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Weekly Routing Table Report

  • From: Routing Analysis Role Account
  • Date: Fri Feb 08 13:36:51 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 [email protected]

For historical data, please see http://thyme.apnic.net.

If you have any comments please contact Philip Smith <[email protected]>.

Routing Table Report   04:00 +10GMT Sat 09 Feb, 2008

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

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

BGP routing table entries examined:                              245014
    Prefixes after maximum aggregation:                          125074
    Deaggregation factor:                                          1.96
    Unique aggregates announced to Internet:                     119835
Total ASes present in the Internet Routing Table:                 27319
    Prefixes per ASN:                                              8.97
Origin-only ASes present in the Internet Routing Table:           23819
Origin ASes announcing only one prefix:                           11581
Transit ASes present in the Internet Routing Table:                3500
Transit-only ASes present in the Internet Routing Table:             75
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (31609)                               21
Prefixes from unregistered ASNs in the Routing Table:                40
    Unregistered ASNs in the Routing Table:                          15
Number of 32-bit ASNs allocated by the RIRs:                         46
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:            872
Number of addresses announced to Internet:                   1828805344
    Equivalent to 109 /8s, 1 /16s and 90 /24s
    Percentage of available address space announced:               49.3
    Percentage of allocated address space announced:               61.3
    Percentage of available address space allocated:               80.5
    Percentage of address space in use by end-sites:               70.0
Total number of prefixes smaller than registry allocations:      115802

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

Prefixes being announced by APNIC Region ASes:                    56179
    Total APNIC prefixes after maximum aggregation:               21117
    APNIC Deaggregation factor:                                    2.66
Prefixes being announced from the APNIC address blocks:           53680
    Unique aggregates announced from the APNIC address blocks:    23760
APNIC Region origin ASes present in the Internet Routing Table:    3119
    APNIC Prefixes per ASN:                                       17.21
APNIC Region origin ASes announcing only one prefix:                823
APNIC Region transit ASes present in the Internet Routing Table:    470
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              329179296
    Equivalent to 19 /8s, 158 /16s and 224 /24s
    Percentage of available APNIC address space announced:         75.5

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, 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:                    115208
    Total ARIN prefixes after maximum aggregation:                65527
    ARIN Deaggregation factor:                                     1.76
Prefixes being announced from the ARIN address blocks:            84084
    Unique aggregates announced from the ARIN address blocks:     33462
ARIN Region origin ASes present in the Internet Routing Table:    12125
    ARIN Prefixes per ASN:                                         6.93
ARIN Region origin ASes announcing only one prefix:                4684
ARIN Region transit ASes present in the Internet Routing Table:    1146
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          15
Number of ARIN addresses announced to Internet:               356776320
    Equivalent to 21 /8s, 67 /16s and 249 /24s
    Percentage of available ARIN address space announced:          78.8

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
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, 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:                     51860
    Total RIPE prefixes after maximum aggregation:                32618
    RIPE Deaggregation factor:                                     1.59
Prefixes being announced from the RIPE address blocks:            47058
    Unique aggregates announced from the RIPE address blocks:     31591
RIPE Region origin ASes present in the Internet Routing Table:    10876
    RIPE Prefixes per ASN:                                         4.33
RIPE Region origin ASes announcing only one prefix:                5704
RIPE Region transit ASes present in the Internet Routing Table:    1661
Average RIPE Region AS path length visible:                         4.0
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               340444928
    Equivalent to 20 /8s, 74 /16s and 199 /24s
    Percentage of available RIPE address space announced:          78.0

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
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:                   18567
    Total LACNIC prefixes after maximum aggregation:               4689
    LACNIC Deaggregation factor:                                   3.96
Prefixes being announced from the LACNIC address blocks:          16941
    Unique aggregates announced from the LACNIC address blocks:    9256
LACNIC Region origin ASes present in the Internet Routing Table:    898
    LACNIC Prefixes per ASN:                                      18.87
LACNIC Region origin ASes announcing only one prefix:               295
LACNIC Region transit ASes present in the Internet Routing Table:   150
Average LACNIC Region AS path length visible:                       3.9
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              48076288
    Equivalent to 2 /8s, 221 /16s and 150 /24s
    Percentage of available LACNIC address space announced:        47.8

