Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 4 13:10:30 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 05 Jun, 2010

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

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

BGP routing table entries examined:                              321840
    Prefixes after maximum aggregation:                          148535
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     157096
Total ASes present in the Internet Routing Table:                 34116
    Prefixes per ASN:                                              9.43
Origin-only ASes present in the Internet Routing Table:           29612
Origin ASes announcing only one prefix:                           14387
Transit ASes present in the Internet Routing Table:                4504
Transit-only ASes present in the Internet Routing Table:            104
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:               316
    Unregistered ASNs in the Routing Table:                         117
Number of 32-bit ASNs allocated by the RIRs:                        605
Prefixes from 32-bit ASNs in the Routing Table:                     679
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            177
Number of addresses announced to Internet:                   2230949344
    Equivalent to 132 /8s, 249 /16s and 149 /24s
    Percentage of available address space announced:               60.2
    Percentage of allocated address space announced:               64.9
    Percentage of available address space allocated:               92.8
    Percentage of address space in use by end-sites:               83.1
Total number of prefixes smaller than registry allocations:      154062

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

Prefixes being announced by APNIC Region ASes:                    77021
    Total APNIC prefixes after maximum aggregation:               26796
    APNIC Deaggregation factor:                                    2.87
Prefixes being announced from the APNIC address blocks:           74073
    Unique aggregates announced from the APNIC address blocks:    32634
APNIC Region origin ASes present in the Internet Routing Table:    4071
    APNIC Prefixes per ASN:                                       18.20
APNIC Region origin ASes announcing only one prefix:               1123
APNIC Region transit ASes present in the Internet Routing Table:    632
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              520409120
    Equivalent to 31 /8s, 4 /16s and 208 /24s
    Percentage of available APNIC address space announced:         77.5

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:                    134032
    Total ARIN prefixes after maximum aggregation:                69042
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           106785
    Unique aggregates announced from the ARIN address blocks:     41111
ARIN Region origin ASes present in the Internet Routing Table:    13714
    ARIN Prefixes per ASN:                                         7.79
ARIN Region origin ASes announcing only one prefix:                5271
ARIN Region transit ASes present in the Internet Routing Table:    1344
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               735951904
    Equivalent to 43 /8s, 221 /16s and 188 /24s
    Percentage of available ARIN address space announced:          62.7

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:                     74083
    Total RIPE prefixes after maximum aggregation:                43081
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            67041
    Unique aggregates announced from the RIPE address blocks:     44213
RIPE Region origin ASes present in the Internet Routing Table:    14501
    RIPE Prefixes per ASN:                                         4.62
RIPE Region origin ASes announcing only one prefix:                7491
RIPE Region transit ASes present in the Internet Routing Table:    2172
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               429056672
    Equivalent to 25 /8s, 146 /16s and 226 /24s
    Percentage of available RIPE address space announced:          75.2

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,  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:                   28457
    Total LACNIC prefixes after maximum aggregation:               6865
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:          26892
    Unique aggregates announced from the LACNIC address blocks:   14146
LACNIC Region origin ASes present in the Internet Routing Table:   1293
    LACNIC Prefixes per ASN:                                      20.80
LACNIC Region origin ASes announcing only one prefix:               397
LACNIC Region transit ASes present in the Internet Routing Table:   226
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC addresses announced to Internet:              73480448
    Equivalent to 4 /8s, 97 /16s and 57 /24s
    Percentage of available LACNIC address space announced:        54.7

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:                   7349
    Total AfriNIC prefixes after maximum aggregation:              1801
    AfriNIC Deaggregation factor:                                  4.08
Prefixes being announced from the AfriNIC address blocks:          5682
    Unique aggregates announced from the AfriNIC address blocks:   1716
AfriNIC Region origin ASes present in the Internet Routing Table:   362
    AfriNIC Prefixes per ASN:                                     15.70
AfriNIC Region origin ASes announcing only one prefix:              105
AfriNIC Region transit ASes present in the Internet Routing Table:   83
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             18825216
    Equivalent to 1 /8s, 31 /16s and 64 /24s
    Percentage of available AfriNIC address space announced:       56.1

