Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 6 14:09:20 CDT 2012


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,
TRNOG, 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 <pfsinoz at gmail.com>.

Routing Table Report   04:00 +10GMT Sat 07 Jul, 2012

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

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

BGP routing table entries examined:                              416013
    Prefixes after maximum aggregation:                          175712
    Deaggregation factor:                                          2.37
    Unique aggregates announced to Internet:                     202545
Total ASes present in the Internet Routing Table:                 41442
    Prefixes per ASN:                                             10.04
Origin-only ASes present in the Internet Routing Table:           33316
Origin ASes announcing only one prefix:                           15667
Transit ASes present in the Internet Routing Table:                5555
Transit-only ASes present in the Internet Routing Table:            133
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      27
    Max AS path prepend of ASN ( 51742)                              24
Prefixes from unregistered ASNs in the Routing Table:               391
    Unregistered ASNs in the Routing Table:                         124
Number of 32-bit ASNs allocated by the RIRs:                       2945
Number of 32-bit ASNs visible in the Routing Table:                2571
Prefixes from 32-bit ASNs in the Routing Table:                    6623
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            166
Number of addresses announced to Internet:                   2562615596
    Equivalent to 152 /8s, 190 /16s and 105 /24s
    Percentage of available address space announced:               69.1
    Percentage of allocated address space announced:               69.2
    Percentage of available address space allocated:               99.9
    Percentage of address space in use by end-sites:               93.1
Total number of prefixes smaller than registry allocations:      144059

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

Prefixes being announced by APNIC Region ASes:                   101846
    Total APNIC prefixes after maximum aggregation:               32701
    APNIC Deaggregation factor:                                    3.11
Prefixes being announced from the APNIC address blocks:          102276
    Unique aggregates announced from the APNIC address blocks:    42093
APNIC Region origin ASes present in the Internet Routing Table:    4713
    APNIC Prefixes per ASN:                                       21.70
APNIC Region origin ASes announcing only one prefix:               1240
APNIC Region transit ASes present in the Internet Routing Table:    752
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         24
Number of APNIC region 32-bit ASNs visible in the Routing Table:    243
Number of APNIC addresses announced to Internet:              704055168
    Equivalent to 41 /8s, 247 /16s and 7 /24s
    Percentage of available APNIC address space announced:         82.3

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-133119
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 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, 150/8, 153/8,
                       163/8, 171/8, 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:                    152288
    Total ARIN prefixes after maximum aggregation:                77420
    ARIN Deaggregation factor:                                     1.97
Prefixes being announced from the ARIN address blocks:           153251
    Unique aggregates announced from the ARIN address blocks:     68354
ARIN Region origin ASes present in the Internet Routing Table:    15188
    ARIN Prefixes per ASN:                                        10.09
ARIN Region origin ASes announcing only one prefix:                5754
ARIN Region transit ASes present in the Internet Routing Table:    1599
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:      17
Number of ARIN addresses announced to Internet:              1070644608
    Equivalent to 63 /8s, 208 /16s and 189 /24s
    Percentage of available ARIN address space announced:          56.6

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,  45/8,  47/8,  48/8,  50/8,  52/8,
                        53/8,  54/8,  55/8,  56/8,  57/8,  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, 104/8, 107/8, 108/8, 128/8,
                       129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8,
                       137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8,
                       146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8,
                       157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8,
                       165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8,
                       173/8, 174/8, 184/8, 192/8, 198/8, 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:                    103875
    Total RIPE prefixes after maximum aggregation:                55073
    RIPE Deaggregation factor:                                     1.89
Prefixes being announced from the RIPE address blocks:           106098
    Unique aggregates announced from the RIPE address blocks:     67054
RIPE Region origin ASes present in the Internet Routing Table:    16647
    RIPE Prefixes per ASN:                                         6.37
RIPE Region origin ASes announcing only one prefix:                8073
RIPE Region transit ASes present in the Internet Routing Table:    2689
Average RIPE Region AS path length visible:                         5.0
    Max RIPE Region AS path length visible:                          27
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1694
Number of RIPE addresses announced to Internet:               635393668
    Equivalent to 37 /8s, 223 /16s and 86 /24s
    Percentage of available RIPE address space announced:          92.4

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, 56320-58367
                       59392-61439, 196608-199679
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,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   41993
    Total LACNIC prefixes after maximum aggregation:               8342
    LACNIC Deaggregation factor:                                   5.03
Prefixes being announced from the LACNIC address blocks:          44613
    Unique aggregates announced from the LACNIC address blocks:   21657
LACNIC Region origin ASes present in the Internet Routing Table:   1608
    LACNIC Prefixes per ASN:                                      27.74
LACNIC Region origin ASes announcing only one prefix:               429
LACNIC Region transit ASes present in the Internet Routing Table:   310
Average LACNIC Region AS path length visible:                       4.6
    Max LACNIC Region AS path length visible:                        25
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   612
Number of LACNIC addresses announced to Internet:             111736744
    Equivalent to 6 /8s, 168 /16s and 247 /24s
    Percentage of available LACNIC address space announced:        66.6

