Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 17 13:48:06 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 18 Sep, 2010

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

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

BGP routing table entries examined:                              331135
    Prefixes after maximum aggregation:                          152252
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     162663
Total ASes present in the Internet Routing Table:                 34823
    Prefixes per ASN:                                              9.51
Origin-only ASes present in the Internet Routing Table:           30197
Origin ASes announcing only one prefix:                           14661
Transit ASes present in the Internet Routing Table:                4626
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:              2711
    Unregistered ASNs in the Routing Table:                        1247
Number of 32-bit ASNs allocated by the RIRs:                        777
Prefixes from 32-bit ASNs in the Routing Table:                    1013
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            195
Number of addresses announced to Internet:                   2269815744
    Equivalent to 135 /8s, 74 /16s and 163 /24s
    Percentage of available address space announced:               61.2
    Percentage of allocated address space announced:               65.4
    Percentage of available address space allocated:               93.7
    Percentage of address space in use by end-sites:               84.8
Total number of prefixes smaller than registry allocations:      156540

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

Prefixes being announced by APNIC Region ASes:                    80501
    Total APNIC prefixes after maximum aggregation:               27663
    APNIC Deaggregation factor:                                    2.91
Prefixes being announced from the APNIC address blocks:           77482
    Unique aggregates announced from the APNIC address blocks:    34148
APNIC Region origin ASes present in the Internet Routing Table:    4193
    APNIC Prefixes per ASN:                                       18.48
APNIC Region origin ASes announcing only one prefix:               1170
APNIC Region transit ASes present in the Internet Routing Table:    649
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              548634656
    Equivalent to 32 /8s, 179 /16s and 128 /24s
    Percentage of available APNIC address space announced:         77.9

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:                    135830
    Total ARIN prefixes after maximum aggregation:                70008
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           108483
    Unique aggregates announced from the ARIN address blocks:     42882
ARIN Region origin ASes present in the Internet Routing Table:    13915
    ARIN Prefixes per ASN:                                         7.80
ARIN Region origin ASes announcing only one prefix:                5331
ARIN Region transit ASes present in the Internet Routing Table:    1382
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               733654048
    Equivalent to 43 /8s, 186 /16s and 172 /24s
    Percentage of available ARIN address space announced:          62.5

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:                     76004
    Total RIPE prefixes after maximum aggregation:                44137
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            69440
    Unique aggregates announced from the RIPE address blocks:     45491
RIPE Region origin ASes present in the Internet Routing Table:    14793
    RIPE Prefixes per ASN:                                         4.69
RIPE Region origin ASes announcing only one prefix:                7615
RIPE Region transit ASes present in the Internet Routing Table:    2223
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               439134848
    Equivalent to 26 /8s, 44 /16s and 170 /24s
    Percentage of available RIPE address space announced:          77.0

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:                   30120
    Total LACNIC prefixes after maximum aggregation:               7214
    LACNIC Deaggregation factor:                                   4.18
Prefixes being announced from the LACNIC address blocks:          28673
    Unique aggregates announced from the LACNIC address blocks:   15258
LACNIC Region origin ASes present in the Internet Routing Table:   1350
    LACNIC Prefixes per ASN:                                      21.24
LACNIC Region origin ASes announcing only one prefix:               421
LACNIC Region transit ASes present in the Internet Routing Table:   235
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              75506304
    Equivalent to 4 /8s, 128 /16s and 34 /24s
    Percentage of available LACNIC address space announced:        56.3

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:                   7414
    Total AfriNIC prefixes after maximum aggregation:              1892
    AfriNIC Deaggregation factor:                                  3.92
Prefixes being announced from the AfriNIC address blocks:          5721
    Unique aggregates announced from the AfriNIC address blocks:   1674
AfriNIC Region origin ASes present in the Internet Routing Table:   405
    AfriNIC Prefixes per ASN:                                     14.13
AfriNIC Region origin ASes announcing only one prefix:              124
AfriNIC Region transit ASes present in the Internet Routing Table:   90
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             20253184
    Equivalent to 1 /8s, 53 /16s and 10 /24s
    Percentage of available AfriNIC address space announced:       60.4

