Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 27 13:32:14 CDT 2010


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
CaribNOG and the RIPE Routing Working Group.

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 28 Aug, 2010

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

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

BGP routing table entries examined:                              329510
    Prefixes after maximum aggregation:                          151625
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     161906
Total ASes present in the Internet Routing Table:                 34686
    Prefixes per ASN:                                              9.50
Origin-only ASes present in the Internet Routing Table:           30086
Origin ASes announcing only one prefix:                           14608
Transit ASes present in the Internet Routing Table:                4600
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:                                      24
    Max AS path prepend of ASN (41664)                               21
Prefixes from unregistered ASNs in the Routing Table:              1590
    Unregistered ASNs in the Routing Table:                         797
Number of 32-bit ASNs allocated by the RIRs:                        748
Prefixes from 32-bit ASNs in the Routing Table:                     962
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            170
Number of addresses announced to Internet:                   2293803456
    Equivalent to 136 /8s, 184 /16s and 169 /24s
    Percentage of available address space announced:               61.9
    Percentage of allocated address space announced:               66.1
    Percentage of available address space allocated:               93.7
    Percentage of address space in use by end-sites:               84.5
Total number of prefixes smaller than registry allocations:      156020

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

Prefixes being announced by APNIC Region ASes:                    80080
    Total APNIC prefixes after maximum aggregation:               27494
    APNIC Deaggregation factor:                                    2.91
Prefixes being announced from the APNIC address blocks:           77020
    Unique aggregates announced from the APNIC address blocks:    33981
APNIC Region origin ASes present in the Internet Routing Table:    4178
    APNIC Prefixes per ASN:                                       18.43
APNIC Region origin ASes announcing only one prefix:               1167
APNIC Region transit ASes present in the Internet Routing Table:    640
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              541736480
    Equivalent to 32 /8s, 74 /16s and 62 /24s
    Percentage of available APNIC address space announced:         76.9

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,  49/8,  58/8,  59/8,
                        60/8,  61/8, 101/8, 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:                    135692
    Total ARIN prefixes after maximum aggregation:                69900
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           108438
    Unique aggregates announced from the ARIN address blocks:     42670
ARIN Region origin ASes present in the Internet Routing Table:    13878
    ARIN Prefixes per ASN:                                         7.81
ARIN Region origin ASes announcing only one prefix:                5319
ARIN Region transit ASes present in the Internet Routing Table:    1380
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               732630688
    Equivalent to 43 /8s, 171 /16s and 14 /24s
    Percentage of available ARIN address space announced:          62.4

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:                     75384
    Total RIPE prefixes after maximum aggregation:                44003
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            68841
    Unique aggregates announced from the RIPE address blocks:     45070
RIPE Region origin ASes present in the Internet Routing Table:    14722
    RIPE Prefixes per ASN:                                         4.68
RIPE Region origin ASes announcing only one prefix:                7583
RIPE Region transit ASes present in the Internet Routing Table:    2207
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               436405504
    Equivalent to 26 /8s, 3 /16s and 5 /24s
    Percentage of available RIPE address space announced:          76.5

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,  31/8,  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, 176/8, 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:                   29777
    Total LACNIC prefixes after maximum aggregation:               7078
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:          28269
    Unique aggregates announced from the LACNIC address blocks:   15311
LACNIC Region origin ASes present in the Internet Routing Table:   1338
    LACNIC Prefixes per ASN:                                      21.13
LACNIC Region origin ASes announcing only one prefix:               414
LACNIC Region transit ASes present in the Internet Routing Table:   237
Average LACNIC Region AS path length visible:                       3.9
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              76818560
    Equivalent to 4 /8s, 148 /16s and 40 /24s
    Percentage of available LACNIC address space announced:        57.2

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  177/8, 181/8, 186/8, 187/8, 189/8, 190/8, 200/8,
                       201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   7369
    Total AfriNIC prefixes after maximum aggregation:              1886
    AfriNIC Deaggregation factor:                                  3.91
Prefixes being announced from the AfriNIC address blocks:          5717
    Unique aggregates announced from the AfriNIC address blocks:   1722
AfriNIC Region origin ASes present in the Internet Routing Table:   397
    AfriNIC Prefixes per ASN:                                     14.40
AfriNIC Region origin ASes announcing only one prefix:              125
AfriNIC Region transit ASes present in the Internet Routing Table:   91
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             20112896
    Equivalent to 1 /8s, 50 /16s and 230 /24s
    Percentage of available AfriNIC address space announced:       59.9

