[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Dec 3 20:06:39 UTC 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.rand.apnic.net.

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 04 Dec, 2010

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

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

BGP routing table entries examined:                              337120
    Prefixes after maximum aggregation:                          152448
    Deaggregation factor:                                          2.21
    Unique aggregates announced to Internet:                     166104
Total ASes present in the Internet Routing Table:                 35395
    Prefixes per ASN:                                              9.52
Origin-only ASes present in the Internet Routing Table:           30484
Origin ASes announcing only one prefix:                           14904
Transit ASes present in the Internet Routing Table:                4911
Transit-only ASes present in the Internet Routing Table:            119
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      31
    Max AS path prepend of ASN (36992)                               29
Prefixes from unregistered ASNs in the Routing Table:               599
    Unregistered ASNs in the Routing Table:                         272
Number of 32-bit ASNs allocated by the RIRs:                        931
Prefixes from 32-bit ASNs in the Routing Table:                       4
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            189
Number of addresses announced to Internet:                   2314105824
    Equivalent to 137 /8s, 238 /16s and 115 /24s
    Percentage of available address space announced:               62.4
    Percentage of allocated address space announced:               64.5
    Percentage of available address space allocated:               96.8
    Percentage of address space in use by end-sites:               86.4
Total number of prefixes smaller than registry allocations:      138390

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

Prefixes being announced by APNIC Region ASes:                    83266
    Total APNIC prefixes after maximum aggregation:               28276
    APNIC Deaggregation factor:                                    2.94
Prefixes being announced from the APNIC address blocks:           80189
    Unique aggregates announced from the APNIC address blocks:    35123
APNIC Region origin ASes present in the Internet Routing Table:    4255
    APNIC Prefixes per ASN:                                       18.85
APNIC Region origin ASes announcing only one prefix:               1199
APNIC Region transit ASes present in the Internet Routing Table:    686
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         20
Number of APNIC addresses announced to Internet:              571205152
    Equivalent to 34 /8s, 11 /16s and 230 /24s
    Percentage of available APNIC address space announced:         77.4

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,  36/8,  42/8,  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:                    136457
    Total ARIN prefixes after maximum aggregation:                69829
    ARIN Deaggregation factor:                                     1.95
Prefixes being announced from the ARIN address blocks:           107499
    Unique aggregates announced from the ARIN address blocks:     43811
ARIN Region origin ASes present in the Internet Routing Table:    14051
    ARIN Prefixes per ASN:                                         7.65
ARIN Region origin ASes announcing only one prefix:                5385
ARIN Region transit ASes present in the Internet Routing Table:    1496
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          23
Number of ARIN addresses announced to Internet:               741381376
    Equivalent to 44 /8s, 48 /16s and 149 /24s
    Percentage of available ARIN address space announced:          62.2

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,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  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, 100/8,
                       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:                     78636
    Total RIPE prefixes after maximum aggregation:                45198
    RIPE Deaggregation factor:                                     1.74
Prefixes being announced from the RIPE address blocks:            72182
    Unique aggregates announced from the RIPE address blocks:     46814
RIPE Region origin ASes present in the Internet Routing Table:    15076
    RIPE Prefixes per ASN:                                         4.79
RIPE Region origin ASes announcing only one prefix:                7740
RIPE Region transit ASes present in the Internet Routing Table:    2341
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          30
Number of RIPE addresses announced to Internet:               448559424
    Equivalent to 26 /8s, 188 /16s and 121 /24s
    Percentage of available RIPE address space announced:          74.3

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,   5/8,  25/8,  31/8,  37/8,  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:                   30812
    Total LACNIC prefixes after maximum aggregation:               7123
    LACNIC Deaggregation factor:                                   4.33
Prefixes being announced from the LACNIC address blocks:          29537
    Unique aggregates announced from the LACNIC address blocks:   15338
LACNIC Region origin ASes present in the Internet Routing Table:   1406
    LACNIC Prefixes per ASN:                                      21.01
LACNIC Region origin ASes announcing only one prefix:               446
LACNIC Region transit ASes present in the Internet Routing Table:   244
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              78293760
    Equivalent to 4 /8s, 170 /16s and 171 /24s
    Percentage of available LACNIC address space announced:        58.3