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   9191
    Total AfriNIC prefixes after maximum aggregation:              2121
    AfriNIC Deaggregation factor:                                  4.33
Prefixes being announced from the AfriNIC address blocks:          9609
    Unique aggregates announced from the AfriNIC address blocks:   3242
AfriNIC Region origin ASes present in the Internet Routing Table:   548
    AfriNIC Prefixes per ASN:                                     17.53
AfriNIC Region origin ASes announcing only one prefix:              171
AfriNIC Region transit ASes present in the Internet Routing Table:  124
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    5
Number of AfriNIC addresses announced to Internet:             40489728
    Equivalent to 2 /8s, 105 /16s and 211 /24s
    Percentage of available AfriNIC address space announced:       40.2

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 102/8, 105/8, 154/8, 196/8, 197/8,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     2689      11116        1201   Korea Telecom (KIX)
17974     2146        558          79   PT TELEKOMUNIKASI INDONESIA
 7545     1690        301          87   TPG Internet Pty Ltd
 4755     1612        388         162   TATA Communications formerly 
 9829     1300       1085          28   BSNL National Internet Backbo
 9583     1165         87         507   Sify Limited
 7552     1124       1062          11   Vietel Corporation
 4808     1100       2053         318   CNCGROUP IP network: China169
24560     1036        385         165   Bharti Airtel Ltd., Telemedia
 9498      978        291          65   BHARTI Airtel Ltd.

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     3392       3789         188   bellsouth.net, inc. 
 7029     3260        986         161   Windstream Communications Inc
18566     2089        382         182   Covad Communications 
 1785     1931        681         132   PaeTec Communications, Inc.
22773     1656       2911         121   Cox Communications, Inc.
20115     1651       1573         616   Charter Communications 
 4323     1575       1043         384   Time Warner Telecom
30036     1382        264         783   Mediacom Communications Corp 
 7018     1259      10029         824   AT&T WorldNet Services
11492     1190        216         356   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
 8402     1628        544          16   Corbina telecom
 2118     1288         97          14   EUnet/RELCOM Autonomous Syste
12479      781        731          91   Uni2 Autonomous System
34984      725        189         176   BILISIM TELEKOM
 6830      711       2292         445   UPC Distribution Services
31148      695         37           9   FreeNet ISP
20940      685        220         527   Akamai Technologies European 
 8551      579        364          61   Bezeq International
13188      504        100          10   Educational Network
 3320      496       8443         408   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
28573     1989       1214          55   NET Servicos de Comunicao S.A
10620     1983        345         204   TVCABLE BOGOTA 
 6503     1531        418          66   AVANTEL, S.A. 
 8151     1489       3065         342   UniNet S.A. de C.V. 
 7303     1453        933         193   Telecom Argentina Stet-France
27947      709         74          94   Telconet S.A
11172      643         91          74   Servicios Alestra S.A de C.V 
 3816      589        246          90   Empresa Nacional de Telecomun
22047      583        326          15   VTR PUNTO NET S.A. 
14117      567         65          59   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     1222        958          13   TEDATA
24863      864        274          32   LINKdotNET AS number
 6713      504        649          18   Itissalat Al-MAGHRIB
24835      286         80           8   RAYA Telecom - Egypt
 3741      262        905         223   The Internet Solution 
33776      199         12          21   Starcomms Nigeria Limited
12258      197         28          62   Vodacom Internet Company 
16637      167        664          87   MTN Network Solutions
29975      167        571          19   Vodacom
15706      159         32           6   Sudatel Internet Exchange Aut

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     3392       3789         188   bellsouth.net, inc. 
 7029     3260        986         161   Windstream Communications Inc
 4766     2689      11116        1201   Korea Telecom (KIX)
17974     2146        558          79   PT TELEKOMUNIKASI INDONESIA
18566     2089        382         182   Covad Communications 
28573     1989       1214          55   NET Servicos de Comunicao S.A
10620     1983        345         204   TVCABLE BOGOTA 
 1785     1931        681         132   PaeTec Communications, Inc.
 7545     1690        301          87   TPG Internet Pty Ltd
22773     1656       2911         121   Cox Communications, Inc.

