Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Nov 19 13:10:00 CST 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.rand.apnic.net.

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 20 Nov, 2010

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

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

BGP routing table entries examined:                              337920
    Prefixes after maximum aggregation:                          153662
    Deaggregation factor:                                          2.20
    Unique aggregates announced to Internet:                     165745
Total ASes present in the Internet Routing Table:                 35314
    Prefixes per ASN:                                              9.57
Origin-only ASes present in the Internet Routing Table:           30423
Origin ASes announcing only one prefix:                           14892
Transit ASes present in the Internet Routing Table:                4891
Transit-only ASes present in the Internet Routing Table:            118
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      31
    Max AS path prepend of ASN (36992)                               29
Prefixes from unregistered ASNs in the Routing Table:               374
    Unregistered ASNs in the Routing Table:                         168
Number of 32-bit ASNs allocated by the RIRs:                        901
Prefixes from 32-bit ASNs in the Routing Table:                       4
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            198
Number of addresses announced to Internet:                   2301671776
    Equivalent to 137 /8s, 48 /16s and 185 /24s
    Percentage of available address space announced:               62.1
    Percentage of allocated address space announced:               65.4
    Percentage of available address space allocated:               95.0
    Percentage of address space in use by end-sites:               85.6
Total number of prefixes smaller than registry allocations:      139129

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

Prefixes being announced by APNIC Region ASes:                    82883
    Total APNIC prefixes after maximum aggregation:               28130
    APNIC Deaggregation factor:                                    2.95
Prefixes being announced from the APNIC address blocks:           79793
    Unique aggregates announced from the APNIC address blocks:    34792
APNIC Region origin ASes present in the Internet Routing Table:    4240
    APNIC Prefixes per ASN:                                       18.82
APNIC Region origin ASes announcing only one prefix:               1191
APNIC Region transit ASes present in the Internet Routing Table:    683
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              564159264
    Equivalent to 33 /8s, 160 /16s and 99 /24s
    Percentage of available APNIC address space announced:         76.4

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,  36/8,  42/8,  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:                    137691
    Total ARIN prefixes after maximum aggregation:                71142
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           108854
    Unique aggregates announced from the ARIN address blocks:     43801
ARIN Region origin ASes present in the Internet Routing Table:    14049
    ARIN Prefixes per ASN:                                         7.75
ARIN Region origin ASes announcing only one prefix:                5384
ARIN Region transit ASes present in the Internet Routing Table:    1492
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          23
Number of ARIN addresses announced to Internet:               740892160
    Equivalent to 44 /8s, 41 /16s and 30 /24s
    Percentage of available ARIN address space announced:          63.1

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,  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:                     77905
    Total RIPE prefixes after maximum aggregation:                45024
    RIPE Deaggregation factor:                                     1.73
Prefixes being announced from the RIPE address blocks:            71405
    Unique aggregates announced from the RIPE address blocks:     46773
RIPE Region origin ASes present in the Internet Routing Table:    15029
    RIPE Prefixes per ASN:                                         4.75
RIPE Region origin ASes announcing only one prefix:                7745
RIPE Region transit ASes present in the Internet Routing Table:    2327
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          30
Number of RIPE addresses announced to Internet:               444617152
    Equivalent to 26 /8s, 128 /16s and 81 /24s
    Percentage of available RIPE address space announced:          77.9

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:                   31585
    Total LACNIC prefixes after maximum aggregation:               7363
    LACNIC Deaggregation factor:                                   4.29
Prefixes being announced from the LACNIC address blocks:          30236
    Unique aggregates announced from the LACNIC address blocks:   15369
LACNIC Region origin ASes present in the Internet Routing Table:   1392
    LACNIC Prefixes per ASN:                                      21.72
LACNIC Region origin ASes announcing only one prefix:               437
LACNIC Region transit ASes present in the Internet Routing Table:   245
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              77683968
    Equivalent to 4 /8s, 161 /16s and 93 /24s
    Percentage of available LACNIC address space announced:        57.9

