Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Aug 13 13:19:28 CDT 2010


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
CaribNOG and the RIPE Routing Working Group.

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 14 Aug, 2010

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

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

BGP routing table entries examined:                              327733
    Prefixes after maximum aggregation:                          151079
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     160689
Total ASes present in the Internet Routing Table:                 34560
    Prefixes per ASN:                                              9.48
Origin-only ASes present in the Internet Routing Table:           29983
Origin ASes announcing only one prefix:                           14554
Transit ASes present in the Internet Routing Table:                4577
Transit-only ASes present in the Internet Routing Table:            101
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:               860
    Unregistered ASNs in the Routing Table:                         433
Number of 32-bit ASNs allocated by the RIRs:                        727
Prefixes from 32-bit ASNs in the Routing Table:                     904
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            176
Number of addresses announced to Internet:                   2288066240
    Equivalent to 136 /8s, 97 /16s and 30 /24s
    Percentage of available address space announced:               61.7
    Percentage of allocated address space announced:               65.9
    Percentage of available address space allocated:               93.7
    Percentage of address space in use by end-sites:               84.2
Total number of prefixes smaller than registry allocations:      155492

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

Prefixes being announced by APNIC Region ASes:                    79750
    Total APNIC prefixes after maximum aggregation:               27336
    APNIC Deaggregation factor:                                    2.92
Prefixes being announced from the APNIC address blocks:           76668
    Unique aggregates announced from the APNIC address blocks:    33794
APNIC Region origin ASes present in the Internet Routing Table:    4155
    APNIC Prefixes per ASN:                                       18.45
APNIC Region origin ASes announcing only one prefix:               1159
APNIC Region transit ASes present in the Internet Routing Table:    641
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              539648800
    Equivalent to 32 /8s, 42 /16s and 99 /24s
    Percentage of available APNIC address space announced:         76.6

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,  49/8,  58/8,  59/8,
                        60/8,  61/8, 101/8, 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:                    135111
    Total ARIN prefixes after maximum aggregation:                69791
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           107970
    Unique aggregates announced from the ARIN address blocks:     42371
ARIN Region origin ASes present in the Internet Routing Table:    13847
    ARIN Prefixes per ASN:                                         7.80
ARIN Region origin ASes announcing only one prefix:                5310
ARIN Region transit ASes present in the Internet Routing Table:    1364
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               731174304
    Equivalent to 43 /8s, 148 /16s and 213 /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:                     74801
    Total RIPE prefixes after maximum aggregation:                43787
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            68193
    Unique aggregates announced from the RIPE address blocks:     44831
RIPE Region origin ASes present in the Internet Routing Table:    14675
    RIPE Prefixes per ASN:                                         4.65
RIPE Region origin ASes announcing only one prefix:                7553
RIPE Region transit ASes present in the Internet Routing Table:    2201
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               434991872
    Equivalent to 25 /8s, 237 /16s and 115 /24s
    Percentage of available RIPE address space announced:          76.3

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:                   29552
    Total LACNIC prefixes after maximum aggregation:               7056
    LACNIC Deaggregation factor:                                   4.19
Prefixes being announced from the LACNIC address blocks:          28053
    Unique aggregates announced from the LACNIC address blocks:   14979
LACNIC Region origin ASes present in the Internet Routing Table:   1321
    LACNIC Prefixes per ASN:                                      21.24
LACNIC Region origin ASes announcing only one prefix:               407
LACNIC Region transit ASes present in the Internet Routing Table:   235
Average LACNIC Region AS path length visible:                       3.9
    Max LACNIC Region AS path length visible:                        20
Number of LACNIC addresses announced to Internet:              76476928
    Equivalent to 4 /8s, 142 /16s and 242 /24s
    Percentage of available LACNIC address space announced:        57.0

