[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 30 18:11:06 UTC 2010


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 01 May, 2010

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

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

BGP routing table entries examined:                              320010
    Prefixes after maximum aggregation:                          147697
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     155292
Total ASes present in the Internet Routing Table:                 33885
    Prefixes per ASN:                                              9.44
Origin-only ASes present in the Internet Routing Table:           29405
Origin ASes announcing only one prefix:                           14332
Transit ASes present in the Internet Routing Table:                4480
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:                                      24
    Max AS path prepend of ASN (36992)                               22
Prefixes from unregistered ASNs in the Routing Table:               352
    Unregistered ASNs in the Routing Table:                         126
Number of 32-bit ASNs allocated by the RIRs:                        543
Prefixes from 32-bit ASNs in the Routing Table:                     598
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            189
Number of addresses announced to Internet:                   2235997952
    Equivalent to 133 /8s, 70 /16s and 159 /24s
    Percentage of available address space announced:               60.3
    Percentage of allocated address space announced:               66.3
    Percentage of available address space allocated:               90.9
    Percentage of address space in use by end-sites:               82.4
Total number of prefixes smaller than registry allocations:      153558

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

Prefixes being announced by APNIC Region ASes:                    76646
    Total APNIC prefixes after maximum aggregation:               26650
    APNIC Deaggregation factor:                                    2.88
Prefixes being announced from the APNIC address blocks:           73318
    Unique aggregates announced from the APNIC address blocks:    32160
APNIC Region origin ASes present in the Internet Routing Table:    4017
    APNIC Prefixes per ASN:                                       18.25
APNIC Region origin ASes announcing only one prefix:               1102
APNIC Region transit ASes present in the Internet Routing Table:    627
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              511561792
    Equivalent to 30 /8s, 125 /16s and 208 /24s
    Percentage of available APNIC address space announced:         76.2

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:                    133880
    Total ARIN prefixes after maximum aggregation:                68916
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           106725
    Unique aggregates announced from the ARIN address blocks:     40693
ARIN Region origin ASes present in the Internet Routing Table:    13659
    ARIN Prefixes per ASN:                                         7.81
ARIN Region origin ASes announcing only one prefix:                5267
ARIN Region transit ASes present in the Internet Routing Table:    1351
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               726007328
    Equivalent to 43 /8s, 69 /16s and 254 /24s
    Percentage of available ARIN address space announced:          61.8

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:                     73451
    Total RIPE prefixes after maximum aggregation:                42731
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            66426
    Unique aggregates announced from the RIPE address blocks:     43668
RIPE Region origin ASes present in the Internet Routing Table:    14406
    RIPE Prefixes per ASN:                                         4.61
RIPE Region origin ASes announcing only one prefix:                7449
RIPE Region transit ASes present in the Internet Routing Table:    2156
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               423767200
    Equivalent to 25 /8s, 66 /16s and 44 /24s
    Percentage of available RIPE address space announced:          78.9

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,  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:                   28441
    Total LACNIC prefixes after maximum aggregation:               6761
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:          26851
    Unique aggregates announced from the LACNIC address blocks:   13904
LACNIC Region origin ASes present in the Internet Routing Table:   1272
    LACNIC Prefixes per ASN:                                      21.11
LACNIC Region origin ASes announcing only one prefix:               409
LACNIC Region transit ASes present in the Internet Routing Table:   223
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        20
Number of LACNIC addresses announced to Internet:              72741888
    Equivalent to 4 /8s, 85 /16s and 244 /24s
    Percentage of available LACNIC address space announced:        72.3

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:                   6759
    Total AfriNIC prefixes after maximum aggregation:              1790
    AfriNIC Deaggregation factor:                                  3.78
Prefixes being announced from the AfriNIC address blocks:          5168
    Unique aggregates announced from the AfriNIC address blocks:   1463
AfriNIC Region origin ASes present in the Internet Routing Table:   353
    AfriNIC Prefixes per ASN:                                     14.64
AfriNIC Region origin ASes announcing only one prefix:              105
AfriNIC Region transit ASes present in the Internet Routing Table:   78
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       24
Number of AfriNIC addresses announced to Internet:             14544384
    Equivalent to 0 /8s, 221 /16s and 238 /24s
    Percentage of available AfriNIC address space announced:       43.3

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     1847       8406         480   Korea Telecom (KIX)
17488     1313        138         122   Hathway IP Over Cable Interne
 4755     1292        291         148   TATA Communications formerly 
 7545     1167        231         102   TPG Internet Pty Ltd
17974     1015        281          18   PT TELEKOMUNIKASI INDONESIA
 9583      993         73         489   Sify Limited
 4134      941      20454         398   CHINANET-BACKBONE
24560      888        304         170   Bharti Airtel Ltd., Telemedia
 4808      843       1589         215   CNCGROUP IP network: China169
 9829      808        680          36   BSNL National Internet Backbo

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     3977       3837         293   bellsouth.net, inc. 
 4323     3831       1116         404   Time Warner Telecom
 1785     1785        699         131   PaeTec Communications, Inc.
 7018     1555       5758         987   AT&T WorldNet Services
20115     1514       1501         660   Charter Communications 
 2386     1311        585         928   AT&T Data Communications Serv
 3356     1213      10920         422   Level 3 Communications, LLC 
 6478     1212        249         146   AT&T Worldnet Services 
22773     1148       2605          71   Cox Communications, Inc.
11492     1124        222          14   Cable One 

