Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 28 13:09:51 CDT 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 29 May, 2010

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

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

BGP routing table entries examined:                              321666
    Prefixes after maximum aggregation:                          148426
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     156760
Total ASes present in the Internet Routing Table:                 34085
    Prefixes per ASN:                                              9.44
Origin-only ASes present in the Internet Routing Table:           29586
Origin ASes announcing only one prefix:                           14361
Transit ASes present in the Internet Routing Table:                4499
Transit-only ASes present in the Internet Routing Table:            100
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (41664)                               21
Prefixes from unregistered ASNs in the Routing Table:               332
    Unregistered ASNs in the Routing Table:                         121
Number of 32-bit ASNs allocated by the RIRs:                        591
Prefixes from 32-bit ASNs in the Routing Table:                     675
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            162
Number of addresses announced to Internet:                   2257820704
    Equivalent to 134 /8s, 147 /16s and 156 /24s
    Percentage of available address space announced:               60.9
    Percentage of allocated address space announced:               66.3
    Percentage of available address space allocated:               91.9
    Percentage of address space in use by end-sites:               83.0
Total number of prefixes smaller than registry allocations:      153947

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

Prefixes being announced by APNIC Region ASes:                    76876
    Total APNIC prefixes after maximum aggregation:               26795
    APNIC Deaggregation factor:                                    2.87
Prefixes being announced from the APNIC address blocks:           73868
    Unique aggregates announced from the APNIC address blocks:    32526
APNIC Region origin ASes present in the Internet Routing Table:    4061
    APNIC Prefixes per ASN:                                       18.19
APNIC Region origin ASes announcing only one prefix:               1119
APNIC Region transit ASes present in the Internet Routing Table:    631
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              520615232
    Equivalent to 31 /8s, 7 /16s and 245 /24s
    Percentage of available APNIC address space announced:         77.6

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:                68966
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           106763
    Unique aggregates announced from the ARIN address blocks:     40970
ARIN Region origin ASes present in the Internet Routing Table:    13704
    ARIN Prefixes per ASN:                                         7.79
ARIN Region origin ASes announcing only one prefix:                5273
ARIN Region transit ASes present in the Internet Routing Table:    1348
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               731534880
    Equivalent to 43 /8s, 154 /16s and 86 /24s
    Percentage of available ARIN address space announced:          62.3

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,  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:                     74212
    Total RIPE prefixes after maximum aggregation:                43045
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            67190
    Unique aggregates announced from the RIPE address blocks:     44130
RIPE Region origin ASes present in the Internet Routing Table:    14487
    RIPE Prefixes per ASN:                                         4.64
RIPE Region origin ASes announcing only one prefix:                7464
RIPE Region transit ASes present in the Internet Routing Table:    2168
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               428079040
    Equivalent to 25 /8s, 131 /16s and 247 /24s
    Percentage of available RIPE address space announced:          75.0

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:                   28430
    Total LACNIC prefixes after maximum aggregation:               6826
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:          26846
    Unique aggregates announced from the LACNIC address blocks:   14057
LACNIC Region origin ASes present in the Internet Routing Table:   1295
    LACNIC Prefixes per ASN:                                      20.73
LACNIC Region origin ASes announcing only one prefix:               398
LACNIC Region transit ASes present in the Internet Routing Table:   227
Average LACNIC Region AS path length visible:                       3.9
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC addresses announced to Internet:              73279744
    Equivalent to 4 /8s, 94 /16s and 41 /24s
    Percentage of available LACNIC address space announced:        72.8

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:                   7359
    Total AfriNIC prefixes after maximum aggregation:              1852
    AfriNIC Deaggregation factor:                                  3.97
Prefixes being announced from the AfriNIC address blocks:          5668
    Unique aggregates announced from the AfriNIC address blocks:   1668
AfriNIC Region origin ASes present in the Internet Routing Table:   363
    AfriNIC Prefixes per ASN:                                     15.61
AfriNIC Region origin ASes announcing only one prefix:              107
AfriNIC Region transit ASes present in the Internet Routing Table:   82
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             17983744
    Equivalent to 1 /8s, 18 /16s and 105 /24s
    Percentage of available AfriNIC address space announced:       53.6

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       8422         483   Korea Telecom (KIX)
17488     1316        140         123   Hathway IP Over Cable Interne
 4755     1310        293         153   TATA Communications formerly 
 7545     1279        232         104   TPG Internet Pty Ltd
17974     1067        281          19   PT TELEKOMUNIKASI INDONESIA
 9583     1001         74         491   Sify Limited
24560      907        306         171   Bharti Airtel Ltd., Telemedia
 4134      875      21259         406   CHINANET-BACKBONE
 4808      848       1571         213   CNCGROUP IP network: China169
 9829      797        681          34   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     3922       3733         287   bellsouth.net, inc. 
 4323     3364       1116         404   Time Warner Telecom
 1785     1787        699         130   PaeTec Communications, Inc.
20115     1528       1498         656   Charter Communications 
 7018     1515       5735         965   AT&T WorldNet Services
 2386     1285        569         914   AT&T Data Communications Serv
 6478     1252        257          97   AT&T Worldnet Services 
 3356     1186      10883         405   Level 3 Communications, LLC 
22773     1155       2604          64   Cox Communications, Inc.
11492     1149        207          70   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      628         56           6   United Telecom of Georgia
 3292      454       2028         395   TDC Tele Danmark
30890      444        116         208   Evolva Telecom
  702      415       1869         330   UUNET - Commercial IP service
 8551      402        355          38   Bezeq International
 8866      399        117          18   Bulgarian Telecommunication C
 3301      368       1414         323   TeliaNet Sweden
 3320      365       7072         318   Deutsche Telekom AG
34984      358         88         183   BILISIM TELEKOM
12479      337        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     1522       2965         245   UniNet S.A. de C.V. 
10620     1050        236         151   TVCABLE BOGOTA 
28573      893        724          77   NET Servicos de Comunicao S.A
 7303      730        377         107   Telecom Argentina Stet-France
 6503      588        174         209   AVANTEL, S.A. 
22047      545        310          15   VTR PUNTO NET S.A. 
 7738      477        922          30   Telecomunicacoes da Bahia S.A
 3816      473        204          73   Empresa Nacional de Telecomun
14117      455         30          13   Telefonica del Sur S.A. 
11172      443         99          71   Servicios Alestra S.A de C.V 

