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Weekly Routing Table Report
From: Routing Analysis Role Account <cscora () apnic net>
Date: Sat, 4 Feb 2012 04:59:49 +1000 (EST)

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 () lists apnic net

For historical data, please see http://thyme.rand.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz () gmail com>.

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

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

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

BGP routing table entries examined:                              395820
    Prefixes after maximum aggregation:                          169388
    Deaggregation factor:                                          2.34
    Unique aggregates announced to Internet:                     191947
Total ASes present in the Internet Routing Table:                 40003
    Prefixes per ASN:                                              9.89
Origin-only ASes present in the Internet Routing Table:           32689
Origin ASes announcing only one prefix:                           15521
Transit ASes present in the Internet Routing Table:                5393
Transit-only ASes present in the Internet Routing Table:            142
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:               315
    Unregistered ASNs in the Routing Table:                         120
Number of 32-bit ASNs allocated by the RIRs:                       2257
Number of 32-bit ASNs visible in the Routing Table:                1921
Prefixes from 32-bit ASNs in the Routing Table:                    4672
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            120
Number of addresses announced to Internet:                   2512081104
    Equivalent to 149 /8s, 187 /16s and 80 /24s
    Percentage of available address space announced:               67.8
    Percentage of allocated address space announced:               67.8
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               92.0
Total number of prefixes smaller than registry allocations:      167934

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

Prefixes being announced by APNIC Region ASes:                    97613
    Total APNIC prefixes after maximum aggregation:               31507
    APNIC Deaggregation factor:                                    3.10
Prefixes being announced from the APNIC address blocks:           93918
    Unique aggregates announced from the APNIC address blocks:    39044
APNIC Region origin ASes present in the Internet Routing Table:    4648
    APNIC Prefixes per ASN:                                       20.21
APNIC Region origin ASes announcing only one prefix:               1238
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:    140
Number of APNIC addresses announced to Internet:              635833440
    Equivalent to 37 /8s, 230 /16s and 12 /24s
    Percentage of available APNIC address space announced:         80.6

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:                    148115
    Total ARIN prefixes after maximum aggregation:                75385
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           120087
    Unique aggregates announced from the ARIN address blocks:     49290
ARIN Region origin ASes present in the Internet Routing Table:    14884
    ARIN Prefixes per ASN:                                         8.07
ARIN Region origin ASes announcing only one prefix:                5683
ARIN Region transit ASes present in the Internet Routing Table:    1577
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          22
Number of ARIN region 32-bit ASNs visible in the Routing Table:      15
Number of ARIN addresses announced to Internet:               804133824
    Equivalent to 47 /8s, 238 /16s and 27 /24s
    Percentage of available ARIN address space announced:          63.9

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:                     98052
    Total RIPE prefixes after maximum aggregation:                52278
    RIPE Deaggregation factor:                                     1.88
Prefixes being announced from the RIPE address blocks:            89929
    Unique aggregates announced from the RIPE address blocks:     55955
RIPE Region origin ASes present in the Internet Routing Table:    16285
    RIPE Prefixes per ASN:                                         5.52
RIPE Region origin ASes announcing only one prefix:                7995
RIPE Region transit ASes present in the Internet Routing Table:    2598
Average RIPE Region AS path length visible:                         4.7
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1322
Number of RIPE addresses announced to Internet:               498585736
    Equivalent to 29 /8s, 183 /16s and 208 /24s
    Percentage of available RIPE address space announced:          80.3

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, 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:                   38255
    Total LACNIC prefixes after maximum aggregation:               8059
    LACNIC Deaggregation factor:                                   4.75
Prefixes being announced from the LACNIC address blocks:          37876
    Unique aggregates announced from the LACNIC address blocks:   19445
LACNIC Region origin ASes present in the Internet Routing Table:   1569
    LACNIC Prefixes per ASN:                                      24.14
LACNIC Region origin ASes announcing only one prefix:               442
LACNIC Region transit ASes present in the Internet Routing Table:   294
Average LACNIC Region AS path length visible:                       4.3
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   440
Number of LACNIC addresses announced to Internet:              95986568
    Equivalent to 5 /8s, 184 /16s and 163 /24s
    Percentage of available LACNIC address space announced:        63.6

