Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Nov 6 12:32:04 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 07 Nov, 2009

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

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

BGP routing table entries examined:                              301614
    Prefixes after maximum aggregation:                          141503
    Deaggregation factor:                                          2.13
    Unique aggregates announced to Internet:                     149533
Total ASes present in the Internet Routing Table:                 32604
    Prefixes per ASN:                                              9.25
Origin-only ASes present in the Internet Routing Table:           28347
Origin ASes announcing only one prefix:                           13795
Transit ASes present in the Internet Routing Table:                4257
Transit-only ASes present in the Internet Routing Table:            102
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      30
    Max AS path prepend of ASN (12026)                               22
Prefixes from unregistered ASNs in the Routing Table:               620
    Unregistered ASNs in the Routing Table:                         126
Number of 32-bit ASNs allocated by the RIRs:                        312
Prefixes from 32-bit ASNs in the Routing Table:                     256
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            202
Number of addresses announced to Internet:                   2132041952
    Equivalent to 127 /8s, 20 /16s and 96 /24s
    Percentage of available address space announced:               57.5
    Percentage of allocated address space announced:               65.2
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               79.8
Total number of prefixes smaller than registry allocations:      144805

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

Prefixes being announced by APNIC Region ASes:                    72077
    Total APNIC prefixes after maximum aggregation:               25252
    APNIC Deaggregation factor:                                    2.85
Prefixes being announced from the APNIC address blocks:           68602
    Unique aggregates announced from the APNIC address blocks:    30421
APNIC Region origin ASes present in the Internet Routing Table:    3847
    APNIC Prefixes per ASN:                                       17.83
APNIC Region origin ASes announcing only one prefix:               1043
APNIC Region transit ASes present in the Internet Routing Table:    587
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         14
Number of APNIC addresses announced to Internet:              470541600
    Equivalent to 28 /8s, 11 /16s and 229 /24s
    Percentage of available APNIC address space announced:         80.1

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, 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:                    127441
    Total ARIN prefixes after maximum aggregation:                67221
    ARIN Deaggregation factor:                                     1.90
Prefixes being announced from the ARIN address blocks:           101848
    Unique aggregates announced from the ARIN address blocks:     38884
ARIN Region origin ASes present in the Internet Routing Table:    13330
    ARIN Prefixes per ASN:                                         7.64
ARIN Region origin ASes announcing only one prefix:                5159
ARIN Region transit ASes present in the Internet Routing Table:    1314
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:               714201088
    Equivalent to 42 /8s, 145 /16s and 216 /24s
    Percentage of available ARIN address space announced:          62.6

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:                     69537
    Total RIPE prefixes after maximum aggregation:                40772
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            62836
    Unique aggregates announced from the RIPE address blocks:     42111
RIPE Region origin ASes present in the Internet Routing Table:    13706
    RIPE Prefixes per ASN:                                         4.58
RIPE Region origin ASes announcing only one prefix:                7114
RIPE Region transit ASes present in the Internet Routing Table:    2051
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               403252160
    Equivalent to 24 /8s, 9 /16s and 35 /24s
    Percentage of available RIPE address space announced:          75.1

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:                   26058
    Total LACNIC prefixes after maximum aggregation:               6385
    LACNIC Deaggregation factor:                                   4.08
Prefixes being announced from the LACNIC address blocks:          24373
    Unique aggregates announced from the LACNIC address blocks:   13436
LACNIC Region origin ASes present in the Internet Routing Table:   1202
    LACNIC Prefixes per ASN:                                      20.28
LACNIC Region origin ASes announcing only one prefix:               382
LACNIC Region transit ASes present in the Internet Routing Table:   200
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        30
Number of LACNIC addresses announced to Internet:              68123136
    Equivalent to 4 /8s, 15 /16s and 122 /24s
    Percentage of available LACNIC address space announced:        67.7

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:                   6017
    Total AfriNIC prefixes after maximum aggregation:              1577
    AfriNIC Deaggregation factor:                                  3.82
Prefixes being announced from the AfriNIC address blocks:          4374
    Unique aggregates announced from the AfriNIC address blocks:   1588
AfriNIC Region origin ASes present in the Internet Routing Table:   330
    AfriNIC Prefixes per ASN:                                     13.25
AfriNIC Region origin ASes announcing only one prefix:               97
AfriNIC Region transit ASes present in the Internet Routing Table:   66
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:             12886016
    Equivalent to 0 /8s, 196 /16s and 160 /24s
    Percentage of available AfriNIC address space announced:       38.4

