Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 11 13:11:02 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 12 Jun, 2010

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

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

BGP routing table entries examined:                              322325
    Prefixes after maximum aggregation:                          148837
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     158178
Total ASes present in the Internet Routing Table:                 34173
    Prefixes per ASN:                                              9.43
Origin-only ASes present in the Internet Routing Table:           29656
Origin ASes announcing only one prefix:                           14403
Transit ASes present in the Internet Routing Table:                4517
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:                                      25
    Max AS path prepend of ASN (41664)                               21
Prefixes from unregistered ASNs in the Routing Table:               308
    Unregistered ASNs in the Routing Table:                         114
Number of 32-bit ASNs allocated by the RIRs:                        618
Prefixes from 32-bit ASNs in the Routing Table:                     704
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            153
Number of addresses announced to Internet:                   2226107872
    Equivalent to 132 /8s, 175 /16s and 181 /24s
    Percentage of available address space announced:               60.1
    Percentage of allocated address space announced:               64.7
    Percentage of available address space allocated:               92.8
    Percentage of address space in use by end-sites:               83.2
Total number of prefixes smaller than registry allocations:      154163

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

Prefixes being announced by APNIC Region ASes:                    77175
    Total APNIC prefixes after maximum aggregation:               26893
    APNIC Deaggregation factor:                                    2.87
Prefixes being announced from the APNIC address blocks:           74194
    Unique aggregates announced from the APNIC address blocks:    33008
APNIC Region origin ASes present in the Internet Routing Table:    4076
    APNIC Prefixes per ASN:                                       18.20
APNIC Region origin ASes announcing only one prefix:               1121
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:              521993248
    Equivalent to 31 /8s, 28 /16s and 252 /24s
    Percentage of available APNIC address space announced:         77.8

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:                    134088
    Total ARIN prefixes after maximum aggregation:                69138
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           106811
    Unique aggregates announced from the ARIN address blocks:     41644
ARIN Region origin ASes present in the Internet Routing Table:    13733
    ARIN Prefixes per ASN:                                         7.78
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:               727992352
    Equivalent to 43 /8s, 100 /16s and 72 /24s
    Percentage of available ARIN address space announced:          62.0

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:                     74215
    Total RIPE prefixes after maximum aggregation:                43198
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            67232
    Unique aggregates announced from the RIPE address blocks:     44421
RIPE Region origin ASes present in the Internet Routing Table:    14524
    RIPE Prefixes per ASN:                                         4.63
RIPE Region origin ASes announcing only one prefix:                7499
RIPE Region transit ASes present in the Internet Routing Table:    2182
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          25
Number of RIPE addresses announced to Internet:               430186912
    Equivalent to 25 /8s, 164 /16s and 33 /24s
    Percentage of available RIPE address space announced:          75.4

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:                   28644
    Total LACNIC prefixes after maximum aggregation:               6829
    LACNIC Deaggregation factor:                                   4.19
Prefixes being announced from the LACNIC address blocks:          27053
    Unique aggregates announced from the LACNIC address blocks:   14082
LACNIC Region origin ASes present in the Internet Routing Table:   1299
    LACNIC Prefixes per ASN:                                      20.83
LACNIC Region origin ASes announcing only one prefix:               404
LACNIC Region transit ASes present in the Internet Routing Table:   228
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC addresses announced to Internet:              73906944
    Equivalent to 4 /8s, 103 /16s and 187 /24s
    Percentage of available LACNIC address space announced:        55.1

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:                   7281
    Total AfriNIC prefixes after maximum aggregation:              1809
    AfriNIC Deaggregation factor:                                  4.02
Prefixes being announced from the AfriNIC address blocks:          5613
    Unique aggregates announced from the AfriNIC address blocks:   1718
AfriNIC Region origin ASes present in the Internet Routing Table:   368
    AfriNIC Prefixes per ASN:                                     15.25
AfriNIC Region origin ASes announcing only one prefix:              108
AfriNIC Region transit ASes present in the Internet Routing Table:   86
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             18883072
    Equivalent to 1 /8s, 32 /16s and 34 /24s
    Percentage of available AfriNIC address space announced:       56.3