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      617         56           6   United Telecom of Georgia
 3292      448       1899         389   TDC Tele Danmark
30890      436         99         203   Evolva Telecom
  702      414       1869         330   UUNET - Commercial IP service
 8551      401        356          37   Bezeq International
 8866      395        117          18   Bulgarian Telecommunication C
 3301      367       1414         322   TeliaNet Sweden
 3320      365       7072         318   Deutsche Telekom AG
 3215      346       3218         102   France Telecom Transpac
12479      332        576           5   Uni2 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     1546       2965         242   UniNet S.A. de C.V. 
10620     1014        229         155   TVCABLE BOGOTA 
28573      931        739          92   NET Servicos de Comunicao S.A
 7303      720        372         104   Telecom Argentina Stet-France
 6503      548        171         212   AVANTEL, S.A. 
22047      546        310          15   VTR PUNTO NET S.A. 
18881      537        268          11   Global Village Telecom 
 7738      477        922          30   Telecomunicacoes da Bahia S.A
 3816      461        195          70   Empresa Nacional de Telecomun
14117      454         30          13   Telefonica del Sur 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     1007        189           9   TEDATA
24863      721        145          41   LINKdotNET AS number
36992      629        273         172   Etisalat MISR
 3741      273        852         232   The Internet Solution 
 2018      214        230         111   Tertiary Education Network 
33776      205         11          15   Starcomms Nigeria Limited
 6713      176        167          12   Itissalat Al-MAGHRIB
29571      172         19           9   Ci Telecom Autonomous system 
29975      133        506          14   Vodacom
 5536      114          8           3   Internet Egypt Network

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     3977       3837         293   bellsouth.net, inc. 
 4323     3831       1116         404   Time Warner Telecom
 4766     1847       8406         480   Korea Telecom (KIX)
 1785     1785        699         131   PaeTec Communications, Inc.
 7018     1555       5758         987   AT&T WorldNet Services
 8151     1546       2965         242   UniNet S.A. de C.V. 
20115     1514       1501         660   Charter Communications 
17488     1313        138         122   Hathway IP Over Cable Interne
 2386     1311        585         928   AT&T Data Communications Serv
 4755     1292        291         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      3831        3427      Time Warner Telecom
 1785      1785        1654      PaeTec Communications, Inc.
 4766      1847        1367      Korea Telecom (KIX)
 8151      1546        1304      UniNet S.A. de C.V. 
17488      1313        1191      Hathway IP Over Cable Interne
 4755      1292        1144      TATA Communications formerly 
11492      1124        1110      Cable One 
22773      1148        1077      Cox Communications, Inc.
 6478      1212        1066      AT&T Worldnet Services 
 7545      1167        1065      TPG Internet Pty Ltd

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  12.39.155.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.159.0/24        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
2.80.0.0/14           3243     Telepac - Comunicacoes Intera
14.0.0.0/8             237     Merit Network 
41.190.66.0/24       37039     Alink Telecom Benin
41.202.96.0/19       29571     Ci Telecom Autonomous system 
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      26452     Local Communications Networks
41.223.196.0/24      36990     Alkan Telecom Ltd
41.223.197.0/24      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      /11:66      /12:192     
/13:397     /14:689     /15:1261    /16:11067   /17:5261    /18:8949    
/19:18260   /20:22474   /21:22623   /22:29366   /23:28946   /24:167404  
/25:971     /26:1234    /27:629     /28:142     /29:8       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2550          3977      bellsouth.net, inc. 
 4323     2335          3831      Time Warner Telecom
 4766     1481          1847      Korea Telecom (KIX)
 1785     1246          1785      PaeTec Communications, Inc.
17488     1063          1313      Hathway IP Over Cable Interne
18566     1040          1059      Covad Communications 
11492     1033          1124      Cable One 
 7018      935          1555      AT&T WorldNet Services
10620      930          1014      TVCABLE BOGOTA 
 8452      907          1007      TEDATA

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

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

   4:13        8:261      12:2001     13:10       15:23       16:3      
  17:8        20:25       24:1411     27:54       32:48       33:12     
  38:661      40:97       41:2115     44:3        46:1        47:25     
  52:6        55:6        56:2        57:24       58:715      59:527    
  60:431      61:1101     62:1034     63:1992     64:3855     65:2369   
  66:4162     67:1817     68:1059     69:2807     70:709      71:238    
  72:1832     73:2        74:2269     75:247      76:307      77:844    
  78:621      79:411      80:980      81:786      82:460      83:444    
  84:703      85:1044     86:452      87:697      88:325      89:1553   
  90:87       91:2732     92:474      93:1110     94:1400     95:587    
  96:245      97:307      98:549      99:26      109:461     110:330    
 111:508     112:257     113:281     114:392     115:598     116:1028   
 117:636     118:428     119:922     120:150     121:788     122:1438   
 123:881     124:1107    125:1298    128:211     129:207     130:196    
 131:563     132:246     133:17      134:196     135:44      136:227    
 137:172     138:253     139:92      140:487     141:136     142:361    
 143:380     144:468     145:52      146:428     147:168     148:586    
 149:321     150:151     151:169     152:263     153:168     154:2      
 155:325     156:184     157:324     158:107     159:368     160:313    
 161:204     162:269     163:165     164:409     165:531     166:504    
 167:399     168:802     169:160     170:700     171:50      172:1      
 173:673     174:657     175:76      178:69      180:444     182:43     
 183:251     184:36      186:363     187:308     188:1280    189:756    
 190:3657    192:5737    193:4675    194:3353    195:2758    196:1138   
 197:1       198:3573    199:3423    200:5331    201:1510    202:7984   
 203:8280    204:4055    205:2350    206:2545    207:3031    208:3929   
 209:3475    210:2511    211:1239    212:1725    213:1654    214:657    
 215:65      216:4556    217:1540    218:503     219:384     220:1100   
 221:396     222:312    

End of report



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