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     1283        445          10   TEDATA
24863      713        147          39   LINKdotNET AS number
36992      638        278         185   Etisalat MISR
 3741      270        852         231   The Internet Solution 
 2018      217        231         112   Tertiary Education Network 
33776      213         11          14   Starcomms Nigeria Limited
 6713      176        167          12   Itissalat Al-MAGHRIB
24835      176         78          10   RAYA Telecom - Egypt
29571      172         19           9   Ci Telecom Autonomous system 
29975      133        506          14   Vodacom

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     3922       3733         287   bellsouth.net, inc. 
 4323     3364       1116         404   Time Warner Telecom
 4766     1847       8422         483   Korea Telecom (KIX)
 1785     1787        699         130   PaeTec Communications, Inc.
20115     1528       1498         656   Charter Communications 
 8151     1522       2965         245   UniNet S.A. de C.V. 
 7018     1515       5735         965   AT&T WorldNet Services
17488     1316        140         123   Hathway IP Over Cable Interne
 4755     1310        293         153   TATA Communications formerly 
 2386     1285        569         914   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      3364        2960      Time Warner Telecom
 1785      1787        1657      PaeTec Communications, Inc.
 4766      1847        1364      Korea Telecom (KIX)
 8151      1522        1277      UniNet S.A. de C.V. 
 8452      1283        1273      TEDATA
17488      1316        1193      Hathway IP Over Cable Interne
 7545      1279        1175      TPG Internet Pty Ltd
 4755      1310        1157      TATA Communications formerly 
 6478      1252        1155      AT&T Worldnet Services 
22773      1155        1091      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
31.0.0.0/16          12654     RIPE NCC RIS Project
31.0.0.0/8             237     Merit Network 
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<<
41.223.188.0/24      22351     Intelsat 
41.223.196.0/24      36990     Alkan Telecom Ltd
41.223.197.0/24      36990     Alkan Telecom Ltd
41.223.198.0/24      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      /10:26      /11:67      /12:194     
/13:402     /14:692     /15:1274    /16:11080   /17:5285    /18:8994    
/19:18272   /20:22581   /21:22622   /22:29517   /23:29210   /24:168435  
/25:964     /26:1259    /27:628     /28:108     /29:10      /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2513          3922      bellsouth.net, inc. 
 4323     1850          3364      Time Warner Telecom
 4766     1479          1847      Korea Telecom (KIX)
 1785     1251          1787      PaeTec Communications, Inc.
 8452     1170          1283      TEDATA
11492     1063          1149      Cable One 
17488     1063          1316      Hathway IP Over Cable Interne
18566     1040          1059      Covad Communications 
10620      966          1050      TVCABLE BOGOTA 
 7018      908          1515      AT&T WorldNet Services

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

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

   1:1         4:13        8:261      12:2012     13:10       14:1      
  15:23       16:3        17:8        20:21       24:1424     27:111    
  31:1        32:47       33:12       38:673      40:98       41:2520   
  44:3        47:26       52:8        55:7        56:2        57:24     
  58:728      59:503      60:456      61:1080     62:1062     63:1974   
  64:3612     65:2348     66:4251     67:1826     68:1113     69:2855   
  70:714      71:243      72:1824     73:2        74:2093     75:253    
  76:309      77:863      78:624      79:425      80:1010     81:801    
  82:480      83:448      84:691      85:1058     86:466      87:693    
  88:333      89:1552     90:90       91:2776     92:505      93:1112   
  94:1423     95:598      96:280      97:315      98:566      99:28     
 108:32      109:492     110:360     111:500     112:263     113:296    
 114:411     115:578     116:1035    117:645     118:444     119:934    
 120:142     121:741     122:1436    123:913     124:1104    125:1315   
 128:211     129:210     130:193     131:559     132:247     133:17     
 134:196     135:45      136:222     137:171     138:256     139:103    
 140:482     141:136     142:353     143:386     144:475     145:52     
 146:424     147:165     148:611     149:291     150:153     151:169    
 152:261     153:168     154:2       155:326     156:156     157:325    
 158:107     159:374     160:315     161:179     162:258     163:180    
 164:407     165:348     166:473     167:398     168:781     169:165    
 170:710     171:53      172:2       173:767     174:661     175:92     
 176:1       178:145     180:479     182:79      183:128     184:45     
 186:392     187:345     188:1343    189:794     190:3662    192:5749   
 193:4695    194:3355    195:2783    196:1202    198:3564    199:3430   
 200:5365    201:1508    202:8017    203:8307    204:4066    205:2332   
 206:2526    207:3042    208:3889    209:3412    210:2508    211:1243   
 212:1748    213:1688    214:656     215:69      216:4659    217:1536   
 218:488     219:378     220:1123    221:399     222:316     223:1      


End of report




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