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     1866       8412         498   Korea Telecom (KIX)
 4755     1482        302         162   TATA Communications formerly 
 7545     1385        234          86   TPG Internet Pty Ltd
17488     1342        153         130   Hathway IP Over Cable Interne
17974     1168        295          81   PT TELEKOMUNIKASI INDONESIA
 9583     1017         76         490   Sify Limited
24560      998        303         179   Bharti Airtel Ltd., Telemedia
 4808      917       1692         247   CNCGROUP IP network: China169
 9829      818        689          36   BSNL National Internet Backbo
 4134      785      22475         418   CHINANET-BACKBONE

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     3843       3668         277   bellsouth.net, inc. 
 4323     2701       1115         393   Time Warner Telecom
19262     1802       4626         276   Verizon Global Networks 
 1785     1791        698         131   PaeTec Communications, Inc.
20115     1493       1529         653   Charter Communications 
 7018     1470       5734         953   AT&T WorldNet Services
 6478     1308        274         118   AT&T Worldnet Services 
 2386     1289        554         907   AT&T Data Communications Serv
11492     1239        214         119   Cable One 
22773     1180       2858          61   Cox Communications, 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      449       2026         390   TDC Tele Danmark
30890      443         99         211   Evolva Telecom
  702      407       1870         324   UUNET - Commercial IP service
 8866      403        117          18   Bulgarian Telecommunication C
 8551      401        353          46   Bezeq International
 3320      376       7329         325   Deutsche Telekom AG
 3301      374       1416         329   TeliaNet Sweden
34984      367         89         185   BILISIM TELEKOM
12479      350        576           5   Uni2 Autonomous System
31148      326         17          80   FreeNet ISP

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     1526       3049         246   UniNet S.A. de C.V. 
10620     1102        246         148   TVCABLE BOGOTA 
28573     1025        833         111   NET Servicos de Comunicao S.A
 6503      835        187         257   AVANTEL, S.A. 
 7303      791        408         101   Telecom Argentina Stet-France
14420      553         35          76   CORPORACION NACIONAL DE TELEC
22047      551        310          15   VTR PUNTO NET S.A. 
 3816      477        210         100   Empresa Nacional de Telecomun
 7738      477        922          30   Telecomunicacoes da Bahia S.A
11172      445         99          76   Servicios Alestra S.A de C.V 

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     1145        445          10   TEDATA
24863      725        147          39   LINKdotNET AS number
36992      661        279         185   Etisalat MISR
 3741      267        907         225   The Internet Solution 
33776      209         12          12   Starcomms Nigeria Limited
 2018      197        277          64   Tertiary Education Network 
 6713      195        186          16   Itissalat Al-MAGHRIB
29571      193         19          11   Ci Telecom Autonomous system 
24835      190         78           9   RAYA Telecom - Egypt
16637      147        440          96   MTN Network Solutions

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     3843       3668         277   bellsouth.net, inc. 
 4323     2701       1115         393   Time Warner Telecom
 4766     1866       8412         498   Korea Telecom (KIX)
19262     1802       4626         276   Verizon Global Networks 
 1785     1791        698         131   PaeTec Communications, Inc.
 8151     1526       3049         246   UniNet S.A. de C.V. 
20115     1493       1529         653   Charter Communications 
 4755     1482        302         162   TATA Communications formerly 
 7018     1470       5734         953   AT&T WorldNet Services
 7545     1385        234          86   TPG Internet Pty Ltd

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

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

  ASN   No of nets  Net Savings Description
 4323      2701        2308      Time Warner Telecom
 1785      1791        1660      PaeTec Communications, Inc.
19262      1802        1526      Verizon Global Networks 
 4766      1866        1368      Korea Telecom (KIX)
 4755      1482        1320      TATA Communications formerly 
 7545      1385        1299      TPG Internet Pty Ltd
 8151      1526        1280      UniNet S.A. de C.V. 
17488      1342        1212      Hathway IP Over Cable Interne
 6478      1308        1190      AT&T Worldnet Services 
 8452      1145        1135      TEDATA

