Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Dec 18 12:29:41 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 19 Dec, 2009

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

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

BGP routing table entries examined:                              307389
    Prefixes after maximum aggregation:                          142780
    Deaggregation factor:                                          2.15
    Unique aggregates announced to Internet:                     151105
Total ASes present in the Internet Routing Table:                 32965
    Prefixes per ASN:                                              9.32
Origin-only ASes present in the Internet Routing Table:           28621
Origin ASes announcing only one prefix:                           13977
Transit ASes present in the Internet Routing Table:                4344
Transit-only ASes present in the Internet Routing Table:             96
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (12026)                               22
Prefixes from unregistered ASNs in the Routing Table:               694
    Unregistered ASNs in the Routing Table:                         131
Number of 32-bit ASNs allocated by the RIRs:                        360
Prefixes from 32-bit ASNs in the Routing Table:                     334
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            165
Number of addresses announced to Internet:                   2164856576
    Equivalent to 129 /8s, 9 /16s and 23 /24s
    Percentage of available address space announced:               58.4
    Percentage of allocated address space announced:               66.2
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               80.5
Total number of prefixes smaller than registry allocations:      148286

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

Prefixes being announced by APNIC Region ASes:                    74394
    Total APNIC prefixes after maximum aggregation:               25612
    APNIC Deaggregation factor:                                    2.90
Prefixes being announced from the APNIC address blocks:           71083
    Unique aggregates announced from the APNIC address blocks:    31155
APNIC Region origin ASes present in the Internet Routing Table:    3897
    APNIC Prefixes per ASN:                                       18.24
APNIC Region origin ASes announcing only one prefix:               1056
APNIC Region transit ASes present in the Internet Routing Table:    603
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         22
Number of APNIC addresses announced to Internet:              485240352
    Equivalent to 28 /8s, 236 /16s and 46 /24s
    Percentage of available APNIC address space announced:         80.3

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:                    128934
    Total ARIN prefixes after maximum aggregation:                67391
    ARIN Deaggregation factor:                                     1.91
Prefixes being announced from the ARIN address blocks:           103169
    Unique aggregates announced from the ARIN address blocks:     38997
ARIN Region origin ASes present in the Internet Routing Table:    13421
    ARIN Prefixes per ASN:                                         7.69
ARIN Region origin ASes announcing only one prefix:                5191
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:                          24
Number of ARIN addresses announced to Internet:               734074144
    Equivalent to 43 /8s, 193 /16s and 21 /24s
    Percentage of available ARIN address space announced:          64.3

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:                     70684
    Total RIPE prefixes after maximum aggregation:                41371
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            64090
    Unique aggregates announced from the RIPE address blocks:     42777
RIPE Region origin ASes present in the Internet Routing Table:    13908
    RIPE Prefixes per ASN:                                         4.61
RIPE Region origin ASes announcing only one prefix:                7242
RIPE Region transit ASes present in the Internet Routing Table:    2095
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               408585280
    Equivalent to 24 /8s, 90 /16s and 132 /24s
    Percentage of available RIPE address space announced:          76.1

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:                   26860
    Total LACNIC prefixes after maximum aggregation:               6489
    LACNIC Deaggregation factor:                                   4.14
Prefixes being announced from the LACNIC address blocks:          25206
    Unique aggregates announced from the LACNIC address blocks:   13774
LACNIC Region origin ASes present in the Internet Routing Table:   1223
    LACNIC Prefixes per ASN:                                      20.61
LACNIC Region origin ASes announcing only one prefix:               396
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:                        20
Number of LACNIC addresses announced to Internet:              69579776
    Equivalent to 4 /8s, 37 /16s and 180 /24s
    Percentage of available LACNIC address space announced:        69.1

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:                   5955
    Total AfriNIC prefixes after maximum aggregation:              1588
    AfriNIC Deaggregation factor:                                  3.75
Prefixes being announced from the AfriNIC address blocks:          4346
    Unique aggregates announced from the AfriNIC address blocks:   1542
AfriNIC Region origin ASes present in the Internet Routing Table:   336
    AfriNIC Prefixes per ASN:                                     12.93
AfriNIC Region origin ASes announcing only one prefix:               92
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:                       18
Number of AfriNIC addresses announced to Internet:             14326784
    Equivalent to 0 /8s, 218 /16s and 156 /24s
    Percentage of available AfriNIC address space announced:       42.7

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     1776       7509         465   Korea Telecom (KIX)
17488     1458        145         133   Hathway IP Over Cable Interne
 4755     1280        291         146   TATA Communications formerly 
 4134     1016      19444         396   CHINANET-BACKBONE
 9583      999         75         502   Sify Limited
18101      993        204          35   Reliance Infocom Ltd Internet
 7545      919        198          96   TPG Internet Pty Ltd
17974      846        272          61   PT TELEKOMUNIKASI INDONESIA
 9829      844        676          23   BSNL National Internet Backbo
24560      814        295         177   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     4191       3892         302   bellsouth.net, inc. 
 4323     3773       1067         400   Time Warner Telecom
 1785     1796        699         134   PaeTec Communications, Inc.
 7018     1590       5807        1035   AT&T WorldNet Services
20115     1530       1484         665   Charter Communications 
 2386     1289        616         930   AT&T Data Communications Serv
 3356     1198      10929         423   Level 3 Communications, LLC 
11492     1151        222          14   Cable One 
22773     1122       2600          66   Cox Communications, Inc.
 6478     1109        244         291   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
30890      516         98         207   Evolva Telecom
35805      471         40           5   United Telecom of Georgia
 9198      451        202          13   Kazakhtelecom Data Network Ad
 3292      446       1903         391   TDC Tele Danmark
  702      419       1837         337   UUNET - Commercial IP service
 8866      378        110          23   Bulgarian Telecommunication C
 8551      376        354          41   Bezeq International
 3320      361       7068         307   Deutsche Telekom AG
 3301      351       1412         307   TeliaNet Sweden
 3215      349       3160         112   France Telecom Transpac

