Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Feb 12 12:50:09 CST 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 13 Feb, 2010

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

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

BGP routing table entries examined:                              311463
    Prefixes after maximum aggregation:                          144143
    Deaggregation factor:                                          2.16
    Unique aggregates announced to Internet:                     152471
Total ASes present in the Internet Routing Table:                 33274
    Prefixes per ASN:                                              9.36
Origin-only ASes present in the Internet Routing Table:           28899
Origin ASes announcing only one prefix:                           14066
Transit ASes present in the Internet Routing Table:                4375
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:                                      23
    Max AS path prepend of ASN ( 9503)                               21
Prefixes from unregistered ASNs in the Routing Table:               848
    Unregistered ASNs in the Routing Table:                         138
Number of 32-bit ASNs allocated by the RIRs:                        427
Prefixes from 32-bit ASNs in the Routing Table:                     400
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            289
Number of addresses announced to Internet:                   2184202944
    Equivalent to 130 /8s, 48 /16s and 74 /24s
    Percentage of available address space announced:               58.9
    Percentage of allocated address space announced:               66.1
    Percentage of available address space allocated:               89.1
    Percentage of address space in use by end-sites:               81.1
Total number of prefixes smaller than registry allocations:      149910

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

Prefixes being announced by APNIC Region ASes:                    75345
    Total APNIC prefixes after maximum aggregation:               25911
    APNIC Deaggregation factor:                                    2.91
Prefixes being announced from the APNIC address blocks:           72008
    Unique aggregates announced from the APNIC address blocks:    31613
APNIC Region origin ASes present in the Internet Routing Table:    3950
    APNIC Prefixes per ASN:                                       18.23
APNIC Region origin ASes announcing only one prefix:               1076
APNIC Region transit ASes present in the Internet Routing Table:    619
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         23
Number of APNIC addresses announced to Internet:              491620128
    Equivalent to 29 /8s, 77 /16s and 135 /24s
    Percentage of available APNIC address space announced:         77.1

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     1/8,  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,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    129695
    Total ARIN prefixes after maximum aggregation:                67717
    ARIN Deaggregation factor:                                     1.92
Prefixes being announced from the ARIN address blocks:           103832
    Unique aggregates announced from the ARIN address blocks:     39504
ARIN Region origin ASes present in the Internet Routing Table:    13492
    ARIN Prefixes per ASN:                                         7.70
ARIN Region origin ASes announcing only one prefix:                5209
ARIN Region transit ASes present in the Internet Routing Table:    1324
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               738753312
    Equivalent to 44 /8s, 8 /16s and 123 /24s
    Percentage of available ARIN address space announced:          64.8

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,  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:                     71765
    Total RIPE prefixes after maximum aggregation:                41740
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            64782
    Unique aggregates announced from the RIPE address blocks:     42816
RIPE Region origin ASes present in the Internet Routing Table:    14066
    RIPE Prefixes per ASN:                                         4.61
RIPE Region origin ASes announcing only one prefix:                7278
RIPE Region transit ASes present in the Internet Routing Table:    2109
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               414454912
    Equivalent to 24 /8s, 180 /16s and 20 /24s
    Percentage of available RIPE address space announced:          77.2

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,  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:                   27496
    Total LACNIC prefixes after maximum aggregation:               6585
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:          25839
    Unique aggregates announced from the LACNIC address blocks:   13895
LACNIC Region origin ASes present in the Internet Routing Table:   1242
    LACNIC Prefixes per ASN:                                      20.80
LACNIC Region origin ASes announcing only one prefix:               407
LACNIC Region transit ASes present in the Internet Routing Table:   213
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC addresses announced to Internet:              70495488
    Equivalent to 4 /8s, 51 /16s and 173 /24s
    Percentage of available LACNIC address space announced:        70.0