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

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

Bad AS  Designation  Network              Transit AS  Description
11946   UNALLOCATED  8.12.155.0/24        40913       Quality Technology S
33084   UNALLOCATED  8.15.195.0/24         3356       Level 3 Communicatio
16734   UNALLOCATED  8.18.204.0/24        26914       Global Netoptex, Inc
22015   UNALLOCATED  8.22.137.0/24        14989       Broadview Networks 
46856   UNALLOCATED  8.22.184.0/22         3561       Savvis
26169   UNALLOCATED  8.225.177.0/24       20225       TelJet 
32249   UNALLOCATED  8.225.178.0/24        3356       Level 3 Communicatio
16927   UNALLOCATED  12.0.252.0/23         7018       AT&T WorldNet Servic
46883   UNALLOCATED  12.4.222.0/24         7018       AT&T WorldNet Servic
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
31.0.0.0/16          12654     RIPE NCC RIS Project
31.1.0.0/21          12654     RIPE NCC RIS Project
31.1.24.0/24         12654     RIPE NCC RIS Project
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.189.0/24       6453     Teleglobe Inc. 
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

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      /11:67      /12:198     
/13:414     /14:721     /15:1314    /16:11254   /17:5413    /18:9271    
/19:18630   /20:23332   /21:23461   /22:30502   /23:29899   /24:171828  
/25:1059    /26:1198    /27:718     /28:115     /29:47      /30:6       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2459          3843      bellsouth.net, inc. 
 4766     1488          1866      Korea Telecom (KIX)
 4323     1365          2701      Time Warner Telecom
 1785     1254          1791      PaeTec Communications, Inc.
11492     1091          1239      Cable One 
17488     1084          1342      Hathway IP Over Cable Interne
18566     1068          1087      Covad Communications 
 8452     1036          1145      TEDATA
10620     1015          1102      TVCABLE BOGOTA 
24560      897           998      Bharti Airtel Ltd., Telemedia

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

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

   1:56        2:2         4:13        8:303      12:2014     13:8      
  14:1        15:21       16:3        17:9        20:7        24:1436   
  27:289      31:1        32:61       33:22       38:695      40:97     
  41:2521     44:3        46:45       47:16       52:12       55:7      
  56:2        57:28       58:801      59:503      60:460      61:1074   
  62:1086     63:1975     64:3740     65:2323     66:4032     67:1839   
  68:1122     69:2788     70:743      71:372      72:1940     73:2      
  74:2320     75:274      76:327      77:882      78:624      79:437    
  80:1038     81:804      82:503      83:510      84:691      85:1043   
  86:481      87:696      88:317      89:1532     90:97       91:2989   
  92:423      93:985      94:1161     95:679      96:489      97:217    
  98:621      99:34      108:64      109:651     110:456     111:556    
 112:279     113:314     114:451     115:573     116:1095    117:658    
 118:484     119:895     120:141     121:708     122:1540    123:955    
 124:1119    125:1242    128:226     129:158     130:199     131:540    
 132:247     133:17      134:195     135:45      136:236     137:136    
 138:264     139:105     140:476     141:197     142:344     143:351    
 144:471     145:52      146:427     147:170     148:679     149:305    
 150:153     151:233     152:299     153:169     154:3       155:361    
 156:165     157:328     158:118     159:358     160:315     161:183    
 162:269     163:167     164:416     165:369     166:467     167:423    
 168:654     169:158     170:722     171:61      172:2       173:1008   
 174:502     175:155     176:1       177:1       178:435     180:586    
 181:1       182:234     183:237     184:204     186:565     187:453    
 188:797     189:757     190:3978    192:5764    193:4754    194:3427   
 195:2788    196:1172    198:3577    199:3579    200:5430    201:1580   
 202:8055    203:8300    204:4010    205:2398    206:2534    207:3077   
 208:3887    209:3469    210:2561    211:1297    212:1754    213:1683   
 214:658     215:67      216:4775    217:1576    218:478     219:379    
 220:1140    221:388     222:290     223:7      

End of report




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