Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Nov 27 12:36:54 CST 2009


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 28 Nov, 2009

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

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

BGP routing table entries examined:                              304342
    Prefixes after maximum aggregation:                          142008
    Deaggregation factor:                                          2.14
    Unique aggregates announced to Internet:                     150155
Total ASes present in the Internet Routing Table:                 32808
    Prefixes per ASN:                                              9.28
Origin-only ASes present in the Internet Routing Table:           28489
Origin ASes announcing only one prefix:                           13901
Transit ASes present in the Internet Routing Table:                4319
Transit-only ASes present in the Internet Routing Table:            103
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      39
    Max AS path prepend of ASN (22394)                               36
Prefixes from unregistered ASNs in the Routing Table:               690
    Unregistered ASNs in the Routing Table:                         150
Number of 32-bit ASNs allocated by the RIRs:                        338
Prefixes from 32-bit ASNs in the Routing Table:                     278
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            206
Number of addresses announced to Internet:                   2137469824
    Equivalent to 127 /8s, 103 /16s and 51 /24s
    Percentage of available address space announced:               57.7
    Percentage of allocated address space announced:               65.4
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               80.2
Total number of prefixes smaller than registry allocations:      146251

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

Prefixes being announced by APNIC Region ASes:                    72689
    Total APNIC prefixes after maximum aggregation:               25380
    APNIC Deaggregation factor:                                    2.86
Prefixes being announced from the APNIC address blocks:           69408
    Unique aggregates announced from the APNIC address blocks:    30885
APNIC Region origin ASes present in the Internet Routing Table:    3882
    APNIC Prefixes per ASN:                                       17.88
APNIC Region origin ASes announcing only one prefix:               1062
APNIC Region transit ASes present in the Internet Routing Table:    595
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         23
Number of APNIC addresses announced to Internet:              482336544
    Equivalent to 28 /8s, 191 /16s and 223 /24s
    Percentage of available APNIC address space announced:         79.9

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    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:                    128214
    Total ARIN prefixes after maximum aggregation:                67287
    ARIN Deaggregation factor:                                     1.91
Prefixes being announced from the ARIN address blocks:           102380
    Unique aggregates announced from the ARIN address blocks:     38817
ARIN Region origin ASes present in the Internet Routing Table:    13369
    ARIN Prefixes per ASN:                                         7.66
ARIN Region origin ASes announcing only one prefix:                5172
ARIN Region transit ASes present in the Internet Routing Table:    1330
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          39
Number of ARIN addresses announced to Internet:               731696160
    Equivalent to 43 /8s, 156 /16s and 204 /24s
    Percentage of available ARIN address space announced:          64.1

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:                     70605
    Total RIPE prefixes after maximum aggregation:                41017
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            63782
    Unique aggregates announced from the RIPE address blocks:     42335
RIPE Region origin ASes present in the Internet Routing Table:    13820
    RIPE Prefixes per ASN:                                         4.62
RIPE Region origin ASes announcing only one prefix:                7179
RIPE Region transit ASes present in the Internet Routing Table:    2082
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               405627328
    Equivalent to 24 /8s, 45 /16s and 97 /24s
    Percentage of available RIPE address space announced:          75.6

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:                   26457
    Total LACNIC prefixes after maximum aggregation:               6452
    LACNIC Deaggregation factor:                                   4.10
Prefixes being announced from the LACNIC address blocks:          24770
    Unique aggregates announced from the LACNIC address blocks:   13634
LACNIC Region origin ASes present in the Internet Routing Table:   1214
    LACNIC Prefixes per ASN:                                      20.40
LACNIC Region origin ASes announcing only one prefix:               394
LACNIC Region transit ASes present in the Internet Routing Table:   201
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        23
Number of LACNIC addresses announced to Internet:              68329472
    Equivalent to 4 /8s, 18 /16s and 160 /24s
    Percentage of available LACNIC address space announced:        67.9

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:                   5868
    Total AfriNIC prefixes after maximum aggregation:              1557
    AfriNIC Deaggregation factor:                                  3.77
Prefixes being announced from the AfriNIC address blocks:          4252
    Unique aggregates announced from the AfriNIC address blocks:   1436
AfriNIC Region origin ASes present in the Internet Routing Table:   333
    AfriNIC Prefixes per ASN:                                     12.77
AfriNIC Region origin ASes announcing only one prefix:               94
AfriNIC Region transit ASes present in the Internet Routing Table:   70
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             13325568
    Equivalent to 0 /8s, 203 /16s and 85 /24s
    Percentage of available AfriNIC address space announced:       39.7

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     1767       7507         461   Korea Telecom (KIX)
17488     1447        143         133   Hathway IP Over Cable Interne
 4755     1278        296         148   TATA Communications formerly 
 4134     1013      19459         395   CHINANET-BACKBONE
 9583     1007         75         495   Sify Limited
18101      984        204          35   Reliance Infocom Ltd Internet
 7545      911        198          98   TPG Internet Pty Ltd
17974      861        265          60   PT TELEKOMUNIKASI INDONESIA
 9829      848        664          24   BSNL National Internet Backbo
24560      806        293         175   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     4244       3879         311   bellsouth.net, inc. 
 4323     3751       1069         399   Time Warner Telecom
 1785     1780        714         136   PaeTec Communications, Inc.
 7018     1589       5808        1034   AT&T WorldNet Services
20115     1520       1483         666   Charter Communications 
 2386     1297        632         933   AT&T Data Communications Serv
 3356     1229      10966         447   Level 3 Communications, LLC 
 6478     1188        251         315   AT&T Worldnet Services 
11492     1142        222          14   Cable One 
22773     1123       2600          66   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
30890      514         98         207   Evolva Telecom
 9198      471        138          12   Kazakhtelecom Data Network Ad
35805      467         40           5   United Telecom of Georgia
 3292      448       1906         393   TDC Tele Danmark
  702      417       1837         335   UUNET - Commercial IP service
 8551      377        354          41   Bezeq International
 8866      371        110          23   Bulgarian Telecommunication C
 3320      358       7067         304   Deutsche Telekom AG
 3215      349       3144         111   France Telecom Transpac
 3301      347       1427         303   TeliaNet Sweden