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     1860       9436         501   Korea Telecom (KIX)
 7545     1369        298          84   TPG Internet Pty Ltd
 4755     1346        370         160   TATA Communications formerly 
17488     1346        153         123   Hathway IP Over Cable Interne
17974     1234        298          70   PT TELEKOMUNIKASI INDONESIA
24560     1029        304         177   Bharti Airtel Ltd., Telemedia
 9583     1016         76         490   Sify Limited
 4808      931       1713         260   CNCGROUP IP network: China169
18101      879         99         131   Reliance Infocom Ltd Internet
 9829      821        691          36   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     3792       3667         278   bellsouth.net, inc. 
 4323     2702       1107         390   Time Warner Telecom
19262     1816       4668         286   Verizon Global Networks 
 1785     1793        698         131   PaeTec Communications, Inc.
20115     1494       1529         653   Charter Communications 
 7018     1459       5732         946   AT&T WorldNet Services
 6478     1341        274         132   AT&T Worldnet Services 
 2386     1293        554         911   AT&T Data Communications Serv
11492     1194        228          89   Cable One 
22773     1193       2858          61   Cox Communications, Inc.

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      448       2026         389   TDC Tele Danmark
30890      439         99         209   Evolva Telecom
  702      409       1869         323   UUNET - Commercial IP service
 8866      403        117          19   Bulgarian Telecommunication C
 8551      402        353          46   Bezeq International
 3301      376       1672         331   TeliaNet Sweden
34984      374         90         185   BILISIM TELEKOM
 3320      371       7328         323   Deutsche Telekom AG
12479      360        576           5   Uni2 Autonomous System
31148      338         18          79   FreeNet ISP

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     1381       2655         343   UniNet S.A. de C.V. 
10620     1319        247         148   TVCABLE BOGOTA 
28573     1095        866         109   NET Servicos de Comunicao S.A
 7303      794        408         101   Telecom Argentina Stet-France
 6503      772        193         277   AVANTEL, S.A. 
14420      578         37          74   CORPORACION NACIONAL DE TELEC
22047      559        310          15   VTR PUNTO NET S.A. 
 3816      480        209          94   Empresa Nacional de Telecomun
 7738      477        922          30   Telecomunicacoes da Bahia S.A
11172      444         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     1152        445          10   TEDATA
24863      728        147          39   LINKdotNET AS number
36992      661        279         176   Etisalat MISR
 3741      266        906         224   The Internet Solution 
 6713      203        199          12   Itissalat Al-MAGHRIB
29571      200         19          11   Ci Telecom Autonomous system 
 2018      197        277          64   Tertiary Education Network 
33776      196         12          14   Starcomms Nigeria Limited
24835      165         78           9   RAYA Telecom - Egypt
16637      155        440          93   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     3792       3667         278   bellsouth.net, inc. 
 4323     2702       1107         390   Time Warner Telecom
 4766     1860       9436         501   Korea Telecom (KIX)
19262     1816       4668         286   Verizon Global Networks 
 1785     1793        698         131   PaeTec Communications, Inc.
20115     1494       1529         653   Charter Communications 
 7018     1459       5732         946   AT&T WorldNet Services
 8151     1381       2655         343   UniNet S.A. de C.V. 
 7545     1369        298          84   TPG Internet Pty Ltd
 4755     1346        370         160   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      2702        2312      Time Warner Telecom
 1785      1793        1662      PaeTec Communications, Inc.
19262      1816        1530      Verizon Global Networks 
 4766      1860        1359      Korea Telecom (KIX)
 7545      1369        1285      TPG Internet Pty Ltd
17488      1346        1223      Hathway IP Over Cable Interne
 6478      1341        1209      AT&T Worldnet Services 
 4755      1346        1186      TATA Communications formerly 
10620      1319        1171      TVCABLE BOGOTA 
17974      1234        1164      PT TELEKOMUNIKASI INDONESIA