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     1771       7505         456   Korea Telecom (KIX)
17488     1360        140         125   Hathway IP Over Cable Interne
 4755     1271        293         147   TATA Communications formerly 
 9583     1096         86         530   Sify Limited
 4134     1010      19185         393   CHINANET-BACKBONE
18101      975        204          33   Reliance Infocom Ltd Internet
 7545      901        198          99   TPG Internet Pty Ltd
 9829      852        664          24   BSNL National Internet Backbo
17974      822        252         104   PT TELEKOMUNIKASI INDONESIA
24560      793        291         171   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     4262       3883         313   bellsouth.net, inc. 
 4323     3723       1054         399   Time Warner Telecom
 1785     1785        715         140   PaeTec Communications, Inc.
 7018     1572       5837        1042   AT&T WorldNet Services
20115     1486       1481         669   Charter Communications 
 6478     1321        270         433   AT&T Worldnet Services 
 2386     1304        638         942   AT&T Data Communications Serv
 3356     1219      10964         440   Level 3 Communications, LLC 
11492     1137        206          13   Cable One 
22773     1101       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      515         98         209   Evolva Telecom
 3292      448       1906         393   TDC Tele Danmark
  702      415       1822         334   UUNET - Commercial IP service
 9198      397        138          12   Kazakhtelecom Data Network Ad
35805      384         40           5   United Telecom of Georgia
 8866      364        110          23   Bulgarian Telecommunication C
 3320      354       7067         302   Deutsche Telekom AG
 3215      349       3144         111   France Telecom Transpac
 3301      348       1412         305   TeliaNet Sweden
 9121      319       1698          26   TTnet 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     1556       2898         236   UniNet S.A. de C.V. 
10620     1032        228         102   TVCABLE BOGOTA 
28573      797        661          90   NET Servicos de Comunicao S.A
 7303      661        349          97   Telecom Argentina Stet-France
22047      546        302          14   VTR PUNTO NET S.A. 
11830      475        310          61   Instituto Costarricense de El
11172      444         99          70   Servicios Alestra S.A de C.V 
14117      437         29          11   Telefonica del Sur S.A. 
 7738      430        858          29   Telecomunicacoes da Bahia S.A
 6471      422         96          31   ENTEL CHILE 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      949        188           7   TEDATA
24863      940         98          71   LINKdotNET AS number
 3741      274        857         234   The Internet Solution 
 2018      194        188         117   Tertiary Education Network 
 6713      176        167          12   Itissalat Al-MAGHRIB
29571      145         15           8   Ci Telecom Autonomous system 
33776      124          7          11   Starcomms Nigeria Limited
 5536      122          8          13   Internet Egypt Network
 5713      116        508          67   Telkom SA Ltd 
20858      109         34           6   EgyNet

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     4262       3883         313   bellsouth.net, inc. 
 4323     3723       1054         399   Time Warner Telecom
 1785     1785        715         140   PaeTec Communications, Inc.
 4766     1771       7505         456   Korea Telecom (KIX)
 7018     1572       5837        1042   AT&T WorldNet Services
 8151     1556       2898         236   UniNet S.A. de C.V. 
20115     1486       1481         669   Charter Communications 
17488     1360        140         125   Hathway IP Over Cable Interne
 6478     1321        270         433   AT&T Worldnet Services 
 2386     1304        638         942   AT&T Data Communications Serv

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

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

  ASN   No of nets  Net Savings Description
 4323      3723        3324      Time Warner Telecom
 1785      1785        1645      PaeTec Communications, Inc.
 8151      1556        1320      UniNet S.A. de C.V. 
 4766      1771        1315      Korea Telecom (KIX)
17488      1360        1235      Hathway IP Over Cable Interne
 4755      1271        1124      TATA Communications formerly 
11492      1137        1124      Cable One 
18566      1062        1052      Covad Communications 
22773      1101        1035      Cox Communications, Inc.
18101       975         942      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   12.39.159.0/24        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
41.64.0.0/15         15475     Nile Online
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

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      /12:177     
/13:360     /14:639     /15:1217    /16:10738   /17:4943    /18:8503    
/19:17557   /20:21191   /21:21157   /22:27429   /23:27278   /24:157443  
/25:945     /26:1125    /27:563     /28:203     /29:10      /30:8       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2788          4262      bellsouth.net, inc. 
 4323     2351          3723      Time Warner Telecom
 4766     1436          1771      Korea Telecom (KIX)
 1785     1249          1785      PaeTec Communications, Inc.
17488     1136          1360      Hathway IP Over Cable Interne
11492     1061          1137      Cable One 
18566     1043          1062      Covad Communications 
 9583      948          1096      Sify Limited
 7018      944          1572      AT&T WorldNet Services
10620      937          1032      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        8:232      12:2137     13:7        15:22     
  16:3        17:5        20:36       24:1242     32:49       34:2      
  38:609      40:99       41:1737     43:1        44:2        46:1      
  47:21       52:6        55:2        56:2        57:23       58:622    
  59:611      60:443      61:987      62:966      63:1998     64:3669   
  65:2367     66:4088     67:1769     68:991      69:2781     70:590    
  71:153      72:1730     73:2        74:1981     75:184      76:362    
  77:859      78:581      79:376      80:939      81:818      82:480    
  83:440      84:542      85:1011     86:375      87:695      88:425    
  89:1499     90:52       91:2635     92:420      93:1180     94:1269   
  95:810      96:191      97:273      98:386      99:30      109:114    
 110:267     111:454     112:145     113:162     114:282     115:420    
 116:1005    117:589     118:346     119:786     120:127     121:702    
 122:1301    123:782     124:1054    125:1347    128:221     129:218    
 130:130     131:426     132:76      133:16      134:186     135:43     
 136:232     137:167     138:179     139:83      140:439     141:122    
 142:391     143:348     144:360     145:50      146:393     147:170    
 148:553     149:200     150:150     151:172     152:212     153:159    
 154:2       155:273     156:168     157:308     158:93      159:358    
 160:293     161:173     162:279     163:157     164:278     165:466    
 166:487     167:392     168:750     169:162     170:552     171:42     
 172:1       173:387     174:390     175:1       178:1       180:166    
 182:1       184:1       186:157     187:187     188:1259    189:622    
 190:3188    192:5746    193:4269    194:3321    195:2756    196:1167   
 198:3567    199:3356    200:5182    201:1351    202:7883    203:8231   
 204:3929    205:2144    206:2403    207:2998    208:3980    209:3428   
 210:2541    211:1145    212:1646    213:1629    214:164     215:39     
 216:4427    217:1335    218:471     219:436     220:1138    221:452    
 222:303    

End of report




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