Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jan 13 13:29:10 CST 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 14 Jan, 2012

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

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

BGP routing table entries examined:                              390792
    Prefixes after maximum aggregation:                          168714
    Deaggregation factor:                                          2.32
    Unique aggregates announced to Internet:                     190828
Total ASes present in the Internet Routing Table:                 39823
    Prefixes per ASN:                                              9.81
Origin-only ASes present in the Internet Routing Table:           32590
Origin ASes announcing only one prefix:                           15510
Transit ASes present in the Internet Routing Table:                5382
Transit-only ASes present in the Internet Routing Table:            143
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      33
    Max AS path prepend of ASN (48687)                               24
Prefixes from unregistered ASNs in the Routing Table:              2098
    Unregistered ASNs in the Routing Table:                        1058
Number of 32-bit ASNs allocated by the RIRs:                       2178
Number of 32-bit ASNs visible in the Routing Table:                1851
Prefixes from 32-bit ASNs in the Routing Table:                    4455
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            120
Number of addresses announced to Internet:                   2509165880
    Equivalent to 149 /8s, 142 /16s and 213 /24s
    Percentage of available address space announced:               67.7
    Percentage of allocated address space announced:               67.7
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               91.9
Total number of prefixes smaller than registry allocations:      165725

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

Prefixes being announced by APNIC Region ASes:                    96436
    Total APNIC prefixes after maximum aggregation:               31482
    APNIC Deaggregation factor:                                    3.06
Prefixes being announced from the APNIC address blocks:           92792
    Unique aggregates announced from the APNIC address blocks:    38873
APNIC Region origin ASes present in the Internet Routing Table:    4636
    APNIC Prefixes per ASN:                                       20.02
APNIC Region origin ASes announcing only one prefix:               1249
APNIC Region transit ASes present in the Internet Routing Table:    731
Average APNIC Region AS path length visible:                        4.3
    Max APNIC Region AS path length visible:                         18
Number of APNIC region 32-bit ASNs visible in the Routing Table:    133
Number of APNIC addresses announced to Internet:              634071944
    Equivalent to 37 /8s, 203 /16s and 43 /24s
    Percentage of available APNIC address space announced:         80.4

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-132095, 132096-133119
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, 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:                    147469
    Total ARIN prefixes after maximum aggregation:                75118
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           119452
    Unique aggregates announced from the ARIN address blocks:     49103
ARIN Region origin ASes present in the Internet Routing Table:    14847
    ARIN Prefixes per ASN:                                         8.05
ARIN Region origin ASes announcing only one prefix:                5677
ARIN Region transit ASes present in the Internet Routing Table:    1584
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          25
Number of ARIN region 32-bit ASNs visible in the Routing Table:      14
Number of ARIN addresses announced to Internet:               804708544
    Equivalent to 47 /8s, 246 /16s and 224 /24s
    Percentage of available ARIN address space announced:          64.0

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, 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:                     96603
    Total RIPE prefixes after maximum aggregation:                51929
    RIPE Deaggregation factor:                                     1.86
Prefixes being announced from the RIPE address blocks:            88466
    Unique aggregates announced from the RIPE address blocks:     55570
RIPE Region origin ASes present in the Internet Routing Table:    16238
    RIPE Prefixes per ASN:                                         5.45
RIPE Region origin ASes announcing only one prefix:                7979
RIPE Region transit ASes present in the Internet Routing Table:    2582
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1284
Number of RIPE addresses announced to Internet:               497328072
    Equivalent to 29 /8s, 164 /16s and 159 /24s
    Percentage of available RIPE address space announced:          80.1

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
                       196608-198655
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, 185/8, 193/8, 194/8, 195/8, 212/8,
                       213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   37209
    Total LACNIC prefixes after maximum aggregation:               8038
    LACNIC Deaggregation factor:                                   4.63
Prefixes being announced from the LACNIC address blocks:          36808
    Unique aggregates announced from the LACNIC address blocks:   19247
LACNIC Region origin ASes present in the Internet Routing Table:   1560
    LACNIC Prefixes per ASN:                                      23.59
LACNIC Region origin ASes announcing only one prefix:               446
LACNIC Region transit ASes present in the Internet Routing Table:   287
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        28
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   416
Number of LACNIC addresses announced to Internet:              95387016
    Equivalent to 5 /8s, 175 /16s and 125 /24s
    Percentage of available LACNIC address space announced:        63.2