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:                   7368
    Total AfriNIC prefixes after maximum aggregation:              1881
    AfriNIC Deaggregation factor:                                  3.92
Prefixes being announced from the AfriNIC address blocks:          5700
    Unique aggregates announced from the AfriNIC address blocks:   1657
AfriNIC Region origin ASes present in the Internet Routing Table:   392
    AfriNIC Prefixes per ASN:                                     14.54
AfriNIC Region origin ASes announcing only one prefix:              125
AfriNIC Region transit ASes present in the Internet Routing Table:   89
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             19938304
    Equivalent to 1 /8s, 48 /16s and 60 /24s
    Percentage of available AfriNIC address space announced:       59.4

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     1862       8410         495   Korea Telecom (KIX)
 4755     1481        298         164   TATA Communications formerly 
 7545     1376        234          87   TPG Internet Pty Ltd
17488     1343        149         127   Hathway IP Over Cable Interne
17974     1216        292          74   PT TELEKOMUNIKASI INDONESIA
24560     1005        304         181   Bharti Airtel Ltd., Telemedia
 9583     1003         74         487   Sify Limited
 4808      899       1671         245   CNCGROUP IP network: China169
 9829      818        687          34   BSNL National Internet Backbo
 4134      787      22220         415   CHINANET-BACKBONE

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     3856       3684         276   bellsouth.net, inc. 
 4323     2730       1116         393   Time Warner Telecom
19262     1946       4613         279   Verizon Global Networks 
 1785     1785        698         129   PaeTec Communications, Inc.
20115     1489       1526         653   Charter Communications 
 7018     1478       5734         952   AT&T WorldNet Services
 6478     1289        255         145   AT&T Worldnet Services 
 2386     1284        553         907   AT&T Data Communications Serv
22773     1176       2858          61   Cox Communications, Inc.
11492     1175        209          90   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
 3292      449       2026         390   TDC Tele Danmark
30890      443         99         211   Evolva Telecom
  702      414       1870         326   UUNET - Commercial IP service
 8866      403        117          18   Bulgarian Telecommunication C
 8551      401        353          46   Bezeq International
 3320      376       7329         325   Deutsche Telekom AG
 3301      373       1415         328   TeliaNet Sweden
34984      367         89         183   BILISIM TELEKOM
12479      352        576           5   Uni2 Autonomous System
 3215      322       3218          94   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     1527       3049         247   UniNet S.A. de C.V. 
10620     1091        244         150   TVCABLE BOGOTA 
28573     1067        833         111   NET Servicos de Comunicao S.A
 6503      811        187         264   AVANTEL, S.A. 
 7303      788        408          99   Telecom Argentina Stet-France
22047      550        310          15   VTR PUNTO NET S.A. 
14420      547         35          75   CORPORACION NACIONAL DE TELEC
 7738      477        922          30   Telecomunicacoes da Bahia S.A
 3816      474        208          98   Empresa Nacional de Telecomun
11172      447         99          76   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     1168        445          10   TEDATA
24863      728        147          39   LINKdotNET AS number
36992      655        279         183   Etisalat MISR
 3741      270        898         232   The Internet Solution 
33776      206         12          12   Starcomms Nigeria Limited
 2018      197        277          64   Tertiary Education Network 
 6713      195        186          16   Itissalat Al-MAGHRIB
29571      192         19          11   Ci Telecom Autonomous system 
24835      188         78           9   RAYA Telecom - Egypt
16637      147        440          95   MTN Network Solutions