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:                   7617
    Total AfriNIC prefixes after maximum aggregation:              1883
    AfriNIC Deaggregation factor:                                  4.05
Prefixes being announced from the AfriNIC address blocks:          5929
    Unique aggregates announced from the AfriNIC address blocks:   1759
AfriNIC Region origin ASes present in the Internet Routing Table:   422
    AfriNIC Prefixes per ASN:                                     14.05
AfriNIC Region origin ASes announcing only one prefix:              135
AfriNIC Region transit ASes present in the Internet Routing Table:   93
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC addresses announced to Internet:             21482496
    Equivalent to 1 /8s, 71 /16s and 204 /24s
    Percentage of available AfriNIC address space announced:       42.7

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 105/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1874       9470         520   Korea Telecom (KIX)
 7545     1437        299          78   TPG Internet Pty Ltd
 4755     1389        383         157   TATA Communications formerly 
17488     1365        157         115   Hathway IP Over Cable Interne
17974     1312        427          27   PT TELEKOMUNIKASI INDONESIA
24560     1057        309         168   Bharti Airtel Ltd., Telemedia
 9583     1028         75         487   Sify Limited
 4808      983       1722         267   CNCGROUP IP network: China169
18101      906        116         140   Reliance Infocom Ltd Internet
 9829      835        695          30   BSNL National Internet Backbo

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

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3748       3906         277   bellsouth.net, inc. 
 4323     2653       1104         402   Time Warner Telecom
19262     1838       4866         283   Verizon Global Networks 
 1785     1802        697         130   PaeTec Communications, Inc.
20115     1512       1532         640   Charter Communications 
 7018     1406       5659         900   AT&T WorldNet Services
 6478     1402        283         104   AT&T Worldnet Services 
 2386     1310        556         929   AT&T Data Communications Serv
11492     1258        233          66   Cable One 
22773     1252       2863          69   Cox Communications, Inc.

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

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3292      446       2026         388   TDC Tele Danmark
 8866      435        133          25   Bulgarian Telecommunication C
 8551      400        353          46   Bezeq International
34984      397         92         191   BILISIM TELEKOM
  702      396       1865         310   UUNET - Commercial IP service
 3301      382       1696         336   TeliaNet Sweden
 3320      379       7316         332   Deutsche Telekom AG
12479      378        576           5   Uni2 Autonomous System
30890      374         79         208   Evolva Telecom
31148      354         18          85   FreeNet ISP

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

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6503     2011        277         361   AVANTEL, S.A. 
 8151     1345       2623         366   UniNet S.A. de C.V. 
10620     1336        249         156   TVCABLE BOGOTA 
28573     1164        928          84   NET Servicos de Comunicao S.A
 7303      827        440         105   Telecom Argentina Stet-France
14420      572         48          77   CORPORACION NACIONAL DE TELEC
22047      563        310          15   VTR PUNTO NET S.A. 
 3816      487        212          95   Empresa Nacional de Telecomun
 7738      478        922          30   Telecomunicacoes da Bahia S.A
14117      451         32          29   Telefonica del Sur S.A. 

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

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8452     1068        445          10   TEDATA
24863      741        147          39   LINKdotNET AS number
36992      652        278         160   Etisalat MISR
 3741      265        923         227   The Internet Solution 
 6713      203        199          12   Itissalat Al-MAGHRIB
29571      200         19          11   Ci Telecom Autonomous system 
 2018      197        277          64   Tertiary Education Network 
33776      195         12          14   Starcomms Nigeria Limited
24835      193         78          10   RAYA Telecom - Egypt
16637      152        440          89   MTN Network Solutions

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

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3748       3906         277   bellsouth.net, inc. 
 4323     2653       1104         402   Time Warner Telecom
 6503     2011        277         361   AVANTEL, S.A. 
 4766     1874       9470         520   Korea Telecom (KIX)
19262     1838       4866         283   Verizon Global Networks 
 1785     1802        697         130   PaeTec Communications, Inc.
20115     1512       1532         640   Charter Communications 
 7545     1437        299          78   TPG Internet Pty Ltd
 7018     1406       5659         900   AT&T WorldNet Services
 6478     1402        283         104   AT&T Worldnet Services 

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

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

  ASN   No of nets  Net Savings Description
 4323      2653        2251      Time Warner Telecom
 1785      1802        1672      PaeTec Communications, Inc.
 6503      2011        1650      AVANTEL, S.A. 
19262      1838        1555      Verizon Global Networks 
 7545      1437        1359      TPG Internet Pty Ltd
 4766      1874        1354      Korea Telecom (KIX)
 6478      1402        1298      AT&T Worldnet Services 
17974      1312        1285      PT TELEKOMUNIKASI INDONESIA
17488      1365        1250      Hathway IP Over Cable Interne
 4755      1389        1232      TATA Communications formerly 