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

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

Bad AS  Designation  Network              Transit AS  Description
11946   UNALLOCATED  8.12.155.0/24        40913       Quality Technology S
33084   UNALLOCATED  8.15.195.0/24         3356       Level 3 Communicatio
18826   UNALLOCATED  8.17.208.0/20         2828       XO Communications 
16734   UNALLOCATED  8.18.204.0/24        26914       Global Netoptex, Inc
53562   UNALLOCATED  8.19.94.0/24          3356       Level 3 Communicatio
22015   UNALLOCATED  8.22.137.0/24        14989       Broadview Networks 
46856   UNALLOCATED  8.22.184.0/22         3356       Level 3 Communicatio
21893   UNALLOCATED  8.26.33.0/24          3356       Level 3 Communicatio
26169   UNALLOCATED  8.225.177.0/24       20225       TelJet 
32249   UNALLOCATED  8.225.178.0/24        3356       Level 3 Communicatio

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<<
41.223.196.0/24      36990     Alkan Telecom Ltd
41.223.197.0/24      36990     Alkan Telecom Ltd
41.223.198.0/24      36990     Alkan Telecom Ltd
41.223.199.0/24      36990     Alkan Telecom Ltd
46.45.128.0/21       42926     RIPE Network Coordination Cen
46.45.136.0/21       42926     RIPE Network Coordination Cen

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      /12:201     
/13:419     /14:730     /15:1320    /16:11275   /17:5437    /18:9283    
/19:18511   /20:23458   /21:23639   /22:30953   /23:30252   /24:172587  
/25:1015    /26:1124    /27:583     /28:167     /29:47      /30:6       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2418          3792      bellsouth.net, inc. 
 4766     1477          1860      Korea Telecom (KIX)
 4323     1367          2702      Time Warner Telecom
 1785     1256          1793      PaeTec Communications, Inc.
10620     1207          1319      TVCABLE BOGOTA 
11492     1096          1194      Cable One 
17488     1087          1346      Hathway IP Over Cable Interne
18566     1068          1087      Covad Communications 
 8452     1044          1152      TEDATA
24560      930          1029      Bharti Airtel Ltd., Telemedia

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

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

   1:71        2:11        4:13        8:307      12:2012     13:8      
  14:4        15:20       16:3        17:9        20:8        24:1393   
  27:339      31:1        32:61       33:12       38:701      40:97     
  41:2526     44:3        46:72       47:13       49:1        52:12     
  55:6        56:2        57:29       58:827      59:497      60:474    
  61:1081     62:1020     63:1968     64:3722     65:2300     66:3998   
  67:1862     68:1136     69:2797     70:739      71:372      72:1948   
  73:2        74:2326     75:284      76:329      77:906      78:647    
  79:414      80:1011     81:781      82:496      83:445      84:680    
  85:1036     86:432      87:682      88:324      89:1562     90:96     
  91:3044     92:426      93:992      94:1419     95:705      96:380    
  97:219      98:623      99:34      101:1       108:64      109:667    
 110:502     111:580     112:298     113:291     114:453     115:587    
 116:1098    117:658     118:510     119:869     120:137     121:703    
 122:1541    123:918     124:1221    125:1242    128:226     129:157    
 130:170     131:541     132:258     133:20      134:201     135:46     
 136:223     137:138     138:273     139:109     140:479     141:197    
 142:345     143:353     144:475     145:54      146:428     147:169    
 148:630     149:294     150:152     151:233     152:288     153:170    
 154:3       155:365     156:169     157:335     158:112     159:359    
 160:313     161:190     162:268     163:167     164:418     165:370    
 166:468     167:413     168:666     169:156     170:727     171:61     
 172:2       173:1078    174:500     175:169     176:1       177:1      
 178:483     180:648     181:1       182:211     183:254     184:156    
 186:644     187:479     188:809     189:811     190:4139    192:5775   
 193:4736    194:3435    195:2798    196:1188    198:3557    199:3579   
 200:5398    201:1578    202:8098    203:8290    204:3996    205:2383   
 206:2537    207:3065    208:3868    209:3469    210:2560    211:1307   
 212:1742    213:1684    214:673     215:66      216:4753    217:1573   
 218:473     219:398     220:1176    221:386     222:316     223:45     


End of report




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