Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Sep 24 13:53:04 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 25 Sep, 2010

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

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

BGP routing table entries examined:                              331883
    Prefixes after maximum aggregation:                          152525
    Deaggregation factor:                                          2.18
    Unique aggregates announced to Internet:                     161648
Total ASes present in the Internet Routing Table:                 34863
    Prefixes per ASN:                                              9.52
Origin-only ASes present in the Internet Routing Table:           30227
Origin ASes announcing only one prefix:                           14677
Transit ASes present in the Internet Routing Table:                4636
Transit-only ASes present in the Internet Routing Table:            101
Average AS path length visible in the Internet Routing Table:       3.7
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (41664)                               21
Prefixes from unregistered ASNs in the Routing Table:              3160
    Unregistered ASNs in the Routing Table:                        1399
Number of 32-bit ASNs allocated by the RIRs:                        794
Prefixes from 32-bit ASNs in the Routing Table:                    1017
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            228
Number of addresses announced to Internet:                   2273798848
    Equivalent to 135 /8s, 135 /16s and 106 /24s
    Percentage of available address space announced:               61.3
    Percentage of allocated address space announced:               65.5
    Percentage of available address space allocated:               93.7
    Percentage of address space in use by end-sites:               84.9
Total number of prefixes smaller than registry allocations:      156837

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

Prefixes being announced by APNIC Region ASes:                    80968
    Total APNIC prefixes after maximum aggregation:               27719
    APNIC Deaggregation factor:                                    2.92
Prefixes being announced from the APNIC address blocks:           77853
    Unique aggregates announced from the APNIC address blocks:    32742
APNIC Region origin ASes present in the Internet Routing Table:    4196
    APNIC Prefixes per ASN:                                       18.55
APNIC Region origin ASes announcing only one prefix:               1167
APNIC Region transit ASes present in the Internet Routing Table:    648
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              551901216
    Equivalent to 32 /8s, 229 /16s and 88 /24s
    Percentage of available APNIC address space announced:         78.3

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:                    135903
    Total ARIN prefixes after maximum aggregation:                70118
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           108637
    Unique aggregates announced from the ARIN address blocks:     43091
ARIN Region origin ASes present in the Internet Routing Table:    13925
    ARIN Prefixes per ASN:                                         7.80
ARIN Region origin ASes announcing only one prefix:                5334
ARIN Region transit ASes present in the Internet Routing Table:    1380
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               734124576
    Equivalent to 43 /8s, 193 /16s and 218 /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:                     76059
    Total RIPE prefixes after maximum aggregation:                44153
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            69455
    Unique aggregates announced from the RIPE address blocks:     45623
RIPE Region origin ASes present in the Internet Routing Table:    14816
    RIPE Prefixes per ASN:                                         4.69
RIPE Region origin ASes announcing only one prefix:                7631
RIPE Region transit ASes present in the Internet Routing Table:    2237
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               439384960
    Equivalent to 26 /8s, 48 /16s and 123 /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:                   30249
    Total LACNIC prefixes after maximum aggregation:               7285
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:          28745
    Unique aggregates announced from the LACNIC address blocks:   15259
LACNIC Region origin ASes present in the Internet Routing Table:   1354
    LACNIC Prefixes per ASN:                                      21.23
LACNIC Region origin ASes announcing only one prefix:               422
LACNIC Region transit ASes present in the Internet Routing Table:   232
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              75452800
    Equivalent to 4 /8s, 127 /16s and 81 /24s
    Percentage of available LACNIC address space announced:        56.2

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:                   7427
    Total AfriNIC prefixes after maximum aggregation:              1881
    AfriNIC Deaggregation factor:                                  3.95
Prefixes being announced from the AfriNIC address blocks:          5745
    Unique aggregates announced from the AfriNIC address blocks:   1675
AfriNIC Region origin ASes present in the Internet Routing Table:   404
    AfriNIC Prefixes per ASN:                                     14.22
AfriNIC Region origin ASes announcing only one prefix:              123
AfriNIC Region transit ASes present in the Internet Routing Table:   93
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       17
Number of AfriNIC addresses announced to Internet:             20374016
    Equivalent to 1 /8s, 54 /16s and 226 /24s
    Percentage of available AfriNIC address space announced:       60.7

