Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 6 13:11:58 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 07 Aug, 2010

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

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

BGP routing table entries examined:                              327570
    Prefixes after maximum aggregation:                          150699
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     160252
Total ASes present in the Internet Routing Table:                 34482
    Prefixes per ASN:                                              9.50
Origin-only ASes present in the Internet Routing Table:           29935
Origin ASes announcing only one prefix:                           14513
Transit ASes present in the Internet Routing Table:                4547
Transit-only ASes present in the Internet Routing Table:             99
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:               486
    Unregistered ASNs in the Routing Table:                         210
Number of 32-bit ASNs allocated by the RIRs:                        155
Prefixes from 32-bit ASNs in the Routing Table:                     893
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:          61843
Number of addresses announced to Internet:                   2251423360
    Equivalent to 134 /8s, 49 /16s and 254 /24s
    Percentage of available address space announced:               60.7
    Percentage of allocated address space announced:               65.5
    Percentage of available address space allocated:               92.8
    Percentage of address space in use by end-sites:               69.2
Total number of prefixes smaller than registry allocations:      132801

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

Prefixes being announced by APNIC Region ASes:                    79486
    Total APNIC prefixes after maximum aggregation:               27320
    APNIC Deaggregation factor:                                    2.91
Prefixes being announced from the APNIC address blocks:           76404
    Unique aggregates announced from the APNIC address blocks:    33692
APNIC Region origin ASes present in the Internet Routing Table:    4152
    APNIC Prefixes per ASN:                                       18.40
APNIC Region origin ASes announcing only one prefix:               1160
APNIC Region transit ASes present in the Internet Routing Table:    635
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              538001952
    Equivalent to 32 /8s, 17 /16s and 66 /24s
    Percentage of available APNIC address space announced:         80.2

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:                    134936
    Total ARIN prefixes after maximum aggregation:                69682
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           107823
    Unique aggregates announced from the ARIN address blocks:     42279
ARIN Region origin ASes present in the Internet Routing Table:    13814
    ARIN Prefixes per ASN:                                         7.81
ARIN Region origin ASes announcing only one prefix:                5292
ARIN Region transit ASes present in the Internet Routing Table:    1355
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               730821152
    Equivalent to 43 /8s, 143 /16s and 114 /24s
    Percentage of available ARIN address space announced:          62.2

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:                     75200
    Total RIPE prefixes after maximum aggregation:                43599
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:             6738
    Unique aggregates announced from the RIPE address blocks:      3805
RIPE Region origin ASes present in the Internet Routing Table:    14634
    RIPE Prefixes per ASN:                                         0.46
RIPE Region origin ASes announcing only one prefix:                7528
RIPE Region transit ASes present in the Internet Routing Table:    2193
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:                64040704
    Equivalent to 3 /8s, 209 /16s and 47 /24s
    Percentage of available RIPE address space announced:          11.2

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,  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:                   29487
    Total LACNIC prefixes after maximum aggregation:               7006
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:          27982
    Unique aggregates announced from the LACNIC address blocks:   14984
LACNIC Region origin ASes present in the Internet Routing Table:   1322
    LACNIC Prefixes per ASN:                                      21.17
LACNIC Region origin ASes announcing only one prefix:               410
LACNIC Region transit ASes present in the Internet Routing Table:   235
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        20
Number of LACNIC addresses announced to Internet:              76265984
    Equivalent to 4 /8s, 139 /16s and 186 /24s
    Percentage of available LACNIC address space announced:        56.8

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:                   7316
    Total AfriNIC prefixes after maximum aggregation:              1874
    AfriNIC Deaggregation factor:                                  3.90
Prefixes being announced from the AfriNIC address blocks:          5640
    Unique aggregates announced from the AfriNIC address blocks:   1653
AfriNIC Region origin ASes present in the Internet Routing Table:   390
    AfriNIC Prefixes per ASN:                                     14.46
AfriNIC Region origin ASes announcing only one prefix:              123
AfriNIC Region transit ASes present in the Internet Routing Table:   85
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             19917568
    Equivalent to 1 /8s, 47 /16s and 235 /24s
    Percentage of available AfriNIC address space announced:       59.4

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       8409         490   Korea Telecom (KIX)
 4755     1479        298         162   TATA Communications formerly 
 7545     1374        234          87   TPG Internet Pty Ltd
17488     1343        149         127   Hathway IP Over Cable Interne
17974     1188        288          64   PT TELEKOMUNIKASI INDONESIA
 9583     1004         74         487   Sify Limited
24560      997        303         182   Bharti Airtel Ltd., Telemedia
 4808      900       1670         244   CNCGROUP IP network: China169
 9829      817        686          33   BSNL National Internet Backbo
 4134      786      22092         414   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     3867       3716         281   bellsouth.net, inc. 
 4323     2732       1100         394   Time Warner Telecom
19262     1944       4597         278   Verizon Global Networks 
 1785     1786        698         128   PaeTec Communications, Inc.
20115     1491       1526         652   Charter Communications 
 7018     1476       5733         949   AT&T WorldNet Services
 2386     1277        553         902   AT&T Data Communications Serv
 6478     1274        254         155   AT&T Worldnet Services 
22773     1177       2858          61   Cox Communications, Inc.
 3356     1164      10876         397   Level 3 Communications, LLC 