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:                   6541
    Total AfriNIC prefixes after maximum aggregation:              1811
    AfriNIC Deaggregation factor:                                  3.61
Prefixes being announced from the AfriNIC address blocks:          4832
    Unique aggregates announced from the AfriNIC address blocks:   1377
AfriNIC Region origin ASes present in the Internet Routing Table:   343
    AfriNIC Prefixes per ASN:                                     14.09
AfriNIC Region origin ASes announcing only one prefix:               96
AfriNIC Region transit ASes present in the Internet Routing Table:   72
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:             14845952
    Equivalent to 0 /8s, 226 /16s and 136 /24s
    Percentage of available AfriNIC address space announced:       44.2

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     1858       7510         471   Korea Telecom (KIX)
 4755     1453        287         155   TATA Communications formerly 
17488     1266        132         135   Hathway IP Over Cable Interne
18101     1088        221          39   Reliance Infocom Ltd Internet
 4134     1019      19607         398   CHINANET-BACKBONE
 9583      990         74         494   Sify Limited
 7545      945        199          97   TPG Internet Pty Ltd
17974      914        278          45   PT TELEKOMUNIKASI INDONESIA
 4808      850       1582         211   CNCGROUP IP network: China169
24560      845        300         166   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     4122       3875         316   bellsouth.net, inc. 
 4323     3791       1088         394   Time Warner Telecom
 1785     1843        699         131   PaeTec Communications, Inc.
 7018     1559       5758        1005   AT&T WorldNet Services
20115     1539       1488         670   Charter Communications 
 2386     1317        617         931   AT&T Data Communications Serv
 3356     1204      10931         422   Level 3 Communications, LLC 
11492     1133        222          14   Cable One 
22773     1113       2600          66   Cox Communications, Inc.
 6478     1104        240         244   AT&T Worldnet Services 

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      571         40           5   United Telecom of Georgia
 3292      454       1904         396   TDC Tele Danmark
30890      453        101         205   Evolva Telecom
  702      423       1869         335   UUNET - Commercial IP service
 8551      397        353          37   Bezeq International
 8866      378        110          24   Bulgarian Telecommunication C
 3320      354       7068         309   Deutsche Telekom AG
 3301      352       1413         313   TeliaNet Sweden
 3215      347       3206         103   France Telecom Transpac
12479      323        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     1591       2894         236   UniNet S.A. de C.V. 
10620      988        223         147   TVCABLE BOGOTA 
28573      868        688          85   NET Servicos de Comunicao S.A
 7303      676        356          99   Telecom Argentina Stet-France
22047      528        310          15   VTR PUNTO NET S.A. 
 6503      491        167         191   AVANTEL, S.A. 
11830      473        308          59   Instituto Costarricense de El
11172      445         99          70   Servicios Alestra S.A de C.V 
 7738      439        858          29   Telecomunicacoes da Bahia S.A
 3816      436        194          70   Empresa Nacional de Telecomun

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     1004        445           9   TEDATA
24863      720        144          40   LINKdotNET AS number
36992      588        130         217   Etisalat MISR
 3741      273        854         233   The Internet Solution 
 2018      209        215         120   Tertiary Education Network 
 6713      177        167          12   Itissalat Al-MAGHRIB
29571      168         19           9   Ci Telecom Autonomous system 
29975      134        506          15   Vodacom
33776      124          7          11   Starcomms Nigeria Limited
24835      119         78          10   RAYA Telecom - Egypt

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     4122       3875         316   bellsouth.net, inc. 
 4323     3791       1088         394   Time Warner Telecom
 4766     1858       7510         471   Korea Telecom (KIX)
 1785     1843        699         131   PaeTec Communications, Inc.
 8151     1591       2894         236   UniNet S.A. de C.V. 
 7018     1559       5758        1005   AT&T WorldNet Services
20115     1539       1488         670   Charter Communications 
 4755     1453        287         155   TATA Communications formerly 
 2386     1317        617         931   AT&T Data Communications Serv
17488     1266        132         135   Hathway IP Over Cable Interne

