Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 7 13:10:07 CDT 2010


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 08 May, 2010

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

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

BGP routing table entries examined:                              320551
    Prefixes after maximum aggregation:                          147789
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     155617
Total ASes present in the Internet Routing Table:                 33946
    Prefixes per ASN:                                              9.44
Origin-only ASes present in the Internet Routing Table:           29466
Origin ASes announcing only one prefix:                           14348
Transit ASes present in the Internet Routing Table:                4480
Transit-only ASes present in the Internet Routing Table:            104
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      28
    Max AS path prepend of ASN (28009)                               24
Prefixes from unregistered ASNs in the Routing Table:               335
    Unregistered ASNs in the Routing Table:                         119
Number of 32-bit ASNs allocated by the RIRs:                        560
Prefixes from 32-bit ASNs in the Routing Table:                     627
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            191
Number of addresses announced to Internet:                   2206289024
    Equivalent to 131 /8s, 129 /16s and 76 /24s
    Percentage of available address space announced:               59.5
    Percentage of allocated address space announced:               65.5
    Percentage of available address space allocated:               90.9
    Percentage of address space in use by end-sites:               82.7
Total number of prefixes smaller than registry allocations:      153719

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

Prefixes being announced by APNIC Region ASes:                    76663
    Total APNIC prefixes after maximum aggregation:               26693
    APNIC Deaggregation factor:                                    2.87
Prefixes being announced from the APNIC address blocks:           73330
    Unique aggregates announced from the APNIC address blocks:    32173
APNIC Region origin ASes present in the Internet Routing Table:    4023
    APNIC Prefixes per ASN:                                       18.23
APNIC Region origin ASes announcing only one prefix:               1099
APNIC Region transit ASes present in the Internet Routing Table:    624
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              512199488
    Equivalent to 30 /8s, 135 /16s and 139 /24s
    Percentage of available APNIC address space announced:         76.3

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
                       55296-56319, 131072-132095
APNIC Address Blocks     1/8,  14/8,  27/8,  43/8,  58/8,  59/8,  60/8,
                        61/8, 110/8, 111/8, 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, 133/8, 175/8, 180/8,
                       182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8,
                       219/8, 220/8, 221/8, 222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    133881
    Total ARIN prefixes after maximum aggregation:                68854
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           106747
    Unique aggregates announced from the ARIN address blocks:     40648
ARIN Region origin ASes present in the Internet Routing Table:    13674
    ARIN Prefixes per ASN:                                         7.81
ARIN Region origin ASes announcing only one prefix:                5269
ARIN Region transit ASes present in the Internet Routing Table:    1356
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               726628384
    Equivalent to 43 /8s, 79 /16s and 120 /24s
    Percentage of available ARIN address space announced:          61.9

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
                       53248-55295, 393216-394239
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  24/8,  26/8,  28/8,  29/8,
                        30/8,  32/8,  33/8,  34/8,  35/8,  38/8,  40/8,
                        44/8,  45/8,  47/8,  48/8,  50/8,  52/8,  54/8,
                        55/8,  56/8,  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, 107/8,
                       108/8, 173/8, 174/8, 184/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                     73657
    Total RIPE prefixes after maximum aggregation:                42784
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            66596
    Unique aggregates announced from the RIPE address blocks:     43811
RIPE Region origin ASes present in the Internet Routing Table:    14438
    RIPE Prefixes per ASN:                                         4.61
RIPE Region origin ASes announcing only one prefix:                7467
RIPE Region transit ASes present in the Internet Routing Table:    2160
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               425267232
    Equivalent to 25 /8s, 89 /16s and 16 /24s
    Percentage of available RIPE address space announced:          79.2

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, 47104-52223, 196608-197631
RIPE Address Blocks      2/8,  25/8,  46/8,  51/8,  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, 109/8, 178/8, 193/8, 194/8,
                       195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   28582
    Total LACNIC prefixes after maximum aggregation:               6782
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:          27004
    Unique aggregates announced from the LACNIC address blocks:   13936
LACNIC Region origin ASes present in the Internet Routing Table:   1274
    LACNIC Prefixes per ASN:                                      21.20
LACNIC Region origin ASes announcing only one prefix:               407
LACNIC Region transit ASes present in the Internet Routing Table:   219
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        28
Number of LACNIC addresses announced to Internet:              72850944
    Equivalent to 4 /8s, 87 /16s and 158 /24s
    Percentage of available LACNIC address space announced:        72.4

