Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 8 14:12:02 CDT 2010


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

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 09 Oct, 2010

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

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

BGP routing table entries examined:                              332924
    Prefixes after maximum aggregation:                          152886
    Deaggregation factor:                                          2.18
    Unique aggregates announced to Internet:                     163608
Total ASes present in the Internet Routing Table:                 34937
    Prefixes per ASN:                                              9.53
Origin-only ASes present in the Internet Routing Table:           30306
Origin ASes announcing only one prefix:                           14711
Transit ASes present in the Internet Routing Table:                4631
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:                                      24
    Max AS path prepend of ASN (41664)                               21
Prefixes from unregistered ASNs in the Routing Table:              3825
    Unregistered ASNs in the Routing Table:                        1691
Number of 32-bit ASNs allocated by the RIRs:                        809
Prefixes from 32-bit ASNs in the Routing Table:                    1141
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            217
Number of addresses announced to Internet:                   2278375680
    Equivalent to 135 /8s, 205 /16s and 65 /24s
    Percentage of available address space announced:               61.5
    Percentage of allocated address space announced:               65.6
    Percentage of available address space allocated:               93.7
    Percentage of address space in use by end-sites:               85.1
Total number of prefixes smaller than registry allocations:      136876

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

Prefixes being announced by APNIC Region ASes:                    81350
    Total APNIC prefixes after maximum aggregation:               27868
    APNIC Deaggregation factor:                                    2.92
Prefixes being announced from the APNIC address blocks:           78281
    Unique aggregates announced from the APNIC address blocks:    34323
APNIC Region origin ASes present in the Internet Routing Table:    4200
    APNIC Prefixes per ASN:                                       18.64
APNIC Region origin ASes announcing only one prefix:               1172
APNIC Region transit ASes present in the Internet Routing Table:    647
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              551177312
    Equivalent to 32 /8s, 218 /16s and 76 /24s
    Percentage of available APNIC address space announced:         78.2

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:                    135954
    Total ARIN prefixes after maximum aggregation:                70173
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           108553
    Unique aggregates announced from the ARIN address blocks:     43351
ARIN Region origin ASes present in the Internet Routing Table:    13936
    ARIN Prefixes per ASN:                                         7.79
ARIN Region origin ASes announcing only one prefix:                5326
ARIN Region transit ASes present in the Internet Routing Table:    1381
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               737000992
    Equivalent to 43 /8s, 237 /16s and 190 /24s
    Percentage of available ARIN address space announced:          62.8

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:                     76620
    Total RIPE prefixes after maximum aggregation:                44371
    RIPE Deaggregation factor:                                     1.73
Prefixes being announced from the RIPE address blocks:            70070
    Unique aggregates announced from the RIPE address blocks:     45843
RIPE Region origin ASes present in the Internet Routing Table:    14868
    RIPE Prefixes per ASN:                                         4.71
RIPE Region origin ASes announcing only one prefix:                7661
RIPE Region transit ASes present in the Internet Routing Table:    2235
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               440693376
    Equivalent to 26 /8s, 68 /16s and 114 /24s
    Percentage of available RIPE address space announced:          77.3

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:                   30164
    Total LACNIC prefixes after maximum aggregation:               7163
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:          28958
    Unique aggregates announced from the LACNIC address blocks:   15115
LACNIC Region origin ASes present in the Internet Routing Table:   1361
    LACNIC Prefixes per ASN:                                      21.28
LACNIC Region origin ASes announcing only one prefix:               429
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:                        17
Number of LACNIC addresses announced to Internet:              76059264
    Equivalent to 4 /8s, 136 /16s and 146 /24s
    Percentage of available LACNIC address space announced:        56.7