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

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

Bad AS  Designation  Network              Transit AS  Description
13329   UNALLOCATED  8.19.99.0/24          3356       Level 3 Communicatio
33257   UNALLOCATED  8.20.94.0/24          3356       Level 3 Communicatio
12235   UNALLOCATED  8.28.128.0/20        40498       New Mexico Lambda Ra
23347   UNALLOCATED  8.225.222.0/24        3356       Level 3 Communicatio
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        4323       Time Warner Telecom
13746   UNALLOCATED  12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.25.107.0/24        4323       Time Warner Telecom
26973   UNALLOCATED  12.39.152.0/24        7018       AT&T WorldNet Servic

Complete listing at http://thyme.rand.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<<
45.127.0.0/16        13767     NetworkTwo Communications Gro
46.22.0.0/20         30910     TAGNet Autonomous System
46.182.16.0/21       13270     DDKOM Autonomous System
46.187.0.0/17        42420     Internet Center Ltd.
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 

Complete listing at http://thyme.rand.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      /11:69      /12:207     
/13:423     /14:750     /15:1351    /16:11398   /17:5576    /18:9342    
/19:18637   /20:23989   /21:24018   /22:31685   /23:30550   /24:177021  
/25:995     /26:1087    /27:586     /28:161     /29:12      /30:2       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2313          3748      bellsouth.net, inc. 
 6503     1763          2011      AVANTEL, S.A. 
 4323     1432          2653      Time Warner Telecom
 6478     1361          1402      AT&T Worldnet Services 
10620     1228          1336      TVCABLE BOGOTA 
11492     1215          1258      Cable One 
 1785     1080          1802      PaeTec Communications, Inc.
18566     1073          1092      Covad Communications 
 7011     1059          1160      Citizens Utilities 
 8452      961          1068      TEDATA

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

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

   1:99        2:15        4:13        8:314      12:2023     13:6      
  14:58       15:18       16:3        17:8        20:9        24:1413   
  27:443      31:1        32:61       33:8        34:2        36:1      
  38:718      40:101      41:2631     42:1        44:3        46:262    
  47:10       49:16       50:7        52:12       55:6        56:2      
  57:29       58:848      59:504      60:500      61:1138     62:1006   
  63:1953     64:3724     65:2328     66:4077     67:1810     68:1126   
  69:2893     70:717      71:381      72:1917     73:2        74:2278   
  75:294      76:327      77:865      78:672      79:429      80:1059   
  81:778      82:499      83:439      84:679      85:1015     86:483    
  87:699      88:331      89:1571     90:121      91:3202     92:448    
  93:998      94:1092     95:710      96:404      97:228      98:674    
  99:33      101:3       107:1       108:69      109:774     110:417    
 111:655     112:308     113:317     114:477     115:626     116:1130   
 117:660     118:572     119:1010    120:168     121:713     122:1599   
 123:963     124:1235    125:1272    128:228     129:152     130:172    
 131:554     132:239     133:20      134:209     135:46      136:204    
 137:143     138:284     139:108     140:475     141:195     142:348    
 143:524     144:503     145:54      146:430     147:169     148:671    
 149:331     150:149     151:231     152:294     153:175     154:3      
 155:363     156:167     157:342     158:121     159:366     160:311    
 161:199     162:276     163:166     164:435     165:331     166:466    
 167:429     168:702     169:150     170:719     171:63      172:2      
 173:1109    174:439     175:250     176:1       178:657     180:702    
 182:256     183:244     184:182     186:813     187:881     188:887    
 189:1590    190:4225    192:5775    193:4795    194:3466    195:2872   
 196:1185    197:1       198:3538    199:3644    200:5520    201:1640   
 202:8224    203:8325    204:4036    205:2346    206:2559    207:3023   
 208:3875    209:3457    210:2539    211:1296    212:1795    213:1712   
 214:693     215:63      216:4745    217:1604    218:565     219:401    
 220:1222    221:422     222:337     223:77     

End of report




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