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:                   7707
    Total AfriNIC prefixes after maximum aggregation:              1901
    AfriNIC Deaggregation factor:                                  4.05
Prefixes being announced from the AfriNIC address blocks:          5966
    Unique aggregates announced from the AfriNIC address blocks:   1755
AfriNIC Region origin ASes present in the Internet Routing Table:   423
    AfriNIC Prefixes per ASN:                                     14.10
AfriNIC Region origin ASes announcing only one prefix:              134
AfriNIC Region transit ASes present in the Internet Routing Table:   92
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC addresses announced to Internet:             21737728
    Equivalent to 1 /8s, 75 /16s and 177 /24s
    Percentage of available AfriNIC address space announced:       43.2

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 105/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1862       9449         512   Korea Telecom (KIX)
 7545     1467        299          80   TPG Internet Pty Ltd
 4755     1391        639         157   TATA Communications formerly 
17488     1371        157         121   Hathway IP Over Cable Interne
17974     1318        459          27   PT TELEKOMUNIKASI INDONESIA
 9583     1036         75         487   Sify Limited
24560     1030        309         166   Bharti Airtel Ltd., Telemedia
 4808      985       1715         268   CNCGROUP IP network: China169
18101      908        116         139   Reliance Infocom Ltd Internet
 9829      835        696          31   BSNL National Internet Backbo

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

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3736       3887         270   bellsouth.net, inc. 
 4323     2650       1088         402   Time Warner Telecom
19262     1833       4861         281   Verizon Global Networks 
 1785     1791        697         132   PaeTec Communications, Inc.
20115     1508       1530         636   Charter Communications 
 6478     1414        285         102   AT&T Worldnet Services 
 7018     1386       5671         884   AT&T WorldNet Services
 2386     1308        572         926   AT&T Data Communications Serv
22773     1256       2864          72   Cox Communications, Inc.
11492     1239        233          73   Cable One 

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

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6830      457       1757         271   UPC Distribution Services
 3292      443       2010         385   TDC Tele Danmark
 8866      430        133          23   Bulgarian Telecommunication C
34984      419         92         191   BILISIM TELEKOM
 9198      413        202          13   Kazakhtelecom Data Network Ad
 8551      402        353          46   Bezeq International
  702      396       1864         310   UUNET - Commercial IP service
12479      391        577           6   Uni2 Autonomous System
 3301      381       1696         336   TeliaNet Sweden
 3320      381       7317         334   Deutsche Telekom AG

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

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
10620     1344        250         156   TVCABLE BOGOTA 
 8151     1341       2627         365   UniNet S.A. de C.V. 
28573     1197        932          78   NET Servicos de Comunicao S.A
 6503     1170        355          80   AVANTEL, S.A. 
 7303      831        441         106   Telecom Argentina Stet-France
14420      579         49          87   CORPORACION NACIONAL DE TELEC
22047      563        310          15   VTR PUNTO NET S.A. 
 3816      493        214          97   Empresa Nacional de Telecomun
 7738      478        922          30   Telecomunicacoes da Bahia S.A
14117      452         32          30   Telefonica del Sur S.A. 

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

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8452     1108        445          10   TEDATA
24863      744        147          39   LINKdotNET AS number
36992      658        278         159   Etisalat MISR
 3741      263        986         225   The Internet Solution 
 6713      203        199          12   Itissalat Al-MAGHRIB
24835      198         78          10   RAYA Telecom - Egypt
29571      197         19          11   Ci Telecom Autonomous system 
 2018      196        277          64   Tertiary Education Network 
33776      195         12          14   Starcomms Nigeria Limited
16637      162        440          89   MTN Network Solutions

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

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3736       3887         270   bellsouth.net, inc. 
 4323     2650       1088         402   Time Warner Telecom
 4766     1862       9449         512   Korea Telecom (KIX)
19262     1833       4861         281   Verizon Global Networks 
 1785     1791        697         132   PaeTec Communications, Inc.
20115     1508       1530         636   Charter Communications 
 7545     1467        299          80   TPG Internet Pty Ltd
 6478     1414        285         102   AT&T Worldnet Services 
 4755     1391        639         157   TATA Communications formerly 
 7018     1386       5671         884   AT&T WorldNet Services