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,
                       200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   8459
    Total AfriNIC prefixes after maximum aggregation:              2074
    AfriNIC Deaggregation factor:                                  4.08
Prefixes being announced from the AfriNIC address blocks:          6501
    Unique aggregates announced from the AfriNIC address blocks:   2075
AfriNIC Region origin ASes present in the Internet Routing Table:   506
    AfriNIC Prefixes per ASN:                                     12.85
AfriNIC Region origin ASes announcing only one prefix:              159
AfriNIC Region transit ASes present in the Internet Routing Table:  115
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    4
Number of AfriNIC addresses announced to Internet:             30834432
    Equivalent to 1 /8s, 214 /16s and 127 /24s
    Percentage of available AfriNIC address space announced:       45.9

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     2473      11100         971   Korea Telecom (KIX)
17974     1715        503          36   PT TELEKOMUNIKASI INDONESIA
 7545     1609        303          83   TPG Internet Pty Ltd
 4755     1516        385         156   TATA Communications formerly 
 7552     1425       1064           7   Vietel Corporation
 9829     1163        989          28   BSNL National Internet Backbo
 9583     1118         81         495   Sify Limited
 4808     1103       2053         314   CNCGROUP IP network: China169
24560     1010        384         167   Bharti Airtel Ltd., Telemedia
18101      976        130         155   Reliance Infocom Ltd Internet

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     3455       3807         207   bellsouth.net, inc. 
 7029     3222       1017         200   Windstream Communications Inc
18566     2093        382         177   Covad Communications 
 1785     1865        680         123   PaeTec Communications, Inc.
20115     1618       1552         619   Charter Communications 
 4323     1604       1062         382   Time Warner Telecom
22773     1517       2909         108   Cox Communications, Inc.
30036     1489        264         696   Mediacom Communications Corp 
19262     1388       4683         401   Verizon Global Networks 
 7018     1299       7012         850   AT&T WorldNet Services

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     1665        480          15   Corbina telecom
15557     1096       2161          64   LDCOM NETWORKS
 2118      927         99          14   EUnet/RELCOM Autonomous Syste
31148      657         35           9   FreeNet ISP
 6830      644       1928         413   UPC Distribution Services
34984      639        188         174   BILISIM TELEKOM
20940      562        182         448   Akamai Technologies European 
12479      551        636          53   Uni2 Autonomous System
 8551      521        360          81   Bezeq International
 3320      517       8157         393   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     1738        321         159   TVCABLE BOGOTA 
28573     1579       1066          77   NET Servicos de Comunicao S.A
 8151     1462       2997         343   UniNet S.A. de C.V. 
 7303     1256        756         179   Telecom Argentina Stet-France
27947      634         73          95   Telconet S.A
22047      582        322          17   VTR PUNTO NET S.A. 
 7738      551       1050          31   Telecomunicacoes da Bahia S.A
 3816      550        238          92   Empresa Nacional de Telecomun
 6503      541        434          68   AVANTEL, S.A. 
11172      535        102         101   Servicios Alestra S.A de C.V 

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     1013        958          13   TEDATA
24863      795        146          36   LINKdotNET AS number
 3741      280        939         229   The Internet Solution 
 6713      250        649          18   Itissalat Al-MAGHRIB
33776      240         13           8   Starcomms Nigeria Limited
15706      239         32           6   Sudatel Internet Exchange Aut
29571      218         17          12   Ci Telecom Autonomous system 
12258      195         28          60   Vodacom Internet Company 
24835      188         80           8   RAYA Telecom - Egypt
16637      160        664          82   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     3455       3807         207   bellsouth.net, inc. 
 7029     3222       1017         200   Windstream Communications Inc
 4766     2473      11100         971   Korea Telecom (KIX)
18566     2093        382         177   Covad Communications 
 1785     1865        680         123   PaeTec Communications, Inc.
10620     1738        321         159   TVCABLE BOGOTA 
17974     1715        503          36   PT TELEKOMUNIKASI INDONESIA
 8402     1665        480          15   Corbina telecom
20115     1618       1552         619   Charter Communications 
 7545     1609        303          83   TPG Internet Pty Ltd