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     1582       2899         230   UniNet S.A. de C.V. 
10620     1003        223         130   TVCABLE BOGOTA 
28573      828        673          83   NET Servicos de Comunicao S.A
 7303      665        351          96   Telecom Argentina Stet-France
22047      545        302          14   VTR PUNTO NET S.A. 
11830      472        308          59   Instituto Costarricense de El
11172      446         99          70   Servicios Alestra S.A de C.V 
14117      437         29          11   Telefonica del Sur S.A. 
 7738      432        858          29   Telecomunicacoes da Bahia S.A
 3816      428        193          71   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     1035        444           8   TEDATA
24863      713        142          54   LINKdotNET AS number
 3741      273        857         233   The Internet Solution 
 2018      178        196         100   Tertiary Education Network 
 6713      177        167          12   Itissalat Al-MAGHRIB
29571      152         19           9   Ci Telecom Autonomous system 
29975      134        506          15   Vodacom
33776      123          7          11   Starcomms Nigeria Limited
 5536      121          8          18   Internet Egypt Network
 5713      115        505          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     4191       3892         302   bellsouth.net, inc. 
 4323     3773       1067         400   Time Warner Telecom
 1785     1796        699         134   PaeTec Communications, Inc.
 4766     1776       7509         465   Korea Telecom (KIX)
 7018     1590       5807        1035   AT&T WorldNet Services
 8151     1582       2899         230   UniNet S.A. de C.V. 
20115     1530       1484         665   Charter Communications 
17488     1458        145         133   Hathway IP Over Cable Interne
 2386     1289        616         930   AT&T Data Communications Serv
 4755     1280        291         146   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      3773        3373      Time Warner Telecom
 1785      1796        1662      PaeTec Communications, Inc.
 8151      1582        1352      UniNet S.A. de C.V. 
17488      1458        1325      Hathway IP Over Cable Interne
 4766      1776        1311      Korea Telecom (KIX)
11492      1151        1137      Cable One 
 4755      1280        1134      TATA Communications formerly 
22773      1122        1056      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 8452      1035        1027      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        /8:21       /9:10      /10:25      /11:65      /12:181     
/13:381     /14:649     /15:1228    /16:10826   /17:5031    /18:8597    
/19:17710   /20:21612   /21:21499   /22:27879   /23:28155   /24:160576  
/25:931     /26:1169    /27:585     /28:232     /29:11      /30:8       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2731          4191      bellsouth.net, inc. 
 4323     2368          3773      Time Warner Telecom
 4766     1426          1776      Korea Telecom (KIX)
 1785     1263          1796      PaeTec Communications, Inc.
17488     1224          1458      Hathway IP Over Cable Interne
11492     1072          1151      Cable One 
18566     1040          1059      Covad Communications 
 7018      956          1590      AT&T WorldNet Services
 8452      931          1035      TEDATA
10620      908          1003      TVCABLE BOGOTA 

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

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

   1:1         2:1         4:13        8:239      12:2017     13:9      
  15:22       16:3        17:8        20:37       24:1286     32:49     
  38:628      40:99       41:1853     43:1        44:3        46:1      
  47:21       52:6        55:2        56:2        57:24       58:646    
  59:660      60:446      61:1099     62:968      63:2020     64:3790   
  65:2374     66:4102     67:1757     68:1034     69:2840     70:685    
  71:232      72:1880     73:3        74:2046     75:224      76:366    
  77:857      78:602      79:402      80:949      81:812      82:467    
  83:442      84:533      85:1016     86:375      87:690      88:417    
  89:1559     90:63       91:2668     92:450      93:1131     94:1314   
  95:830      96:194      97:290      98:430      99:23      109:188    
 110:280     111:510     112:163     113:218     114:304     115:471    
 116:1089    117:595     118:366     119:813     120:144     121:833    
 122:1359    123:797     124:1025    125:1302    128:211     129:201    
 130:134     131:439     132:81      133:16      134:185     135:41     
 136:228     137:164     138:234     139:82      140:453     141:122    
 142:377     143:334     144:390     145:53      146:390     147:171    
 148:566     149:193     150:148     151:172     152:226     153:161    
 154:2       155:270     156:171     157:331     158:97      159:355    
 160:303     161:174     162:281     163:163     164:308     165:471    
 166:492     167:392     168:760     169:160     170:568     171:42     
 172:1       173:408     174:448     175:16      180:248     183:169    
 184:3       186:242     187:219     188:1086    189:620     190:3393   
 192:5712    193:4349    194:3373    195:2779    196:1197    198:3541   
 199:3393    200:5226    201:1436    202:7977    203:8308    204:3981   
 205:2156    206:2400    207:3049    208:3952    209:3404    210:2563   
 211:1147    212:1648    213:1646    214:233     215:45      216:4430   
 217:1367    218:478     219:455     220:1151    221:447     222:300    


End of report




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