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     3856       3684         276   bellsouth.net, inc. 
 4323     2730       1116         393   Time Warner Telecom
19262     1946       4613         279   Verizon Global Networks 
 4766     1862       8410         495   Korea Telecom (KIX)
 1785     1785        698         129   PaeTec Communications, Inc.
 8151     1527       3049         247   UniNet S.A. de C.V. 
20115     1489       1526         653   Charter Communications 
 4755     1481        298         164   TATA Communications formerly 
 7018     1478       5734         952   AT&T WorldNet Services
 7545     1376        234          87   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      2730        2337      Time Warner Telecom
19262      1946        1667      Verizon Global Networks 
 1785      1785        1656      PaeTec Communications, Inc.
 4766      1862        1367      Korea Telecom (KIX)
 4755      1481        1317      TATA Communications formerly 
 7545      1376        1289      TPG Internet Pty Ltd
 8151      1527        1280      UniNet S.A. de C.V. 
17488      1343        1216      Hathway IP Over Cable Interne
 8452      1168        1158      TEDATA
 6478      1289        1144      AT&T Worldnet Services 

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS  Designation  Network              Transit AS  Description
22015   UNALLOCATED  8.22.137.0/24        14989       Broadview Networks 
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
23054   UNALLOCATED  12.18.240.0/24        7018       AT&T WorldNet Servic
33198   UNALLOCATED  12.19.149.0/24         701       UUNET Technologies, 
36178   UNALLOCATED  12.20.60.0/23         6128       Cablevision Systems 
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

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        /8:21       /9:10      /10:25      /11:67      /12:198     
/13:412     /14:718     /15:1304    /16:11200   /17:5397    /18:9236    
/19:18562   /20:23299   /21:23290   /22:30291   /23:29761   /24:170761  
/25:1058    /26:1205    /27:741     /28:117     /29:47      /30:6       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2466          3856      bellsouth.net, inc. 
 4766     1488          1862      Korea Telecom (KIX)
 4323     1393          2730      Time Warner Telecom
 1785     1252          1785      PaeTec Communications, Inc.
17488     1086          1343      Hathway IP Over Cable Interne
11492     1083          1175      Cable One 
18566     1068          1087      Covad Communications 
 8452     1057          1168      TEDATA
10620     1005          1091      TVCABLE BOGOTA 
19262      913          1946      Verizon Global Networks 

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

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

   1:44        2:2         4:13        8:294      12:2016     13:7      
  14:1        15:21       16:3        17:9        20:6        24:1442   
  27:294      31:1        32:61       33:22       38:695      40:97     
  41:2504     44:3        46:23       47:16       52:12       55:7      
  56:2        57:28       58:780      59:508      60:460      61:1073   
  62:1059     63:1972     64:3730     65:2321     66:4026     67:1838   
  68:1102     69:2765     70:744      71:444      72:1944     73:2      
  74:2303     75:253      76:326      77:890      78:620      79:433    
  80:1015     81:801      82:499      83:488      84:689      85:1043   
  86:461      87:690      88:304      89:1526     90:99       91:2959   
  92:412      93:1000     94:1173     95:667      96:530      97:212    
  98:626      99:33      108:109     109:614     110:435     111:537    
 112:281     113:310     114:435     115:576     116:1094    117:654    
 118:490     119:889     120:139     121:725     122:1531    123:953    
 124:1129    125:1242    128:227     129:162     130:194     131:558    
 132:247     133:16      134:195     135:45      136:240     137:136    
 138:270     139:105     140:477     141:197     142:340     143:376    
 144:473     145:52      146:425     147:171     148:676     149:272    
 150:154     151:228     152:297     153:168     154:3       155:358    
 156:166     157:327     158:119     159:361     160:316     161:180    
 162:252     163:173     164:413     165:366     166:463     167:413    
 168:646     169:159     170:716     171:59      172:2       173:978    
 174:516     175:160     176:1       177:1       178:341     180:514    
 181:1       182:179     183:239     184:147     186:549     187:418    
 188:806     189:765     190:3899    192:5755    193:4732    194:3400   
 195:2790    196:1181    198:3567    199:3534    200:5354    201:1588   
 202:8016    203:8273    204:4035    205:2403    206:2484    207:3067   
 208:3881    209:3470    210:2546    211:1305    212:1719    213:1675   
 214:659     215:69      216:4679    217:1546    218:502     219:379    
 220:1139    221:402     222:316     223:2      

End of report




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