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      3222        3022      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1865        1742      PaeTec Communications, Inc.
17974      1715        1679      PT TELEKOMUNIKASI INDONESIA
 8402      1665        1650      Corbina telecom
10620      1738        1579      TVCABLE BOGOTA 
 7545      1609        1526      TPG Internet Pty Ltd
 4766      2473        1502      Korea Telecom (KIX)
28573      1579        1502      NET Servicos de Comunicao S.A
 7552      1425        1418      Vietel Corporation

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
32567   UNALLOCATED  12.14.170.0/24        4323       Time Warner Telecom
32567   UNALLOCATED  12.25.107.0/24        4323       Time Warner Telecom
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
32873   UNALLOCATED  12.46.100.0/23       10912       InterNAP Network Ser

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
37.46.80.0/21        23456     32-bit ASN transition
41.222.79.0/24       37345     MEDALLION Communications

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      /10:27      /11:81      /12:234     
/13:463     /14:817     /15:1459    /16:12118   /17:6147    /18:10195   
/19:20203   /20:27995   /21:28534   /22:38863   /23:36419   /24:203565  
/25:1181    /26:1420    /27:782     /28:171     /29:56      /30:13      
/31:0       /32:18      

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

  ASN   No of nets  Total ann.   Description
 7029     2842          3222      Windstream Communications Inc
 6389     2116          3455      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
 8402     1644          1665      Corbina telecom
10620     1633          1738      TVCABLE BOGOTA 
30036     1448          1489      Mediacom Communications Corp 
11492     1115          1152      Cable One 
 1785     1066          1865      PaeTec Communications, Inc.
15557     1046          1096      LDCOM NETWORKS
 7011     1042          1159      Citizens Utilities 

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

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

   1:494       2:464       4:15        5:1         6:3         8:368    
  12:1950     13:1        14:586      15:11       16:3        17:6      
  20:9        23:98       24:1710     27:1170     31:812      32:67     
  33:2        34:2        36:8        37:87       38:794      40:114    
  41:2895     42:85       43:1        44:3        46:1216     47:3      
  49:317      50:506      52:13       55:7        56:2        57:41     
  58:946      59:491      60:344      61:1182     62:950      63:1966   
  64:4119     65:2298     66:4375     67:2005     68:1155     69:3149   
  70:918      71:427      72:1805     74:2649     75:446      76:320    
  77:948      78:899      79:497      80:1187     81:863      82:550    
  83:530      84:586      85:1155     86:748      87:908      88:338    
  89:1598     90:267      91:4418     92:534      93:1543     94:1351   
  95:1062     96:394      97:296      98:798      99:38      100:18     
 101:127     103:637     106:10      107:133     108:125     109:1422   
 110:684     111:839     112:427     113:519     114:610     115:756    
 116:868     117:726     118:907     119:1235    120:357     121:679    
 122:1624    123:1050    124:1336    125:1352    128:535     129:192    
 130:201     131:588     132:162     133:21      134:226     135:58     
 136:213     137:151     138:288     139:144     140:490     141:261    
 142:379     143:393     144:504     145:68      146:484     147:223    
 148:635     149:279     150:166     151:193     152:447     153:170    
 154:7       155:393     156:210     157:366     158:155     159:511    
 160:320     161:222     162:337     163:188     164:529     165:391    
 166:562     167:456     168:853     169:147     170:830     171:103    
 172:4       173:1778    174:589     175:418     176:348     177:454    
 178:1183    180:1219    181:43      182:687     183:264     184:430    
 185:1       186:1490    187:831     188:1034    189:1156    190:5321   
 192:5991    193:5462    194:3943    195:3313    196:1281    197:167    
 198:3627    199:4295    200:5583    201:1703    202:8417    203:8588   
 204:4353    205:2430    206:2734    207:2806    208:4020    209:3551   
 210:2742    211:1480    212:1968    213:1818    214:838     215:94     
 216:4938    217:1472    218:560     219:337     220:1247    221:557    
 222:324     223:267    

End of report



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