Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jan 22 12:50:19 CST 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 23 Jan, 2010

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

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

BGP routing table entries examined:                              309323
    Prefixes after maximum aggregation:                          143748
    Deaggregation factor:                                          2.15
    Unique aggregates announced to Internet:                     152029
Total ASes present in the Internet Routing Table:                 33159
    Prefixes per ASN:                                              9.33
Origin-only ASes present in the Internet Routing Table:           28791
Origin ASes announcing only one prefix:                           14048
Transit ASes present in the Internet Routing Table:                4368
Transit-only ASes present in the Internet Routing Table:            106
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      23
    Max AS path prepend of ASN ( 9503)                               21
Prefixes from unregistered ASNs in the Routing Table:               764
    Unregistered ASNs in the Routing Table:                         132
Number of 32-bit ASNs allocated by the RIRs:                        406
Prefixes from 32-bit ASNs in the Routing Table:                     351
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            186
Number of addresses announced to Internet:                   2178191808
    Equivalent to 129 /8s, 212 /16s and 145 /24s
    Percentage of available address space announced:               58.8
    Percentage of allocated address space announced:               65.9
    Percentage of available address space allocated:               89.1
    Percentage of address space in use by end-sites:               80.8
Total number of prefixes smaller than registry allocations:      149077

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

Prefixes being announced by APNIC Region ASes:                    74725
    Total APNIC prefixes after maximum aggregation:               25834
    APNIC Deaggregation factor:                                    2.89
Prefixes being announced from the APNIC address blocks:           71407
    Unique aggregates announced from the APNIC address blocks:    31479
APNIC Region origin ASes present in the Internet Routing Table:    3922
    APNIC Prefixes per ASN:                                       18.21
APNIC Region origin ASes announcing only one prefix:               1070
APNIC Region transit ASes present in the Internet Routing Table:    619
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         23
Number of APNIC addresses announced to Internet:              489484832
    Equivalent to 29 /8s, 44 /16s and 242 /24s
    Percentage of available APNIC address space announced:         76.8

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,  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,

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

Prefixes being announced by ARIN Region ASes:                    129460
    Total ARIN prefixes after maximum aggregation:                67652
    ARIN Deaggregation factor:                                     1.91
Prefixes being announced from the ARIN address blocks:           103566
    Unique aggregates announced from the ARIN address blocks:     39277
ARIN Region origin ASes present in the Internet Routing Table:    13475
    ARIN Prefixes per ASN:                                         7.69
ARIN Region origin ASes announcing only one prefix:                5213
ARIN Region transit ASes present in the Internet Routing Table:    1336
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               735487520
    Equivalent to 43 /8s, 214 /16s and 166 /24s
    Percentage of available ARIN address space announced:          64.5

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
                       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,  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, 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:                     71135
    Total RIPE prefixes after maximum aggregation:                41584
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            64228
    Unique aggregates announced from the RIPE address blocks:     42817
RIPE Region origin ASes present in the Internet Routing Table:    14007
    RIPE Prefixes per ASN:                                         4.59
RIPE Region origin ASes announcing only one prefix:                7277
RIPE Region transit ASes present in the Internet Routing Table:    2094
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               414369024
    Equivalent to 24 /8s, 178 /16s and 197 /24s
    Percentage of available RIPE address space announced:          77.2

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:                   27183
    Total LACNIC prefixes after maximum aggregation:               6541
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:          25544
    Unique aggregates announced from the LACNIC address blocks:   13806
LACNIC Region origin ASes present in the Internet Routing Table:   1232
    LACNIC Prefixes per ASN:                                      20.73
LACNIC Region origin ASes announcing only one prefix:               396
LACNIC Region transit ASes present in the Internet Routing Table:   202
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        20
Number of LACNIC addresses announced to Internet:              70307584
    Equivalent to 4 /8s, 48 /16s and 207 /24s
    Percentage of available LACNIC address space announced:        69.8