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

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

  ASN   No of nets  Net Savings Description
 4323      2650        2248      Time Warner Telecom
 1785      1791        1659      PaeTec Communications, Inc.
19262      1833        1552      Verizon Global Networks 
 7545      1467        1387      TPG Internet Pty Ltd
 4766      1862        1350      Korea Telecom (KIX)
 6478      1414        1312      AT&T Worldnet Services 
17974      1318        1291      PT TELEKOMUNIKASI INDONESIA
17488      1371        1250      Hathway IP Over Cable Interne
 4755      1391        1234      TATA Communications formerly 
10620      1344        1188      TVCABLE BOGOTA 

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

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

Bad AS  Designation  Network              Transit AS  Description
46164   UNALLOCATED  4.23.88.0/24          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.23.89.0/24          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.23.92.0/23          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.23.94.0/23          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.38.0.0/21           7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.38.8.0/21           7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.43.50.0/24          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.43.51.0/24          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.67.96.0/21          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.67.104.0/21         7018       AT&T WorldNet Servic

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

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
5.0.0.0/16           12654     RIPE NCC RIS Project
5.1.0.0/21           12654     RIPE NCC RIS Project
5.1.24.0/24          12654     RIPE NCC RIS Project
37.0.0.0/16          12654     RIPE NCC RIS Project
37.1.0.0/21          12654     RIPE NCC RIS Project
37.1.24.0/24         12654     RIPE NCC RIS Project
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
46.183.72.0/21       51941     >>UNKNOWN<<
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 

Complete listing at http://thyme.rand.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      /11:70      /12:210     
/13:428     /14:749     /15:1336    /16:11346   /17:5491    /18:9149    
/19:18581   /20:23839   /21:24131   /22:31737   /23:30519   /24:176659  
/25:981     /26:1076    /27:587     /28:155     /29:12      /30:2       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2306          3736      bellsouth.net, inc. 
 4323     1431          2650      Time Warner Telecom
 6478     1372          1414      AT&T Worldnet Services 
10620     1236          1344      TVCABLE BOGOTA 
11492     1197          1239      Cable One 
18566     1070          1089      Covad Communications 
 7011     1069          1171      Citizens Utilities 
 1785     1065          1791      PaeTec Communications, Inc.
 8452      973          1108      TEDATA
 6503      955          1170      AVANTEL, S.A. 

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

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

   1:105       2:24        4:13        5:1         8:316      12:2024   
  13:6        14:83       15:17       16:3        17:8        20:10     
  24:1415     27:466      32:61       33:7        34:2        36:1      
  37:1        38:712      40:101      41:2642     42:1        44:3      
  46:306      47:10       49:34       50:16       52:12       55:7      
  56:2        57:29       58:857      59:501      60:482      61:1108   
  62:1020     63:1943     64:3708     65:2320     66:4089     67:1755   
  68:999      69:2819     70:717      71:389      72:1923     74:2282   
  75:287      76:319      77:865      78:691      79:435      80:1056   
  81:799      82:508      83:445      84:631      85:1030     86:490    
  87:703      88:395      89:1582     90:128      91:3272     92:455    
  93:1014     94:1097     95:686      96:405      97:244      98:695    
  99:33      101:3       107:2       108:69      109:771     110:426    
 111:667     112:310     113:318     114:479     115:646     116:1133   
 117:658     118:582     119:1013    120:182     121:713     122:1543   
 123:972     124:1227    125:1282    128:228     129:152     130:171    
 131:565     132:234     133:20      134:208     135:46      136:213    
 137:146     138:288     139:109     140:480     141:195     142:348    
 143:524     144:485     145:54      146:426     147:178     148:641    
 149:328     150:149     151:231     152:294     153:173     154:3      
 155:367     156:167     157:339     158:126     159:366     160:308    
 161:199     162:276     163:166     164:433     165:332     166:466    
 167:422     168:709     169:151     170:724     171:67      172:2      
 173:1124    174:431     175:256     176:1       178:652     180:713    
 182:523     183:242     184:185     186:886     187:749     188:875    
 189:1017    190:4229    192:5777    193:4801    194:3470    195:2888   
 196:1222    197:1       198:3533    199:3660    200:5485    201:1575   
 202:8254    203:8356    204:4046    205:2337    206:2518    207:2979   
 208:3857    209:3458    210:2535    211:1307    212:1801    213:1721   
 214:704     215:62      216:4748    217:1606    218:518     219:399    
 220:1184    221:436     222:342     223:76     

End of report



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