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:                   3170
    Total AfriNIC prefixes after maximum aggregation:              1105
    AfriNIC Deaggregation factor:                                  2.87
Prefixes being announced from the AfriNIC address blocks:          3558
    Unique aggregates announced from the AfriNIC address blocks:   1770
AfriNIC Region origin ASes present in the Internet Routing Table:   225
    AfriNIC Prefixes per ASN:                                     15.81
AfriNIC Region origin ASes announcing only one prefix:               75
AfriNIC Region transit ASes present in the Internet Routing Table:   40
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:              9980928
    Equivalent to 0 /8s, 152 /16s and 76 /24s
    Percentage of available AfriNIC address space announced:       29.7

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     1572        385          78   Videsh Sanchar Nigam Ltd. Aut
 9498     1153        549          61   BHARTI BT INTERNET LTD.
 9583     1124         83         438   Sify Limited
17488      964         60          86   Hathway IP Over Cable Interne
 4134      863      11881         311   CHINANET-BACKBONE
 4766      849       5495         342   Korea Telecom (KIX)
23577      817         34         695   Korea Telecom (ATM-MPLS)
18101      688        128          65   Reliance Infocom Ltd Internet
 9829      592        449          11   BSNL National Internet Backbo
 1221      553       1953         427   Telstra Pty Ltd

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
 7018     1419       6003         988   AT&T WorldNet Services
 4323     1388       1012         366   Time Warner Telecom
 2386     1360        634         834   AT&T Data Communications Serv
11492     1212        137          14   Cable One 
 7011     1050        304         605   Citizens Utilities 
18566     1041        296          10   Covad Communications 
 6197     1034        754         511   BellSouth Network Solutions, 
  174      976       6835         815   Cogent Communications
 6478      911        235         106   AT&T Worldnet Services 
  701      894       6575         684   UUNET Technologies, Inc. 

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      397       1778         360   TDC Tele Danmark
 8452      358        188           7   TEDATA
 3301      332       1458         303   TeliaNet Sweden
 3320      325       6022         269   Deutsche Telekom AG
 8866      281         78          24   Bulgarian Telecommunication C
 8551      279        267          42   Bezeq International
  680      275       2046         256   DFN-IP service G-WiN
 8708      272        420         242   Romania Data Systems S.A.
 3215      271       2591          93   France Telecom Transpac
 6746      268        128         246   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     1163       2422         217   UniNet S.A. de C.V. 
11830      555        299           9   Instituto Costarricense de El
 7303      438        213          59   Telecom Argentina Stet-France
16814      428         27          11   NSS, S.A. 
11172      395        115          63   Servicios Alestra S.A de C.V 
 6471      394         85          39   ENTEL CHILE S.A. 
10620      358         94          32   TVCABLE BOGOTA 
14117      351         23          16   Telefonica del Sur S.A. 
22047      323        270          14   VTR PUNTO NET S.A. 
10481      301        120          10   Prima 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      422         60          30   LINKdotNET AS number
 3741      283        869         225   The Internet Solution 
 2018      146        268         115   Tertiary Education Network 
 6713      143        135          11   Itissalat Al-MAGHRIB
33783      129          9          15   EEPAD TISP TELECOM & INTERNET
 5536      120          8          16   Internet Egypt Network
33776       99          6           7   Starcomms Nigeria Limited
20858       96         34           3   EgyNet
29571       80         13           7   Ci Telecom Autonomous system 
 2905       78        176          74   The Internetworking Company o

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
 4755     1572        385          78   Videsh Sanchar Nigam Ltd. Aut
 7018     1419       6003         988   AT&T WorldNet Services
 4323     1388       1012         366   Time Warner Telecom
 2386     1360        634         834   AT&T Data Communications Serv
11492     1212        137          14   Cable One 
 8151     1163       2422         217   UniNet S.A. de C.V. 
 9498     1153        549          61   BHARTI BT INTERNET LTD.
 9583     1124         83         438   Sify Limited
 7011     1050        304         605   Citizens Utilities 
18566     1041        296          10   Covad Communications 