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:                   7442
    Total AfriNIC prefixes after maximum aggregation:              1892
    AfriNIC Deaggregation factor:                                  3.93
Prefixes being announced from the AfriNIC address blocks:          5735
    Unique aggregates announced from the AfriNIC address blocks:   1696
AfriNIC Region origin ASes present in the Internet Routing Table:   406
    AfriNIC Prefixes per ASN:                                     14.13
AfriNIC Region origin ASes announcing only one prefix:              123
AfriNIC Region transit ASes present in the Internet Routing Table:   92
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       17
Number of AfriNIC addresses announced to Internet:             20856320
    Equivalent to 1 /8s, 62 /16s and 62 /24s
    Percentage of available AfriNIC address space announced:       62.2

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     1865       9437         510   Korea Telecom (KIX)
 7545     1412        297          82   TPG Internet Pty Ltd
 4755     1367        380         158   TATA Communications formerly 
17488     1360        156         122   Hathway IP Over Cable Interne
17974     1258        302          79   PT TELEKOMUNIKASI INDONESIA
24560     1045        303         180   Bharti Airtel Ltd., Telemedia
 9583     1033         77         497   Sify Limited
 4808      936       1714         261   CNCGROUP IP network: China169
18101      885        100         132   Reliance Infocom Ltd Internet
 9829      816        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     3774       3667         278   bellsouth.net, inc. 
 4323     2612       1108         390   Time Warner Telecom
 1785     1795        698         131   PaeTec Communications, Inc.
19262     1779       4833         279   Verizon Global Networks 
20115     1501       1519         649   Charter Communications 
 7018     1468       5729         941   AT&T WorldNet Services
 6478     1368        277         109   AT&T Worldnet Services 
 2386     1309        555         923   AT&T Data Communications Serv
11492     1222        230          71   Cable One 
22773     1204       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      450       2028         391   TDC Tele Danmark
 8866      419        119          24   Bulgarian Telecommunication C
  702      404       1869         318   UUNET - Commercial IP service
 8551      402        353          46   Bezeq International
34984      379         91         186   BILISIM TELEKOM
 3301      378       1688         334   TeliaNet Sweden
 3320      377       7329         328   Deutsche Telekom AG
30890      374         79         203   Evolva Telecom
12479      372        576           5   Uni2 Autonomous System
31148      353         19          77   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     1342       2571         368   UniNet S.A. de C.V. 
10620     1333        247         150   TVCABLE BOGOTA 
28573     1175        909          87   NET Servicos de Comunicao S.A
 7303      805        440          90   Telecom Argentina Stet-France
 6503      759        223         259   AVANTEL, S.A. 
27947      566         64          92   Telconet S.A
22047      558        310          15   VTR PUNTO NET S.A. 
14420      540         39          78   CORPORACION NACIONAL DE TELEC
 3816      484        210          95   Empresa Nacional de Telecomun
 7738      478        922          30   Telecomunicacoes da Bahia 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     1046        445          10   TEDATA
24863      738        147          39   LINKdotNET AS number
36992      651        279         174   Etisalat MISR
 3741      266        906         224   The Internet Solution 
 6713      203        199          12   Itissalat Al-MAGHRIB
29571      203         19          11   Ci Telecom Autonomous system 
 2018      197        277          64   Tertiary Education Network 
33776      196         12          14   Starcomms Nigeria Limited
16637      170        440          92   MTN Network Solutions
24835      165         78           9   RAYA Telecom - Egypt