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     1849       8422         484   Korea Telecom (KIX)
17488     1316        140         125   Hathway IP Over Cable Interne
 4755     1309        293         153   TATA Communications formerly 
 7545     1307        232         105   TPG Internet Pty Ltd
17974     1097        282          21   PT TELEKOMUNIKASI INDONESIA
 9583      994         73         490   Sify Limited
24560      916        306         169   Bharti Airtel Ltd., Telemedia
 4134      877      21295         409   CHINANET-BACKBONE
 4808      842       1573         217   CNCGROUP IP network: China169
 9829      793        680          39   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     3913       3733         287   bellsouth.net, inc. 
 4323     3362       1113         394   Time Warner Telecom
 1785     1782        699         131   PaeTec Communications, Inc.
20115     1552       1512         659   Charter Communications 
 7018     1512       5735         962   AT&T WorldNet Services
 2386     1287        569         909   AT&T Data Communications Serv
 6478     1269        259          92   AT&T Worldnet Services 
 3356     1182      10890         406   Level 3 Communications, LLC 
22773     1162       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      634         56           6   United Telecom of Georgia
 3292      453       2026         394   TDC Tele Danmark
30890      442        111         205   Evolva Telecom
  702      412       1869         328   UUNET - Commercial IP service
 8551      402        355          38   Bezeq International
 8866      400        117          18   Bulgarian Telecommunication C
 3301      370       1414         325   TeliaNet Sweden
 3320      370       7073         321   Deutsche Telekom AG
34984      358         88         184   BILISIM TELEKOM
12479      335        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     1521       2965         244   UniNet S.A. de C.V. 
10620     1059        237         152   TVCABLE BOGOTA 
28573      901        745          81   NET Servicos de Comunicao S.A
 7303      724        374         132   Telecom Argentina Stet-France
 6503      642        173         209   AVANTEL, S.A. 
22047      545        310          15   VTR PUNTO NET S.A. 
 3816      480        208          76   Empresa Nacional de Telecomun
 7738      477        922          30   Telecomunicacoes da Bahia S.A
14420      463         32          67   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     1151        445          10   TEDATA
24863      716        147          39   LINKdotNET AS number
36992      642        278         186   Etisalat MISR
 3741      269        852         230   The Internet Solution 
33776      219         12          11   Starcomms Nigeria Limited
 2018      211        244          61   Tertiary Education Network 
 6713      195        186          16   Itissalat Al-MAGHRIB
24835      183         78          10   RAYA Telecom - Egypt
29571      175         19          10   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     3913       3733         287   bellsouth.net, inc. 
 4323     3362       1113         394   Time Warner Telecom
 4766     1849       8422         484   Korea Telecom (KIX)
 1785     1782        699         131   PaeTec Communications, Inc.
20115     1552       1512         659   Charter Communications 
 8151     1521       2965         244   UniNet S.A. de C.V. 
 7018     1512       5735         962   AT&T WorldNet Services
17488     1316        140         125   Hathway IP Over Cable Interne
 4755     1309        293         153   TATA Communications formerly 
 7545     1307        232         105   TPG Internet Pty Ltd

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

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

  ASN   No of nets  Net Savings Description
 4323      3362        2968      Time Warner Telecom
 1785      1782        1651      PaeTec Communications, Inc.
 4766      1849        1365      Korea Telecom (KIX)
 8151      1521        1277      UniNet S.A. de C.V. 
 7545      1307        1202      TPG Internet Pty Ltd
17488      1316        1191      Hathway IP Over Cable Interne
 6478      1269        1177      AT&T Worldnet Services 
 4755      1309        1156      TATA Communications formerly 
 8452      1151        1141      TEDATA
22773      1162        1097      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
41.76.160.0/21       37063     Roke Investments Internationa
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

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      /10:25      /11:67      /12:193     
/13:403     /14:699     /15:1279    /16:11105   /17:5301    /18:9023    
/19:18326   /20:22576   /21:22617   /22:29601   /23:29231   /24:168924  
/25:954     /26:1226    /27:617     /28:104     /29:10      /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2508          3913      bellsouth.net, inc. 
 4323     1852          3362      Time Warner Telecom
 4766     1480          1849      Korea Telecom (KIX)
 1785     1246          1782      PaeTec Communications, Inc.
11492     1065          1151      Cable One 
17488     1063          1316      Hathway IP Over Cable Interne
 8452     1045          1151      TEDATA
18566     1040          1059      Covad Communications 
10620      975          1059      TVCABLE BOGOTA 
 7018      910          1512      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        8:284      12:2007     13:11       14:1      
  15:23       16:3        17:8        20:21       24:1422     27:113    
  31:1        32:49       33:12       38:680      40:98       41:2432   
  44:3        47:26       52:8        55:9        56:2        57:25     
  58:739      59:504      60:458      61:1074     62:1070     63:1974   
  64:3617     65:2339     66:4249     67:1818     68:1107     69:2873   
  70:718      71:236      72:1832     73:2        74:2109     75:252    
  76:312      77:898      78:629      79:426      80:982      81:797    
  82:487      83:431      84:702      85:1040     86:459      87:694    
  88:334      89:1546     90:92       91:2800     92:508      93:1107   
  94:1416     95:610      96:281      97:323      98:562      99:28     
 108:32      109:526     110:427     111:517     112:261     113:296    
 114:418     115:549     116:1048    117:650     118:470     119:934    
 120:147     121:737     122:1450    123:926     124:1108    125:1313   
 128:210     129:217     130:193     131:555     132:250     133:17     
 134:195     135:45      136:229     137:168     138:257     139:104    
 140:510     141:137     142:348     143:388     144:468     145:50     
 146:440     147:166     148:648     149:299     150:152     151:166    
 152:285     153:168     154:2       155:328     156:158     157:324    
 158:107     159:376     160:316     161:179     162:254     163:171    
 164:408     165:331     166:467     167:401     168:786     169:165    
 170:707     171:57      172:2       173:818     174:607     175:90     
 176:1       178:165     180:488     182:109     183:224     184:58     
 186:466     187:343     188:1295    189:795     190:3770    192:5752   
 193:4707    194:3355    195:2757    196:1204    198:3585    199:3434   
 200:5354    201:1548    202:7978    203:8254    204:4064    205:2328   
 206:2515    207:3051    208:3889    209:3401    210:2494    211:1262   
 212:1750    213:1687    214:671     215:69      216:4659    217:1523   
 218:486     219:378     220:1136    221:398     222:304     223:1      


End of report




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