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,
                       200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   8951
    Total AfriNIC prefixes after maximum aggregation:              2087
    AfriNIC Deaggregation factor:                                  4.29
Prefixes being announced from the AfriNIC address blocks:          6957
    Unique aggregates announced from the AfriNIC address blocks:   2150
AfriNIC Region origin ASes present in the Internet Routing Table:   512
    AfriNIC Prefixes per ASN:                                     13.59
AfriNIC Region origin ASes announcing only one prefix:              163
AfriNIC Region transit ASes present in the Internet Routing Table:  115
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:    4
Number of AfriNIC addresses announced to Internet:             30867968
    Equivalent to 1 /8s, 215 /16s and 2 /24s
    Percentage of available AfriNIC address space announced:       46.0

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     2474      11102         982   Korea Telecom (KIX)
17974     1723        503          36   PT TELEKOMUNIKASI INDONESIA
 7545     1642        303          85   TPG Internet Pty Ltd
 4755     1529        385         155   TATA Communications formerly 
 7552     1408       1064           7   Vietel Corporation
 9829     1167        989          28   BSNL National Internet Backbo
 9583     1123         82         483   Sify Limited
 4808     1102       2051         313   CNCGROUP IP network: China169
24560     1014        385         167   Bharti Airtel Ltd., Telemedia
17488      934        161         224   Hathway IP Over Cable Interne

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     3445       3807         201   bellsouth.net, inc. 
 7029     3211       1017         199   Windstream Communications Inc
18566     2093        382         177   Covad Communications 
 1785     1865        680         125   PaeTec Communications, Inc.
20115     1627       1552         627   Charter Communications 
 4323     1609       1062         384   Time Warner Telecom
22773     1498       2910         109   Cox Communications, Inc.
30036     1437        253         743   Mediacom Communications Corp 
19262     1386       4683         400   Verizon Global Networks 
 7018     1305       7007         851   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     1712        480          15   Corbina telecom
 2118     1391         99          14   EUnet/RELCOM Autonomous Syste
15557     1096       2161          64   LDCOM NETWORKS
34984      643        188         172   BILISIM TELEKOM
 6830      642       1927         412   UPC Distribution Services
20940      602        195         467   Akamai Technologies European 
12479      561        642          54   Uni2 Autonomous System
31148      532         37           9   FreeNet ISP
 3320      531       8162         397   Deutsche Telekom AG
 8551      530        360          81   Bezeq International

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     1735        323         170   TVCABLE BOGOTA 
28573     1618       1083          72   NET Servicos de Comunicao S.A
 8151     1336       2995         344   UniNet S.A. de C.V. 
 7303     1260        757         180   Telecom Argentina Stet-France
26615      887        640          33   Tim Brasil S.A.
11172      697         95          75   Servicios Alestra S.A de C.V 
27947      650         73          99   Telconet S.A
22047      581        322          17   VTR PUNTO NET S.A. 
 3816      550        237          91   Empresa Nacional de Telecomun
 7738      550       1050          31   Telecomunicacoes da Bahia 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     1131        958          13   TEDATA
24863      834        155          43   LINKdotNET AS number
 6713      485        649          18   Itissalat Al-MAGHRIB
 3741      280        939         229   The Internet Solution 
15706      238         32           6   Sudatel Internet Exchange Aut
33776      237         13          13   Starcomms Nigeria Limited
29571      214         17          12   Ci Telecom Autonomous system 
12258      197         28          62   Vodacom Internet Company 
24835      193         80           8   RAYA Telecom - Egypt
16637      163        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     3445       3807         201   bellsouth.net, inc. 
 7029     3211       1017         199   Windstream Communications Inc
 4766     2474      11102         982   Korea Telecom (KIX)
18566     2093        382         177   Covad Communications 
 1785     1865        680         125   PaeTec Communications, Inc.
10620     1735        323         170   TVCABLE BOGOTA 
17974     1723        503          36   PT TELEKOMUNIKASI INDONESIA
 8402     1712        480          15   Corbina telecom
 7545     1642        303          85   TPG Internet Pty Ltd
20115     1627       1552         627   Charter Communications 