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 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:                   6925
    Total AfriNIC prefixes after maximum aggregation:              1807
    AfriNIC Deaggregation factor:                                  3.83
Prefixes being announced from the AfriNIC address blocks:          5246
    Unique aggregates announced from the AfriNIC address blocks:   1647
AfriNIC Region origin ASes present in the Internet Routing Table:   359
    AfriNIC Prefixes per ASN:                                     14.61
AfriNIC Region origin ASes announcing only one prefix:              106
AfriNIC Region transit ASes present in the Internet Routing Table:   80
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       24
Number of AfriNIC addresses announced to Internet:             16793344
    Equivalent to 1 /8s, 0 /16s and 63 /24s
    Percentage of available AfriNIC address space announced:       50.0

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1847       8406         480   Korea Telecom (KIX)
17488     1314        140         123   Hathway IP Over Cable Interne
 4755     1290        291         148   TATA Communications formerly 
 7545     1185        232         104   TPG Internet Pty Ltd
17974     1034        281          18   PT TELEKOMUNIKASI INDONESIA
 9583      993         73         489   Sify Limited
 4134      950      20455         399   CHINANET-BACKBONE
24560      891        304         166   Bharti Airtel Ltd., Telemedia
 4808      844       1589         215   CNCGROUP IP network: China169
 9829      794        679          41   BSNL National Internet Backbo

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     3931       3733         288   bellsouth.net, inc. 
 4323     3834       1116         406   Time Warner Telecom
 1785     1784        699         131   PaeTec Communications, Inc.
 7018     1551       5757         984   AT&T WorldNet Services
20115     1536       1505         655   Charter Communications 
 2386     1305        585         925   AT&T Data Communications Serv
 6478     1219        250         152   AT&T Worldnet Services 
 3356     1207      10920         420   Level 3 Communications, LLC 
22773     1153       2606          72   Cox Communications, Inc.
11492     1148        222          14   Cable One 

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
35805      617         56           6   United Telecom of Georgia
 3292      452       2027         393   TDC Tele Danmark
30890      438        100         205   Evolva Telecom
  702      413       1869         329   UUNET - Commercial IP service
 8551      403        356          37   Bezeq International
 8866      395        117          18   Bulgarian Telecommunication C
 3301      365       1413         321   TeliaNet Sweden
 3320      365       7072         318   Deutsche Telekom AG
 3215      346       3218         102   France Telecom Transpac
12479      330        576           5   Uni2 Autonomous System

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     1550       2965         245   UniNet S.A. de C.V. 
10620     1031        230         148   TVCABLE BOGOTA 
28573      889        727          89   NET Servicos de Comunicao S.A
 7303      724        375         101   Telecom Argentina Stet-France
 6503      562        172         211   AVANTEL, S.A. 
22047      547        310          15   VTR PUNTO NET S.A. 
18881      544        268          11   Global Village Telecom 
 7738      477        922          30   Telecomunicacoes da Bahia S.A
 3816      460        195          70   Empresa Nacional de Telecomun
14117      447         30          13   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
 8452      920        189           9   TEDATA
24863      712        147          42   LINKdotNET AS number
36992      626        273         172   Etisalat MISR
 3741      273        852         232   The Internet Solution 
33776      216         11          14   Starcomms Nigeria Limited
 2018      215        230         111   Tertiary Education Network 
24835      183         78          10   RAYA Telecom - Egypt
 6713      176        167          12   Itissalat Al-MAGHRIB
29571      172         19           9   Ci Telecom Autonomous system 
29975      133        506          14   Vodacom

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     3931       3733         288   bellsouth.net, inc. 
 4323     3834       1116         406   Time Warner Telecom
 4766     1847       8406         480   Korea Telecom (KIX)
 1785     1784        699         131   PaeTec Communications, Inc.
 7018     1551       5757         984   AT&T WorldNet Services
 8151     1550       2965         245   UniNet S.A. de C.V. 
20115     1536       1505         655   Charter Communications 
17488     1314        140         123   Hathway IP Over Cable Interne
 2386     1305        585         925   AT&T Data Communications Serv
 4755     1290        291         148   TATA Communications formerly 