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

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

  ASN   No of nets  Net Savings Description
11492      1212        1198      Cable One 
 9498      1153        1092      BHARTI BT INTERNET LTD.
18566      1041        1031      Covad Communications 
 4323      1388        1022      Time Warner Telecom
 8151      1163         946      UniNet S.A. de C.V. 
17488       964         878      Hathway IP Over Cable Interne
 6478       911         805      AT&T Worldnet Services 
22773       847         789      Cox Communications, Inc.
19262       879         731      Verizon Global Networks 
 9583      1124         686      Sify Limited

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS  Designation  Network              Transit AS  Description
15190   UNALLOCATED   63.98.176.0/24         701       UUNET Technologies, 
18506   UNALLOCATED   63.107.123.0/24      33286       Turlock Irrigation D
16886   UNALLOCATED   63.109.3.0/24         1239       Sprint 
16886   UNALLOCATED   63.167.139.0/24       1239       Sprint 
14699   UNALLOCATED   63.238.252.0/24      30517       Great Lakes Comnet, 
14699   UNALLOCATED   63.238.253.0/24      30517       Great Lakes Comnet, 
14699   UNALLOCATED   64.85.144.0/22       30517       Great Lakes Comnet, 
33526   UNALLOCATED   64.128.26.0/24        4323       Time Warner Telecom
14699   UNALLOCATED   65.112.79.0/24       30517       Great Lakes Comnet, 
21624   UNALLOCATED   65.163.176.0/24        701       UUNET Technologies, 

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

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

Network            Origin AS  Description
24.48.10.0/23        19548     Adelphia Business Solutions 
24.48.12.0/22        19548     Adelphia Business Solutions 
24.48.80.0/21        19548     Adelphia Business Solutions 
24.54.224.0/19       20001     HoldCo 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
60.253.0.0/18        27572     Connexion by Boeing 
60.253.64.0/19       27572     Connexion by Boeing 

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       /10:15      /11:39      /12:137     
/13:279     /14:493     /15:984     /16:9764    /17:4234    /18:7056    
/19:15026   /20:17243   /21:16277   /22:20610   /23:21748   /24:128423  
/25:870     /26:1098    /27:564     /28:108     /29:9       /30:1       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
11492     1200          1212      Cable One 
 2386     1059          1360      AT&T Data Communications Serv
18566     1022          1041      Covad Communications 
 9583      971          1124      Sify Limited
 7011      934          1050      Citizens Utilities 
 4755      933          1572      Videsh Sanchar Nigam Ltd. Aut
 6478      910           911      AT&T Worldnet Services 
 9498      826          1153      BHARTI BT INTERNET LTD.
23577      808           817      Korea Telecom (ATM-MPLS)
17488      780           964      Hathway IP Over Cable Interne

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

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

   4:9         8:100      12:1961     13:2        15:21       16:3      
  17:6        18:13       20:35       22:1        24:1024     25:1      
  32:61       33:4        38:385      40:65       41:572      44:2      
  47:8        52:3        55:3        56:3        57:22       58:517    
  59:425      60:407      61:982      62:1022     63:1974     64:3354   
  65:2364     66:3652     67:1102     68:639      69:2087     70:474    
  71:107      72:1487     73:7        74:819      75:169      76:240    
  77:538      78:451      79:76       80:872      81:792      82:574    
  83:357      84:477      85:1018     86:378      87:646      88:307    
  89:1101     90:44       91:981      92:121      93:62       95:1      
  96:10       97:10       98:45       99:2       114:1       115:1      
 116:509     117:244     118:67      119:122     121:434     122:692    
 123:272     124:796     125:1115    128:308     129:199     130:132    
 131:396     132:66      133:9       134:188     135:37      136:217    
 137:117     138:156     139:62      140:495     141:106     142:378    
 143:273     144:319     145:52      146:337     147:132     148:483    
 149:176     150:121     151:140     152:95      153:131     154:11     
 155:289     156:198     157:250     158:164     159:215     160:229    
 161:102     162:201     163:193     164:561     165:423     166:294    
 167:309     168:577     169:133     170:432     171:28      172:3      
 189:151     190:1363    192:5773    193:4100    194:3236    195:2331   
 196:942     198:3701    199:3200    200:5442    201:1270    202:7543   
 203:7813    204:3962    205:2070    206:2344    207:2721    208:3150   
 209:3615    210:2523    211:1034    212:1274    213:1574    214:448    
 215:47      216:4139    217:1155    218:339     219:401     220:1060   
 221:411     222:306    

End of report