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      3211        3012      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1865        1740      PaeTec Communications, Inc.
 8402      1712        1697      Corbina telecom
17974      1723        1687      PT TELEKOMUNIKASI INDONESIA
10620      1735        1565      TVCABLE BOGOTA 
 7545      1642        1557      TPG Internet Pty Ltd
28573      1618        1546      NET Servicos de Comunicao S.A
 4766      2474        1492      Korea Telecom (KIX)
 7552      1408        1401      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
37.77.128.0/21        8492     Siris
37.77.152.0/21       44176     RIPE Network Coordination Cen

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      /11:80      /12:231     
/13:458     /14:817     /15:1466    /16:12151   /17:6170    /18:10294   
/19:20359   /20:28181   /21:29140   /22:39550   /23:36869   /24:206457  
/25:1189    /26:1430    /27:786     /28:43      /29:59      /30:14      
/31:0       /32:18      

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

  ASN   No of nets  Total ann.   Description
 7029     2841          3211      Windstream Communications Inc
 6389     2115          3445      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
 8402     1691          1712      Corbina telecom
10620     1629          1735      TVCABLE BOGOTA 
30036     1396          1437      Mediacom Communications Corp 
11492     1117          1154      Cable One 
 1785     1063          1865      PaeTec Communications, Inc.
15557     1046          1096      LDCOM NETWORKS
 7011     1033          1149      Citizens Utilities 

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

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

   1:499       2:475       4:14        5:1         6:3         8:378    
  12:1954     13:1        14:595      15:11       16:3        17:6      
  20:9        23:125      24:1725     27:1187     31:852      32:65     
  33:2        34:2        36:9        37:161      38:791      40:114    
  41:3108     42:92       43:1        44:3        46:1279     47:3      
  49:322      50:514      52:13       54:2        55:8        56:3      
  57:38       58:958      59:491      60:344      61:1186     62:927    
  63:2000     64:4147     65:2287     66:4421     67:2048     68:1167   
  69:3149     70:916      71:410      72:1794     74:2646     75:452    
  76:323      77:963      78:913      79:498      80:1221     81:877    
  82:562      83:538      84:582      85:1163     86:746      87:910    
  88:341      89:1539     90:253      91:4473     92:540      93:1555   
  94:1338     95:1134     96:417      97:310      98:811      99:38     
 100:20      101:138     103:737     106:4       107:143     108:142    
 109:1467    110:687     111:837     112:429     113:525     114:596    
 115:757     116:860     117:722     118:906     119:1249    120:356    
 121:682     122:1627    123:1064    124:1338    125:1360    128:538    
 129:189     130:213     131:590     132:164     133:21      134:231    
 135:59      136:214     137:152     138:285     139:140     140:489    
 141:261     142:378     143:400     144:509     145:70      146:484    
 147:227     148:724     149:274     150:168     151:194     152:446    
 153:170     154:7       155:398     156:211     157:367     158:156    
 159:513     160:329     161:243     162:341     163:188     164:532    
 165:397     166:556     167:455     168:765     169:147     170:833    
 171:110     172:4       173:1757    174:591     175:414     176:468    
 177:470     178:1246    180:1176    181:64      182:703     183:274    
 184:430     185:1       186:2028    187:853     188:1030    189:1168   
 190:5444    192:5979    193:5525    194:4330    195:3390    196:1299   
 197:180     198:3615    199:4359    200:5710    201:1728    202:8404   
 203:8598    204:4343    205:2443    206:2747    207:2817    208:4064   
 209:3558    210:2724    211:1475    212:1976    213:1841    214:855    
 215:93      216:4984    217:1472    218:553     219:341     220:1243   
 221:555     222:321     223:274    

End of report


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