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

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

  ASN   No of nets  Net Savings Description
 4323      3834        3428      Time Warner Telecom
 1785      1784        1653      PaeTec Communications, Inc.
 4766      1847        1367      Korea Telecom (KIX)
 8151      1550        1305      UniNet S.A. de C.V. 
17488      1314        1191      Hathway IP Over Cable Interne
 4755      1290        1142      TATA Communications formerly 
11492      1148        1134      Cable One 
 7545      1185        1081      TPG Internet Pty Ltd
22773      1153        1081      Cox Communications, Inc.
 6478      1219        1067      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
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        1239       Sprint 
26973   UNALLOCATED  12.39.154.0/23        1239       Sprint 
26973   UNALLOCATED  12.39.155.0/24        1239       Sprint 
26973   UNALLOCATED  12.39.159.0/24        1239       Sprint 
25639   UNALLOCATED  12.41.169.0/24        7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
41.202.96.0/19       29571     Ci Telecom Autonomous system 
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
41.223.196.0/24      36990     Alkan Telecom Ltd
41.223.197.0/24      36990     Alkan Telecom Ltd
41.223.198.0/24      36990     Alkan Telecom Ltd
41.223.199.0/24      36990     Alkan Telecom Ltd
46.0.0.0/16          12654     RIPE NCC RIS Project

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       /9:10      /10:25      /11:67      /12:191     
/13:398     /14:688     /15:1265    /16:11053   /17:5274    /18:8964    
/19:18279   /20:22518   /21:22662   /22:29424   /23:29006   /24:167759  
/25:955     /26:1199    /27:630     /28:141     /29:9       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2516          3931      bellsouth.net, inc. 
 4323     2333          3834      Time Warner Telecom
 4766     1481          1847      Korea Telecom (KIX)
 1785     1245          1784      PaeTec Communications, Inc.
17488     1063          1314      Hathway IP Over Cable Interne
11492     1056          1148      Cable One 
18566     1040          1059      Covad Communications 
10620      947          1031      TVCABLE BOGOTA 
 7018      930          1551      AT&T WorldNet Services
 9583      845           993      Sify Limited

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

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

   4:13        8:263      12:2006     13:10       15:23       16:3      
  17:8        20:21       24:1417     27:56       32:47       33:12     
  38:665      40:97       41:2159     44:3        46:1        47:25     
  52:6        55:6        56:2        57:24       58:722      59:517    
  60:431      61:1085     62:1043     63:1979     64:3839     65:2368   
  66:4179     67:1824     68:1089     69:2817     70:710      71:240    
  72:1832     73:2        74:2274     75:249      76:308      77:856    
  78:628      79:391      80:993      81:788      82:472      83:445    
  84:702      85:1046     86:457      87:697      88:325      89:1551   
  90:87       91:2736     92:480      93:1098     94:1400     95:589    
  96:246      97:309      98:566      99:28      109:467     110:330    
 111:501     112:255     113:287     114:395     115:586     116:1023   
 117:636     118:427     119:955     120:148     121:741     122:1434   
 123:884     124:1109    125:1298    128:210     129:208     130:197    
 131:561     132:246     133:17      134:194     135:45      136:225    
 137:171     138:254     139:92      140:485     141:136     142:354    
 143:383     144:473     145:52      146:427     147:167     148:595    
 149:316     150:153     151:169     152:262     153:167     154:2      
 155:329     156:184     157:324     158:107     159:368     160:315    
 161:204     162:270     163:171     164:411     165:532     166:497    
 167:396     168:801     169:161     170:700     171:50      172:1      
 173:721     174:664     175:92      178:74      180:455     182:48     
 183:253     184:39      186:378     187:320     188:1294    189:778    
 190:3639    192:5732    193:4690    194:3357    195:2764    196:1194   
 197:1       198:3574    199:3438    200:5347    201:1515    202:7980   
 203:8276    204:4050    205:2336    206:2535    207:3034    208:3922   
 209:3432    210:2506    211:1239    212:1730    213:1679    214:664    
 215:70      216:4566    217:1545    218:504     219:381     220:1107   
 221:400     222:313    

End of report




More information about the NANOG mailing list