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

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

  ASN   No of nets  Net Savings Description
 7029      3260        3099      Windstream Communications Inc
17974      2146        2067      PT TELEKOMUNIKASI INDONESIA
28573      1989        1934      NET Servicos de Comunicao S.A
18566      2089        1907      Covad Communications 
 1785      1931        1799      PaeTec Communications, Inc.
10620      1983        1779      TVCABLE BOGOTA 
 8402      1628        1612      Corbina telecom
 7545      1690        1603      TPG Internet Pty Ltd
22773      1656        1535      Cox Communications, Inc.
 4766      2689        1488      Korea Telecom (KIX)

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

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

Bad AS  Designation  Network              Transit AS  Description
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic
25639   UNALLOCATED  12.41.169.0/24        7018       AT&T WorldNet Servic
13317   UNALLOCATED  12.44.10.0/24         7018       AT&T WorldNet Servic
23502   UNALLOCATED  12.44.44.0/24         7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.103.0/24        7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.110.0/24         701       UUNET Technologies, 
16476   UNALLOCATED  12.46.27.0/24         7018       AT&T WorldNet Servic
14764   UNALLOCATED  12.108.237.0/24       7018       AT&T WorldNet Servic
33649   UNALLOCATED  12.111.112.0/24      19029       New Edge Networks 
29760   UNALLOCATED  12.145.34.0/23        7018       AT&T WorldNet Servic

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

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix             Origin AS  Description
128.0.0.0/21         12654     RIPE NCC RIS Project
128.0.24.0/24        12654     RIPE NCC RIS Project

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

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

Network            Origin AS  Description
14.192.0.0/22        45464     Room 201, TGU Bldg
14.192.4.0/22        45464     Room 201, TGU Bldg
14.192.8.0/22        45464     Room 201, TGU Bldg
14.192.12.0/22       45464     Room 201, TGU Bldg
14.192.16.0/22       45464     Room 201, TGU Bldg
14.192.20.0/22       45464     Room 201, TGU Bldg
14.192.24.0/22       45464     Room 201, TGU Bldg
14.192.28.0/22       45464     Room 201, TGU Bldg
27.112.114.0/24      23884     Proimage Engineering and Comm
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       /9:12      /10:28      /11:82      /12:236     
/13:469     /14:841     /15:1521    /16:12308   /17:6376    /18:10769   
/19:20908   /20:29682   /21:31424   /22:41182   /23:39084   /24:217243  
/25:1224    /26:1473    /27:857     /28:169     /29:65      /30:18      
/31:0       /32:23      

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

  ASN   No of nets  Total ann.   Description
 7029     2632          3260      Windstream Communications Inc
18566     2039          2089      Covad Communications 
 6389     1871          3392      bellsouth.net, inc. 
 8402     1323          1628      Corbina telecom
30036     1319          1382      Mediacom Communications Corp 
11492     1153          1190      Cable One 
22773     1087          1656      Cox Communications, Inc.
 6503     1058          1531      AVANTEL, S.A. 
 1785     1042          1931      PaeTec Communications, Inc.
 8452      998          1222      TEDATA

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

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

   1:574       2:735       3:1         4:13        5:131       6:3      
   8:433      12:2008     13:1        14:636      15:12       16:3      
  17:5        20:24       23:180      24:1776     27:1313     31:998    
  32:56       33:2        34:2        36:9        37:591      38:821    
  39:1        40:128      41:3062     42:142      44:3        46:1470   
  47:2        49:418      50:547      52:13       54:13       55:6      
  56:1        57:34       58:978      59:528      60:249      61:1297   
  62:967      63:2037     64:4257     65:2255     66:4486     67:2051   
  68:1154     69:3191     70:980      71:510      72:1837     74:2594   
  75:475      76:332      77:931      78:887      79:487      80:1213   
  81:947      82:660      83:529      84:494      85:1171     86:432    
  87:934      88:341      89:1749     90:301      91:5010     92:580    
  93:1360     94:1596     95:1220     96:379      97:318      98:889    
  99:39      100:19      101:253     103:1235    106:101     107:188    
 108:363     109:1428    110:785     111:940     112:420     113:634    
 114:653     115:904     116:930     117:729     118:926     119:1228   
 120:352     121:809     122:1674    123:1084    124:1397    125:1267   
 128:554     129:188     130:263     131:615     132:300     133:22     
 134:244     135:61      136:217     137:240     138:337     139:175    
 140:494     141:266     142:429     143:370     144:529     145:77     
 146:518     147:288     148:769     149:318     150:157     151:182    
 152:474     153:176     154:17      155:433     156:220     157:382    
 158:191     159:621     160:342     161:268     162:376     163:192    
 164:658     165:415     166:584     167:479     168:908     169:126    
 170:893     171:145     172:5       173:1730    174:617     175:438    
 176:564     177:924     178:1533    180:1290    181:99      182:1025   
 183:239     184:533     185:1       186:1918    187:1079    188:1355   
 189:1590    190:5739    192:6010    193:5521    194:4532    195:3430   
 196:1189    197:170     198:3673    199:4848    200:5911    201:1977   
 202:8701    203:8638    204:4325    205:2532    206:2800    207:2801   
 208:4028    209:3618    210:2780    211:1549    212:2003    213:1908   
 214:880     215:82      216:5071    217:1554    218:552     219:338    
 220:1237    221:568     222:337     223:357    

End of report



More information about the NANOG mailing list