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

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

  ASN   No of nets  Net Savings Description
 4323      3791        3397      Time Warner Telecom
 1785      1843        1712      PaeTec Communications, Inc.
 4766      1858        1387      Korea Telecom (KIX)
 8151      1591        1355      UniNet S.A. de C.V. 
 4755      1453        1298      TATA Communications formerly 
17488      1266        1131      Hathway IP Over Cable Interne
11492      1133        1119      Cable One 
18101      1088        1049      Reliance Infocom Ltd Internet
18566      1059        1049      Covad Communications 
22773      1113        1047      Cox Communications, Inc.

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
2.0.0.0/16           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
41.77.236.0/22       23456     32-bit ASN transition
41.190.64.0/22       28683     Office des Postes et telecomm
41.190.66.0/24       37039     Alink Telecom Benin
41.202.96.0/19       29571     Ci Telecom Autonomous system 
41.202.160.0/19      33788     KANAR TELECOMMUNICATION ( KAN
41.205.0.0/19        16637     MTN Network Solutions
41.205.2.0/24        16637     MTN Network Solutions

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      /12:185     
/13:385     /14:658     /15:1235    /16:10926   /17:5135    /18:8717    
/19:17941   /20:21862   /21:21982   /22:28229   /23:28359   /24:162607  
/25:974     /26:1220    /27:678     /28:226     /29:9       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2679          4122      bellsouth.net, inc. 
 4323     2355          3791      Time Warner Telecom
 4766     1477          1858      Korea Telecom (KIX)
 1785     1305          1843      PaeTec Communications, Inc.
11492     1049          1133      Cable One 
17488     1044          1266      Hathway IP Over Cable Interne
18566     1040          1059      Covad Communications 
18101      961          1088      Reliance Infocom Ltd Internet
 7018      935          1559      AT&T WorldNet Services
 8452      903          1004      TEDATA

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

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

   2:1         4:12        8:234      12:1994     13:10       15:22     
  16:3        17:8        20:39       24:1314     27:1        32:48     
  38:648      40:99       41:1928     44:3        46:1        47:26     
  52:6        55:2        56:2        57:23       58:640      59:633    
  60:399      61:1098     62:1044     63:2010     64:3797     65:2357   
  66:4114     67:1795     68:1040     69:2832     70:686      71:235    
  72:1865     73:2        74:2107     75:240      76:337      77:887    
  78:599      79:390      80:980      81:777      82:456      83:433    
  84:638      85:1008     86:384      87:689      88:417      89:1544   
  90:71       91:2724     92:423      93:1158     94:1382     95:555    
  96:217      97:295      98:494      99:23      100:1       109:333    
 110:294     111:443     112:234     113:223     114:370     115:531    
 116:1025    117:620     118:383     119:818     120:145     121:829    
 122:1410    123:874     124:1067    125:1286    128:196     129:203    
 130:140     131:486     132:88      133:16      134:194     135:42     
 136:220     137:175     138:238     139:91      140:466     141:132    
 142:377     143:347     144:395     145:51      146:410     147:192    
 148:571     149:203     150:146     151:169     152:250     153:166    
 154:2       155:275     156:179     157:332     158:99      159:355    
 160:305     161:177     162:268     163:166     164:310     165:462    
 166:502     167:388     168:760     169:157     170:570     171:48     
 172:3       173:483     174:537     175:52      180:315     183:225    
 184:5       186:303     187:206     188:1297    189:667     190:3515   
 192:5734    193:4441    194:3355    195:2782    196:1176    198:3537   
 199:3386    200:5296    201:1453    202:8042    203:8301    204:4029   
 205:2196    206:2497    207:2984    208:3917    209:3425    210:2540   
 211:1190    212:1670    213:1663    214:251     215:62      216:4471   
 217:1532    218:482     219:427     220:1071    221:379     222:306    


End of report




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