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     1859       9436         501   Korea Telecom (KIX)
 7545     1395        297          83   TPG Internet Pty Ltd
 4755     1348        368         160   TATA Communications formerly 
17488     1347        155         124   Hathway IP Over Cable Interne
17974     1240        299          70   PT TELEKOMUNIKASI INDONESIA
24560     1036        304         177   Bharti Airtel Ltd., Telemedia
 9583     1015         75         488   Sify Limited
 4808      932       1714         261   CNCGROUP IP network: China169
18101      883        100         132   Reliance Infocom Ltd Internet
 9829      823        692          33   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     3780       3667         278   bellsouth.net, inc. 
 4323     2708       1107         388   Time Warner Telecom
19262     1818       4676         286   Verizon Global Networks 
 1785     1797        698         132   PaeTec Communications, Inc.
20115     1494       1531         652   Charter Communications 
 7018     1461       5747         947   AT&T WorldNet Services
 6478     1352        275         123   AT&T Worldnet Services 
 2386     1293        554         912   AT&T Data Communications Serv
11492     1207        229          85   Cable One 
22773     1195       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      447       2026         388   TDC Tele Danmark
30890      442         99         211   Evolva Telecom
 8866      405        117          19   Bulgarian Telecommunication C
  702      404       1868         318   UUNET - Commercial IP service
 8551      402        353          46   Bezeq International
 3301      378       1688         333   TeliaNet Sweden
34984      376         90         185   BILISIM TELEKOM
 3320      373       7328         323   Deutsche Telekom AG
12479      361        576           5   Uni2 Autonomous System
31148      349         18          75   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     1341       2559         367   UniNet S.A. de C.V. 
10620     1319        247         148   TVCABLE BOGOTA 
28573     1114        869         108   NET Servicos de Comunicao S.A
 7303      809        424         103   Telecom Argentina Stet-France
 6503      746        223         258   AVANTEL, S.A. 
14420      580         38          76   CORPORACION NACIONAL DE TELEC
22047      558        310          15   VTR PUNTO NET S.A. 
 3816      482        209          95   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     1129        445          10   TEDATA
24863      728        147          39   LINKdotNET AS number
36992      660        279         178   Etisalat MISR
 3741      266        906         224   The Internet Solution 
 6713      203        199          12   Itissalat Al-MAGHRIB
29571      202         19          11   Ci Telecom Autonomous system 
 2018      197        277          64   Tertiary Education Network 
33776      197         12          14   Starcomms Nigeria Limited
24835      165         78           9   RAYA Telecom - Egypt
16637      154        440          92   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     3780       3667         278   bellsouth.net, inc. 
 4323     2708       1107         388   Time Warner Telecom
 4766     1859       9436         501   Korea Telecom (KIX)
19262     1818       4676         286   Verizon Global Networks 
 1785     1797        698         132   PaeTec Communications, Inc.
20115     1494       1531         652   Charter Communications 
 7018     1461       5747         947   AT&T WorldNet Services
 7545     1395        297          83   TPG Internet Pty Ltd
 6478     1352        275         123   AT&T Worldnet Services 
 4755     1348        368         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      2708        2320      Time Warner Telecom
 1785      1797        1665      PaeTec Communications, Inc.
19262      1818        1532      Verizon Global Networks 
 4766      1859        1358      Korea Telecom (KIX)
 7545      1395        1312      TPG Internet Pty Ltd
 6478      1352        1229      AT&T Worldnet Services 
17488      1347        1223      Hathway IP Over Cable Interne
 4755      1348        1188      TATA Communications formerly 
10620      1319        1171      TVCABLE BOGOTA 
17974      1240        1170      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
15040   UNALLOCATED  8.12.156.0/24         3356       Level 3 Communicatio
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 

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<<
41.223.196.0/24      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
46.20.80.0/20         5602     KPNQwest Italia S.p.a

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        /8:20       /9:10      /10:25      /11:67      /12:202     
/13:420     /14:730     /15:1318    /16:11289   /17:5447    /18:9267    
/19:18479   /20:23532   /21:23780   /22:31095   /23:30369   /24:172749  
/25:1048    /26:1163    /27:646     /28:170     /29:47      /30:3       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2407          3780      bellsouth.net, inc. 
 4766     1476          1859      Korea Telecom (KIX)
 4323     1367          2708      Time Warner Telecom
 1785     1259          1797      PaeTec Communications, Inc.
10620     1207          1319      TVCABLE BOGOTA 
11492     1099          1207      Cable One 
17488     1087          1347      Hathway IP Over Cable Interne
18566     1068          1087      Covad Communications 
 8452     1029          1129      TEDATA
24560      937          1036      Bharti Airtel Ltd., Telemedia

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

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

   1:72        2:13        4:13        8:310      12:2012     13:8      
  14:9        15:20       16:3        17:9        20:8        24:1365   
  27:345      31:1        32:61       33:12       38:702      40:97     
  41:2519     44:3        46:97       47:10       49:4        52:12     
  55:5        56:2        57:30       58:867      59:505      60:477    
  61:1080     62:1049     63:1964     64:3715     65:2305     66:4025   
  67:1841     68:1136     69:2800     70:739      71:374      72:1959   
  73:2        74:2312     75:285      76:318      77:873      78:645    
  79:418      80:1021     81:798      82:498      83:454      84:680    
  85:1035     86:431      87:688      88:314      89:1574     90:98     
  91:3061     92:429      93:995      94:1167     95:703      96:397    
  97:219      98:634      99:32      101:3       108:64      109:711    
 110:430     111:579     112:297     113:284     114:452     115:594    
 116:1102    117:659     118:526     119:881     120:158     121:709    
 122:1541    123:923     124:1222    125:1241    128:226     129:157    
 130:168     131:558     132:259     133:19      134:207     135:46     
 136:223     137:138     138:274     139:109     140:478     141:197    
 142:346     143:351     144:479     145:54      146:428     147:171    
 148:629     149:305     150:152     151:233     152:288     153:171    
 154:3       155:366     156:170     157:335     158:111     159:362    
 160:315     161:189     162:268     163:165     164:414     165:368    
 166:468     167:409     168:677     169:156     170:724     171:62     
 172:2       173:1052    174:531     175:171     176:1       177:1      
 178:498     180:654     181:1       182:210     183:254     184:160    
 186:647     187:469     188:819     189:786     190:4156    192:5779   
 193:4739    194:3430    195:2822    196:1200    198:3552    199:3594   
 200:5397    201:1583    202:8111    203:8288    204:3995    205:2394   
 206:2554    207:3054    208:3885    209:3492    210:2582    211:1301   
 212:1773    213:1684    214:674     215:66      216:4753    217:1579   
 218:473     219:399     220:1176    221:389     222:314     223:42     


End of report




More information about the NANOG mailing list