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     1567       2899         233   UniNet S.A. de C.V. 
10620     1004        224         138   TVCABLE BOGOTA 
28573      814        666          82   NET Servicos de Comunicao S.A
 7303      664        350          95   Telecom Argentina Stet-France
22047      546        302          14   VTR PUNTO NET S.A. 
11830      474        308          59   Instituto Costarricense de El
11172      445         99          70   Servicios Alestra S.A de C.V 
14117      437         29          11   Telefonica del Sur S.A. 
 7738      431        858          29   Telecomunicacoes da Bahia S.A
 6503      424        162         184   AVANTEL, 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     1022        188           7   TEDATA
24863      753        130          46   LINKdotNET AS number
 3741      274        857         234   The Internet Solution 
 2018      190        188         118   Tertiary Education Network 
 6713      176        167          12   Itissalat Al-MAGHRIB
29975      134        506          15   Vodacom
29571      133         15           8   Ci Telecom Autonomous system 
33776      124          7          11   Starcomms Nigeria Limited
 5536      121          8          18   Internet Egypt Network
 5713      116        508          67   Telkom SA Ltd 

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     4244       3879         311   bellsouth.net, inc. 
 4323     3751       1069         399   Time Warner Telecom
 1785     1780        714         136   PaeTec Communications, Inc.
 4766     1767       7507         461   Korea Telecom (KIX)
 7018     1589       5808        1034   AT&T WorldNet Services
 8151     1567       2899         233   UniNet S.A. de C.V. 
20115     1520       1483         666   Charter Communications 
17488     1447        143         133   Hathway IP Over Cable Interne
 2386     1297        632         933   AT&T Data Communications Serv
 4755     1278        296         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      3751        3352      Time Warner Telecom
 1785      1780        1644      PaeTec Communications, Inc.
 8151      1567        1334      UniNet S.A. de C.V. 
17488      1447        1314      Hathway IP Over Cable Interne
 4766      1767        1306      Korea Telecom (KIX)
 4755      1278        1130      TATA Communications formerly 
11492      1142        1128      Cable One 
22773      1123        1057      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 8452      1022        1015      TEDATA

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   12.39.159.0/24        7018       AT&T WorldNet Servic
32326   UNALLOCATED   12.40.49.0/24         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        /8:20       /9:10      /10:25      /11:65      /12:178     
/13:363     /14:642     /15:1224    /16:10738   /17:4984    /18:8576    
/19:17619   /20:21420   /21:21367   /22:27577   /23:27485   /24:159184  
/25:923     /26:1129    /27:569     /28:217     /29:11      /30:8       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2776          4244      bellsouth.net, inc. 
 4323     2367          3751      Time Warner Telecom
 4766     1435          1767      Korea Telecom (KIX)
 1785     1247          1780      PaeTec Communications, Inc.
17488     1220          1447      Hathway IP Over Cable Interne
11492     1064          1142      Cable One 
18566     1040          1059      Covad Communications 
 7018      954          1589      AT&T WorldNet Services
 8452      920          1022      TEDATA
10620      909          1004      TVCABLE BOGOTA 

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

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

   2:1         4:14        8:236      12:2056     13:8        15:22     
  16:3        17:5        20:36       24:1269     32:49       34:2      
  38:621      40:99       41:1783     43:1        44:2        46:1      
  47:20       52:6        55:2        56:2        57:23       58:640    
  59:611      60:445      61:977      62:958      63:2005     64:3696   
  65:2365     66:4076     67:1782     68:1002     69:2817     70:630    
  71:156      72:1755     73:2        74:2014     75:188      76:355    
  77:849      78:601      79:388      80:944      81:815      82:475    
  83:439      84:528      85:1010     86:381      87:687      88:443    
  89:1576     90:63       91:2658     92:447      93:1153     94:1332   
  95:833      96:201      97:276      98:425      99:27      109:171    
 110:274     111:466     112:151     113:180     114:277     115:382    
 116:1086    117:594     118:366     119:802     120:139     121:702    
 122:1308    123:793     124:1056    125:1353    128:214     129:203    
 130:134     131:453     132:82      133:16      134:187     135:41     
 136:232     137:166     138:236     139:84      140:461     141:122    
 142:381     143:339     144:384     145:52      146:392     147:171    
 148:558     149:192     150:149     151:172     152:219     153:161    
 154:2       155:273     156:166     157:314     158:98      159:360    
 160:294     161:175     162:277     163:163     164:316     165:469    
 166:490     167:391     168:753     169:159     170:559     171:42     
 172:1       173:394     174:401     180:202     183:134     184:1      
 186:185     187:172     188:1354    189:635     190:3283    192:5736   
 193:4311    194:3354    195:2769    196:1181    198:3568    199:3385   
 200:5251    201:1408    202:7921    203:8267    204:3982    205:2156   
 206:2413    207:3042    208:3970    209:3396    210:2531    211:1152   
 212:1648    213:1614    214:245     215:57      216:4438    217:1360   
 218:474     219:419     220:1139    221:447     222:300    

End of report




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