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     3774       3667         278   bellsouth.net, inc. 
 4323     2612       1108         390   Time Warner Telecom
 4766     1865       9437         510   Korea Telecom (KIX)
 1785     1795        698         131   PaeTec Communications, Inc.
19262     1779       4833         279   Verizon Global Networks 
20115     1501       1519         649   Charter Communications 
 7018     1468       5729         941   AT&T WorldNet Services
 7545     1412        297          82   TPG Internet Pty Ltd
 6478     1368        277         109   AT&T Worldnet Services 
 4755     1367        380         158   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      2612        2222      Time Warner Telecom
 1785      1795        1664      PaeTec Communications, Inc.
19262      1779        1500      Verizon Global Networks 
 4766      1865        1355      Korea Telecom (KIX)
 7545      1412        1330      TPG Internet Pty Ltd
 6478      1368        1259      AT&T Worldnet Services 
17488      1360        1238      Hathway IP Over Cable Interne
 4755      1367        1209      TATA Communications formerly 
10620      1333        1183      TVCABLE BOGOTA 
17974      1258        1179      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
40331   UNALLOCATED  8.11.167.0/24         7018       AT&T WorldNet Servic
11946   UNALLOCATED  8.12.155.0/24        40913       Quality Technology S
15040   UNALLOCATED  8.12.156.0/24         3356       Level 3 Communicatio
53317   UNALLOCATED  8.14.38.0/24          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
23200   UNALLOCATED  8.20.243.0/24        25653       Pegasus Web Technolo
22015   UNALLOCATED  8.22.137.0/24        14989       Broadview Networks 

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
46.16.160.0/24       43584     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      /12:203     
/13:419     /14:733     /15:1327    /16:11300   /17:5483    /18:9304    
/19:18494   /20:23668   /21:23842   /22:31149   /23:30417   /24:173673  
/25:983     /26:1080    /27:564     /28:143     /29:12      /30:2       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2337          3774      bellsouth.net, inc. 
 4323     1408          2612      Time Warner Telecom
 6478     1332          1368      AT&T Worldnet Services 
10620     1221          1333      TVCABLE BOGOTA 
11492     1179          1222      Cable One 
 1785     1075          1795      PaeTec Communications, Inc.
 7011     1056          1156      Citizens Utilities 
18566     1039          1058      Covad Communications 
 8452      957          1046      TEDATA
19262      905          1779      Verizon Global Networks 

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

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

   1:78        2:17        4:13        8:313      12:2003     13:8      
  14:33       15:20       16:3        17:9        20:8        24:1379   
  27:361      31:1        32:61       33:12       38:701      40:97     
  41:2509     44:3        46:151      47:11       49:4        52:12     
  55:5        56:2        57:30       58:830      59:501      60:480    
  61:1087     62:1031     63:1974     64:3738     65:2329     66:4065   
  67:1847     68:1146     69:2849     70:755      71:375      72:1935   
  73:2        74:2308     75:288      76:322      77:876      78:696    
  79:432      80:1042     81:818      82:502      83:459      84:687    
  85:1039     86:433      87:693      88:323      89:1565     90:106    
  91:3098     92:437      93:1027     94:1109     95:746      96:385    
  97:220      98:630      99:32      101:3       108:64      109:715    
 110:436     111:584     112:293     113:288     114:475     115:603    
 116:1111    117:655     118:534     119:973     120:203     121:717    
 122:1565    123:914     124:1230    125:1270    128:227     129:157    
 130:170     131:559     132:273     133:20      134:207     135:46     
 136:214     137:140     138:276     139:109     140:478     141:196    
 142:348     143:384     144:479     145:54      146:428     147:173    
 148:616     149:305     150:148     151:233     152:295     153:172    
 154:3       155:368     156:169     157:317     158:113     159:359    
 160:313     161:190     162:269     163:166     164:422     165:368    
 166:468     167:418     168:679     169:157     170:708     171:63     
 172:2       173:1005    174:558     175:176     176:1       177:1      
 178:534     180:676     181:1       182:235     183:228     184:126    
 186:733     187:502     188:839     189:823     190:4124    192:5770   
 193:4739    194:3431    195:2830    196:1192    198:3544    199:3600   
 200:5408    201:1579    202:8172    203:8316    204:4019    205:2319   
 206:2542    207:3038    208:3882    209:3482    210:2553    211:1283   
 212:1762    213:1716    214:667     215:66      216:4786    217:1583   
 218:491     219:401     220:1168    221:427     222:341     223:51     


End of report




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