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:                   6246
    Total AfriNIC prefixes after maximum aggregation:              1788
    AfriNIC Deaggregation factor:                                  3.49
Prefixes being announced from the AfriNIC address blocks:          4629
    Unique aggregates announced from the AfriNIC address blocks:   1565
AfriNIC Region origin ASes present in the Internet Routing Table:   337
    AfriNIC Prefixes per ASN:                                     13.74
AfriNIC Region origin ASes announcing only one prefix:               92
AfriNIC Region transit ASes present in the Internet Routing Table:   75
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:             14803712
    Equivalent to 0 /8s, 225 /16s and 227 /24s
    Percentage of available AfriNIC address space announced:       44.1

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     1857       7510         470   Korea Telecom (KIX)
 4755     1310        303         137   TATA Communications formerly 
17488     1273        131         140   Hathway IP Over Cable Interne
18101     1079        220          37   Reliance Infocom Ltd Internet
 4134     1020      19605         398   CHINANET-BACKBONE
 9583      986         72         491   Sify Limited
 7545      931        198          98   TPG Internet Pty Ltd
17974      880        272          54   PT TELEKOMUNIKASI INDONESIA
 9829      839        683          24   BSNL National Internet Backbo
24560      837        299         172   Bharti Airtel Ltd., Telemedia

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     4149       3875         316   bellsouth.net, inc. 
 4323     3783       1088         395   Time Warner Telecom
 1785     1817        699         132   PaeTec Communications, Inc.
 7018     1593       5778        1029   AT&T WorldNet Services
20115     1542       1490         671   Charter Communications 
 2386     1292        616         917   AT&T Data Communications Serv
 3356     1203      10929         425   Level 3 Communications, LLC 
11492     1128        222          14   Cable One 
22773     1125       2600          66   Cox Communications, Inc.
 6478     1103        241         262   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
35805      475         40           5   United Telecom of Georgia
 3292      451       1904         395   TDC Tele Danmark
30890      439         99         205   Evolva Telecom
  702      422       1821         336   UUNET - Commercial IP service
 8551      397        353          37   Bezeq International
 8866      374        110          24   Bulgarian Telecommunication C
 3320      361       7068         308   Deutsche Telekom AG
 3215      351       3176         108   France Telecom Transpac
 3301      349       1412         310   TeliaNet Sweden
12479      320        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     1573       2886         240   UniNet S.A. de C.V. 
10620     1007        225         131   TVCABLE BOGOTA 
28573      840        674          85   NET Servicos de Comunicao S.A
 7303      671        356         100   Telecom Argentina Stet-France
22047      548        302          14   VTR PUNTO NET S.A. 
11830      472        308          59   Instituto Costarricense de El
 6503      446        163         185   AVANTEL, S.A. 
11172      444         99          69   Servicios Alestra S.A de C.V 
14117      438         29          12   Telefonica del Sur S.A. 
 3816      432        194          70   Empresa Nacional de Telecomun

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     1017        445           9   TEDATA
24863      723        143          53   LINKdotNET AS number
36992      282         75         172   Etisalat MISR
 3741      274        857         234   The Internet Solution 
 2018      190        197         111   Tertiary Education Network 
 6713      177        167          12   Itissalat Al-MAGHRIB
29571      167         19           9   Ci Telecom Autonomous system 
29975      134        506          15   Vodacom
33776      123          7          11   Starcomms Nigeria Limited
 5536      117          7          17   Internet Egypt Network