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      656         56           6   United Telecom of Georgia
 9198      499        202          13   Kazakhtelecom Data Network Ad
 3292      449       2026         390   TDC Tele Danmark
30890      444        111         206   Evolva Telecom
  702      414       1870         326   UUNET - Commercial IP service
 8866      403        117          18   Bulgarian Telecommunication C
 8551      401        353          46   Bezeq International
 3320      374       7328         325   Deutsche Telekom AG
 3301      372       1414         327   TeliaNet Sweden
34984      365         89         183   BILISIM TELEKOM

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     1527       3049         248   UniNet S.A. de C.V. 
10620     1089        244         149   TVCABLE BOGOTA 
28573     1020        818         100   NET Servicos de Comunicao S.A
 7303      786        408         101   Telecom Argentina Stet-France
 6503      720        178         222   AVANTEL, S.A. 
22047      553        310          15   VTR PUNTO NET S.A. 
14420      536         34          75   CORPORACION NACIONAL DE TELEC
 7738      477        922          30   Telecomunicacoes da Bahia S.A
 3816      475        197          95   Empresa Nacional de Telecomun
11172      447         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     1169        445          10   TEDATA
24863      726        147          39   LINKdotNET AS number
36992      647        278         187   Etisalat MISR
 3741      270        898         232   The Internet Solution 
33776      206         12          12   Starcomms Nigeria Limited
 2018      197        277          64   Tertiary Education Network 
 6713      195        186          16   Itissalat Al-MAGHRIB
29571      192         19          11   Ci Telecom Autonomous system 
24835      189         78           9   RAYA Telecom - Egypt
16637      140        440          95   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     3867       3716         281   bellsouth.net, inc. 
 4323     2732       1100         394   Time Warner Telecom
19262     1944       4597         278   Verizon Global Networks 
 4766     1857       8409         490   Korea Telecom (KIX)
 1785     1786        698         128   PaeTec Communications, Inc.
 8151     1527       3049         248   UniNet S.A. de C.V. 
20115     1491       1526         652   Charter Communications 
 4755     1479        298         162   TATA Communications formerly 
 7018     1476       5733         949   AT&T WorldNet Services
 7545     1374        234          87   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      2732        2338      Time Warner Telecom
19262      1944        1666      Verizon Global Networks 
 1785      1786        1658      PaeTec Communications, Inc.
 4766      1857        1367      Korea Telecom (KIX)
 4755      1479        1317      TATA Communications formerly 
 7545      1374        1287      TPG Internet Pty Ltd
 8151      1527        1279      UniNet S.A. de C.V. 
17488      1343        1216      Hathway IP Over Cable Interne
 8452      1169        1159      TEDATA
17974      1188        1124      PT TELEKOMUNIKASI INDONESIA

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
36178   UNALLOCATED  12.20.60.0/23         6128       Cablevision Systems 
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

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<<
41.223.188.0/24      22351     Intelsat 
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

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      /12:198     
/13:410     /14:717     /15:1299    /16:11183   /17:5376    /18:9216    
/19:18523   /20:23234   /21:23225   /22:30226   /23:29701   /24:170990  
/25:1048    /26:1192    /27:733     /28:118     /29:47      /30:6       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2471          3867      bellsouth.net, inc. 
 4766     1486          1857      Korea Telecom (KIX)
 4323     1394          2732      Time Warner Telecom
 1785     1245          1786      PaeTec Communications, Inc.
17488     1086          1343      Hathway IP Over Cable Interne
18566     1068          1087      Covad Communications 
 8452     1057          1169      TEDATA
11492     1048          1139      Cable One 
10620     1003          1089      TVCABLE BOGOTA 
19262      913          1944      Verizon Global Networks 

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

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

   1:39        2:2         4:13        8:293      12:2014     13:7      
  14:1        15:21       16:3        17:9        20:6        24:1433   
  27:277      31:1        32:59       33:22       38:688      40:98     
  41:2474     44:3        46:20       47:16       52:9        55:7      
  56:2        57:28       58:779      59:509      60:462      61:1069   
  62:1035     63:1968     64:3721     65:2336     66:4038     67:1827   
  68:1098     69:2760     70:741      71:444      72:1939     73:2      
  74:2302     75:253      76:324      77:906      78:619      79:435    
  80:986      81:778      82:505      83:452      84:694      85:1045   
  86:461      87:688      88:332      89:1557     90:97       91:2914   
  92:513      93:1006     94:1415     95:671      96:530      97:212    
  98:625      99:33      108:105     109:601     110:432     111:532    
 112:273     113:315     114:434     115:567     116:1092    117:653    
 118:482     119:899     120:137     121:724     122:1519    123:952    
 124:1128    125:1242    128:226     129:162     130:198     131:555    
 132:247     133:16      134:196     135:45      136:240     137:136    
 138:267     139:104     140:480     141:197     142:341     143:376    
 144:472     145:52      146:433     147:172     148:676     149:269    
 150:145     151:228     152:297     153:168     154:3       155:357    
 156:160     157:325     158:111     159:361     160:314     161:183    
 162:256     163:174     164:411     165:366     166:463     167:412    
 168:646     169:157     170:721     171:59      172:2       173:961    
 174:530     175:168     176:1       178:351     180:508     182:169    
 183:239     184:140     186:542     187:412     188:1045    189:737    
 190:3878    192:5753    193:4727    194:3401    195:2823    196:1179   
 198:3565    199:3513    200:5358    201:1582    202:7996    203:8273   
 204:4021    205:2400    206:2492    207:3071    208:3884    209:3468   
 210:2546    211:1311    212:1714    213:1664    214:660     215:69     
 216:4689    217:1514    218:503     219:380     220:1139    221:402    
 222:317     223:3      

End of report




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