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     1852       8422         485   Korea Telecom (KIX)
17488     1312        141         124   Hathway IP Over Cable Interne
 4755     1311        293         152   TATA Communications formerly 
 7545     1285        232         103   TPG Internet Pty Ltd
17974     1079        281          19   PT TELEKOMUNIKASI INDONESIA
 9583     1003         74         492   Sify Limited
24560      911        306         170   Bharti Airtel Ltd., Telemedia
 4134      874      21259         406   CHINANET-BACKBONE
 4808      845       1571         213   CNCGROUP IP network: China169
 9829      798        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     3921       3732         286   bellsouth.net, inc. 
 4323     3361       1113         394   Time Warner Telecom
 1785     1789        699         130   PaeTec Communications, Inc.
20115     1530       1498         657   Charter Communications 
 7018     1516       5735         967   AT&T WorldNet Services
 2386     1287        569         909   AT&T Data Communications Serv
 6478     1271        260          97   AT&T Worldnet Services 
 3356     1187      10883         405   Level 3 Communications, LLC 
22773     1161       2605          65   Cox Communications, Inc.
11492     1151        207          68   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      630         56           6   United Telecom of Georgia
 3292      453       2026         394   TDC Tele Danmark
30890      443        111         205   Evolva Telecom
  702      413       1869         328   UUNET - Commercial IP service
 8551      402        355          38   Bezeq International
 8866      401        117          18   Bulgarian Telecommunication C
 3301      368       1414         323   TeliaNet Sweden
 3320      366       7072         319   Deutsche Telekom AG
34984      356         88         183   BILISIM TELEKOM
12479      333        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     1517       2965         244   UniNet S.A. de C.V. 
10620     1052        236         152   TVCABLE BOGOTA 
28573      895        725          78   NET Servicos de Comunicao S.A
 7303      740        382         117   Telecom Argentina Stet-France
 6503      600        174         209   AVANTEL, S.A. 
22047      545        310          15   VTR PUNTO NET S.A. 
 3816      480        206          75   Empresa Nacional de Telecomun
 7738      477        922          30   Telecomunicacoes da Bahia S.A
14420      457         31          70   ANDINATEL S.A. 
14117      456         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     1230        445          10   TEDATA
24863      717        147          39   LINKdotNET AS number
36992      648        279         186   Etisalat MISR
 3741      269        852         230   The Internet Solution 
 2018      219        244          61   Tertiary Education Network 
33776      215         11          10   Starcomms Nigeria Limited
 6713      186        177          14   Itissalat Al-MAGHRIB
24835      176         78          10   RAYA Telecom - Egypt
29571      174         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     3921       3732         286   bellsouth.net, inc. 
 4323     3361       1113         394   Time Warner Telecom
 4766     1852       8422         485   Korea Telecom (KIX)
 1785     1789        699         130   PaeTec Communications, Inc.
20115     1530       1498         657   Charter Communications 
 8151     1517       2965         244   UniNet S.A. de C.V. 
 7018     1516       5735         967   AT&T WorldNet Services
17488     1312        141         124   Hathway IP Over Cable Interne
 4755     1311        293         152   TATA Communications formerly 
 2386     1287        569         909   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      3361        2967      Time Warner Telecom
 1785      1789        1659      PaeTec Communications, Inc.
 4766      1852        1367      Korea Telecom (KIX)
 8151      1517        1273      UniNet S.A. de C.V. 
 8452      1230        1220      TEDATA
17488      1312        1188      Hathway IP Over Cable Interne
 7545      1285        1182      TPG Internet Pty Ltd
 6478      1271        1174      AT&T Worldnet Services 
 4755      1311        1159      TATA Communications formerly 
22773      1161        1096      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
31.1.0.0/21          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 
41.223.189.0/24       6453     Teleglobe Inc. 
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        /8:19       /9:10      /10:27      /11:67      /12:193     
/13:404     /14:694     /15:1276    /16:11097   /17:5288    /18:9010    
/19:18296   /20:22561   /21:22591   /22:29540   /23:29185   /24:168618  
/25:964     /26:1257    /27:617     /28:101     /29:10      /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2512          3921      bellsouth.net, inc. 
 4323     1852          3361      Time Warner Telecom
 4766     1483          1852      Korea Telecom (KIX)
 1785     1252          1789      PaeTec Communications, Inc.
 8452     1117          1230      TEDATA
11492     1065          1151      Cable One 
17488     1058          1312      Hathway IP Over Cable Interne
18566     1040          1059      Covad Communications 
10620      968          1052      TVCABLE BOGOTA 
 7018      913          1516      AT&T WorldNet Services

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

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

   1:2         4:13        8:265      12:2014     13:11       14:1      
  15:23       16:3        17:8        20:21       24:1413     27:111    
  31:1        32:47       33:12       38:676      40:98       41:2500   
  44:3        47:26       52:8        55:7        56:2        57:24     
  58:778      59:502      60:454      61:1077     62:1075     63:1969   
  64:3616     65:2345     66:4261     67:1833     68:1099     69:2867   
  70:718      71:243      72:1835     73:2        74:2107     75:255    
  76:308      77:856      78:632      79:421      80:1002     81:797    
  82:480      83:431      84:702      85:1028     86:465      87:693    
  88:332      89:1543     90:90       91:2788     92:506      93:1104   
  94:1429     95:597      96:279      97:321      98:567      99:28     
 108:32      109:512     110:420     111:504     112:262     113:292    
 114:417     115:567     116:1034    117:644     118:478     119:939    
 120:141     121:742     122:1447    123:918     124:1100    125:1304   
 128:209     129:212     130:193     131:557     132:247     133:17     
 134:195     135:45      136:230     137:169     138:256     139:103    
 140:510     141:137     142:350     143:390     144:477     145:51     
 146:431     147:166     148:615     149:295     150:153     151:168    
 152:261     153:168     154:2       155:328     156:156     157:323    
 158:107     159:374     160:316     161:179     162:263     163:171    
 164:408     165:330     166:476     167:402     168:783     169:165    
 170:706     171:56      172:2       173:788     174:608     175:92     
 176:1       178:167     180:491     182:87      183:132     184:47     
 186:452     187:340     188:1308    189:794     190:3690    192:5748   
 193:4704    194:3352    195:2756    196:1211    198:3564    199:3428   
 200:5352    201:1537    202:7979    203:8265    204:4064    205:2318   
 206:2521    207:3046    208:3872    209:3411    210:2508    211:1262   
 212:1761    213:1689    214:665     215:68      216:4666    217:1537   
 218:486     219:380     220:1126    221:398     222:317     223:1      


End of report




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