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     4149       3875         316   bellsouth.net, inc. 
 4323     3783       1088         395   Time Warner Telecom
 4766     1857       7510         470   Korea Telecom (KIX)
 1785     1817        699         132   PaeTec Communications, Inc.
 7018     1593       5778        1029   AT&T WorldNet Services
 8151     1573       2886         240   UniNet S.A. de C.V. 
20115     1542       1490         671   Charter Communications 
 4755     1310        303         137   TATA Communications formerly 
 2386     1292        616         917   AT&T Data Communications Serv
17488     1273        131         140   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
 4323      3783        3388      Time Warner Telecom
 1785      1817        1685      PaeTec Communications, Inc.
 4766      1857        1387      Korea Telecom (KIX)
 8151      1573        1333      UniNet S.A. de C.V. 
 4755      1310        1173      TATA Communications formerly 
17488      1273        1133      Hathway IP Over Cable Interne
11492      1128        1114      Cable One 
22773      1125        1059      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
18101      1079        1042      Reliance Infocom Ltd Internet

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        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.154.0/23        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.155.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED   12.39.159.0/24        7018       AT&T WorldNet Servic
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
2.0.0.0/16           12654     RIPE NCC RIS Project
2.1.0.0/21           12654     RIPE NCC RIS Project
2.1.24.0/24          12654     RIPE NCC RIS Project
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
46.0.0.0/16          12654     RIPE NCC RIS Project
46.1.0.0/21          12654     RIPE NCC RIS Project
46.1.24.0/24         12654     RIPE NCC RIS Project
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        /8:21       /9:10      /10:25      /11:66      /12:183     
/13:385     /14:660     /15:1243    /16:10875   /17:5102    /18:8646    
/19:17799   /20:21717   /21:21723   /22:28019   /23:28196   /24:161741  
/25:928     /26:1160    /27:585     /28:215     /29:9       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2707          4149      bellsouth.net, inc. 
 4323     2359          3783      Time Warner Telecom
 4766     1475          1857      Korea Telecom (KIX)
 1785     1285          1817      PaeTec Communications, Inc.
17488     1049          1273      Hathway IP Over Cable Interne
11492     1048          1128      Cable One 
18566     1040          1059      Covad Communications 
 7018      960          1593      AT&T WorldNet Services
18101      958          1079      Reliance Infocom Ltd Internet
 8452      913          1017      TEDATA

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

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

   2:1         4:13        8:234      12:2012     13:10       15:22     
  16:3        17:8        20:37       24:1301     32:49       38:642    
  40:99       41:1910     44:3        46:1        47:26       52:6      
  55:2        56:2        57:23       58:632      59:637      60:390    
  61:1100     62:977      63:2027     64:3796     65:2360     66:4102   
  67:1813     68:1052     69:2842     70:690      71:227      72:1874   
  73:2        74:2073     75:232      76:354      77:827      78:580    
  79:408      80:968      81:787      82:450      83:438      84:561    
  85:1003     86:383      87:706      88:418      89:1537     90:67     
  91:2686     92:413      93:1153     94:1287     95:794      96:208    
  97:294      98:493      99:23      100:1       109:235     110:265    
 111:418     112:184     113:225     114:309     115:513     116:1042   
 117:609     118:373     119:809     120:142     121:839     122:1376   
 123:834     124:1076    125:1298    128:198     129:203     130:138    
 131:461     132:82      133:16      134:195     135:41      136:222    
 137:172     138:235     139:80      140:464     141:123     142:375    
 143:348     144:391     145:51      146:417     147:179     148:566    
 149:195     150:146     151:171     152:248     153:165     154:2      
 155:271     156:178     157:330     158:97      159:355     160:304    
 161:176     162:272     163:187     164:311     165:470     166:493    
 167:388     168:759     169:157     170:568     171:48      172:2      
 173:444     174:530     175:26      180:284     183:212     184:3      
 186:261     187:211     188:1263    189:613     190:3444    192:5727   
 193:4410    194:3354    195:2778    196:1187    198:3559    199:3385   
 200:5295    201:1467    202:8087    203:8315    204:3996    205:2167   
 206:2420    207:3062    208:3898    209:3407    210:2531    211:1177   
 212:1648    213:1643    214:256     215:61      216:4441    217:1471   
 218:495     219:444     220:1129    221:465     222:309    

End of report




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