 6389     2662       3260         195   bellsouth.net, inc. 
 4755     1671        342         176   Videsh Sanchar Nigam Ltd. Aut
 6298     1606        233         782   Cox Communicatons 
 4323     1482       1061         379   Time Warner Telecom
 2386     1477        646         873   AT&T Data Communications Serv
 7018     1415       6247         988   AT&T WorldNet Services
 8151     1384       2590         225   UniNet S.A. de C.V. 
17488     1219         84          96   Hathway IP Over Cable Interne
11492     1210        149          32   Cable One 

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

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

  ASN   No of nets  Net Savings Description
 6389      2662        2467      bellsouth.net, inc. 
 4755      1671        1495      Videsh Sanchar Nigam Ltd. Aut
11492      1210        1178      Cable One 
 8151      1384        1159      UniNet S.A. de C.V. 
17488      1219        1123      Hathway IP Over Cable Interne
 4323      1482        1103      Time Warner Telecom
18566      1045        1035      Covad Communications 
 1785      1087         983      AppliedTheory Corporation 
22773       971         907      Cox Communications, Inc.
 6478      1003         835      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          701       UUNET Technologies, 
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
27220   UNALLOCATED   12.35.204.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.152.0/24        7018       AT&T WorldNet Servic

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

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
24.48.244.0/23        7843     Adelphia Corp. 
24.51.159.0/24        7843     Adelphia Corp. 
24.54.23.0/24         7843     Adelphia Corp. 
24.54.224.0/19       20001     HoldCo LLC - Road Runner 
24.75.160.0/19        7843     Adelphia Corp. 
24.75.192.0/18        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

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       /10:16      /11:45      /12:146     
/13:287     /14:517     /15:1041    /16:10011   /17:4336    /18:7517    
/19:15887   /20:18525   /21:18193   /22:22730   /23:23637   /24:137913  
/25:837     /26:1030    /27:778     /28:82      /29:7       /30:1       
/31:0       /32:6       

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

  ASN   No of nets  Total ann.   Description
  209     1760          3008      Qwest 
 6389     1664          2662      bellsouth.net, inc. 
 6298     1582          1606      Cox Communicatons 
11492     1194          1210      Cable One 
 2386     1174          1477      AT&T Data Communications Serv
17488     1033          1219      Hathway IP Over Cable Interne
18566     1026          1045      Covad Communications 
 9583     1025          1170      Sify Limited
 4755     1023          1671      Videsh Sanchar Nigam Ltd. Aut
 6478      994          1003      AT&T Worldnet Services 

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

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

   4:7         8:125      12:2091     13:2        15:22       16:3      
  17:5        18:13       20:35       24:1092     25:1        32:61     
  38:450      40:92       41:657      43:1        44:2        47:12     
  52:3        55:3        56:3        57:25       58:524      59:507    
  60:452      61:1009     62:1206     63:2031     64:3288     65:2386   
  66:3509     67:1229     68:735      69:2266     70:799      71:118    
  72:1961     73:5        74:1064     75:155      76:315      77:749    
  78:748      79:203      80:934      81:840      82:592      83:377    
  84:559      85:960      86:413      87:687      88:338      89:1316   
  90:15       91:1386     92:224      93:691      94:56       96:40     
  97:31       98:253      99:2       112:1       113:1       114:90     
 115:3       116:843     117:320     118:190     119:440     120:59     
 121:562     122:796     123:363     124:890     125:1168    128:361    
 129:199     130:132     131:410     132:66      133:9       134:186    
 135:33      136:223     137:91      138:147     139:94      140:493    
 141:98      142:406     143:325     144:384     145:51      146:366    
 147:157     148:517     149:198     150:129     151:180     152:144    
 153:136     154:10      155:251     156:174     157:291     158:187    
 159:239     160:279     161:118     162:210     163:154     164:525    
 165:452     166:318     167:330     168:621     169:138     170:423    
 171:32      172:10      188:1       189:287     190:2206    192:5798   
 193:4095    194:3231    195:2525    196:1042    198:3734    199:3270   
 200:5566    201:1462    202:7639    203:8045    204:3987    205:2132   
 206:2383    207:2762    208:3422    209:3510    210:2592    211:1074   
 212:1411    213:1610    214:164     215:49      216:4426    217:1195   
 218:343     219:421     220:1059    221:465     222:306    

End of report




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