Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jan 27 18:59:47 UTC 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 28 Jan, 2012

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

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

BGP routing table entries examined:                              394446
    Prefixes after maximum aggregation:                          169250
    Deaggregation factor:                                          2.33
    Unique aggregates announced to Internet:                     191523
Total ASes present in the Internet Routing Table:                 39956
    Prefixes per ASN:                                              9.87
Origin-only ASes present in the Internet Routing Table:           32670
Origin ASes announcing only one prefix:                           15524
Transit ASes present in the Internet Routing Table:                5393
Transit-only ASes present in the Internet Routing Table:            138
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      34
    Max AS path prepend of ASN (38964)                               31
Prefixes from unregistered ASNs in the Routing Table:               320
    Unregistered ASNs in the Routing Table:                         120
Number of 32-bit ASNs allocated by the RIRs:                       2225
Number of 32-bit ASNs visible in the Routing Table:                1893
Prefixes from 32-bit ASNs in the Routing Table:                    4552
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            124
Number of addresses announced to Internet:                   2512489808
    Equivalent to 149 /8s, 193 /16s and 141 /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:      166987

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

Prefixes being announced by APNIC Region ASes:                    97720
    Total APNIC prefixes after maximum aggregation:               31635
    APNIC Deaggregation factor:                                    3.09
Prefixes being announced from the APNIC address blocks:           94001
    Unique aggregates announced from the APNIC address blocks:    39037
APNIC Region origin ASes present in the Internet Routing Table:    4647
    APNIC Prefixes per ASN:                                       20.23
APNIC Region origin ASes announcing only one prefix:               1245
APNIC Region transit ASes present in the Internet Routing Table:    732
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:    138
Number of APNIC addresses announced to Internet:              635145056
    Equivalent to 37 /8s, 219 /16s and 139 /24s
    Percentage of available APNIC address space announced:         80.5

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:                    147868
    Total ARIN prefixes after maximum aggregation:                75244
    ARIN Deaggregation factor:                                     1.97
Prefixes being announced from the ARIN address blocks:           119897
    Unique aggregates announced from the ARIN address blocks:     49172
ARIN Region origin ASes present in the Internet Routing Table:    14873
    ARIN Prefixes per ASN:                                         8.06
ARIN Region origin ASes announcing only one prefix:                5685
ARIN Region transit ASes present in the Internet Routing Table:    1582
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:               805162560
    Equivalent to 47 /8s, 253 /16s and 206 /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:                     97463
    Total RIPE prefixes after maximum aggregation:                52172
    RIPE Deaggregation factor:                                     1.87
Prefixes being announced from the RIPE address blocks:            89393
    Unique aggregates announced from the RIPE address blocks:     55863
RIPE Region origin ASes present in the Internet Routing Table:    16289
    RIPE Prefixes per ASN:                                         5.49
RIPE Region origin ASes announcing only one prefix:                7995
RIPE Region transit ASes present in the Internet Routing Table:    2592
Average RIPE Region AS path length visible:                         4.7
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1312
Number of RIPE addresses announced to Internet:               498545288
    Equivalent to 29 /8s, 183 /16s and 50 /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:                   37647
    Total LACNIC prefixes after maximum aggregation:               8038
    LACNIC Deaggregation factor:                                   4.68
Prefixes being announced from the LACNIC address blocks:          37201
    Unique aggregates announced from the LACNIC address blocks:   19337
LACNIC Region origin ASes present in the Internet Routing Table:   1567
    LACNIC Prefixes per ASN:                                      23.74
LACNIC Region origin ASes announcing only one prefix:               440
LACNIC Region transit ASes present in the Internet Routing Table:   289
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   425
Number of LACNIC addresses announced to Internet:              95771016
    Equivalent to 5 /8s, 181 /16s and 89 /24s
    Percentage of available LACNIC address space announced:        63.4

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:                   9026
    Total AfriNIC prefixes after maximum aggregation:              2089
    AfriNIC Deaggregation factor:                                  4.32
Prefixes being announced from the AfriNIC address blocks:          7047
    Unique aggregates announced from the AfriNIC address blocks:   2156
AfriNIC Region origin ASes present in the Internet Routing Table:   507
    AfriNIC Prefixes per ASN:                                     13.90
AfriNIC Region origin ASes announcing only one prefix:              159
AfriNIC Region transit ASes present in the Internet Routing Table:  118
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:             30775040
    Equivalent to 1 /8s, 213 /16s and 151 /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     2472      11101         979   Korea Telecom (KIX)
17974     1714        503          35   PT TELEKOMUNIKASI INDONESIA
 7545     1642        303          86   TPG Internet Pty Ltd
 4755     1527        385         155   TATA Communications formerly 
 7552     1424       1064           7   Vietel Corporation
 9829     1167        989          28   BSNL National Internet Backbo
 4808     1099       2051         312   CNCGROUP IP network: China169
 9583     1068         78         505   Sify Limited
24560     1015        385         167   Bharti Airtel Ltd., Telemedia
18101      945        130         154   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     3446       3807         201   bellsouth.net, inc. 
 7029     3227       1017         200   Windstream Communications Inc
18566     2093        382         177   Covad Communications 
 1785     1864        679         123   PaeTec Communications, Inc.
20115     1624       1552         628   Charter Communications 
 4323     1608       1062         384   Time Warner Telecom
22773     1520       2910         109   Cox Communications, Inc.
30036     1453        255         729   Mediacom Communications Corp 
19262     1386       4683         400   Verizon Global Networks 
 7018     1301       7008         848   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     1744        480          15   Corbina telecom
 2118     1241         99          14   EUnet/RELCOM Autonomous Syste
15557     1095       2161          64   LDCOM NETWORKS
 6830      642       1927         412   UPC Distribution Services
34984      641        188         172   BILISIM TELEKOM
20940      589        193         463   Akamai Technologies European 
12479      549        636          53   Uni2 Autonomous System
 3320      531       8162         397   Deutsche Telekom AG
 8551      529        360          81   Bezeq International
31148      524         36           8   FreeNet ISP

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     1729        322         168   TVCABLE BOGOTA 
28573     1637       1069          71   NET Servicos de Comunicao S.A
 8151     1460       2999         344   UniNet S.A. de C.V. 
 7303     1256        756         179   Telecom Argentina Stet-France
11172      687         95          72   Servicios Alestra S.A de C.V 
27947      650         73          99   Telconet S.A
22047      582        322          17   VTR PUNTO NET S.A. 
 3816      551        238          92   Empresa Nacional de Telecomun
 7738      550       1050          31   Telecomunicacoes da Bahia S.A
 6503      539        434          68   AVANTEL, 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     1207        958          13   TEDATA
24863      833        156          44   LINKdotNET AS number
 6713      487        649          18   Itissalat Al-MAGHRIB
 3741      280        939         229   The Internet Solution 
15706      242         32           6   Sudatel Internet Exchange Aut
33776      232         12          18   Starcomms Nigeria Limited
29571      214         17          12   Ci Telecom Autonomous system 
12258      196         28          61   Vodacom Internet Company 
24835      190         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     3446       3807         201   bellsouth.net, inc. 
 7029     3227       1017         200   Windstream Communications Inc
 4766     2472      11101         979   Korea Telecom (KIX)
18566     2093        382         177   Covad Communications 
 1785     1864        679         123   PaeTec Communications, Inc.
 8402     1744        480          15   Corbina telecom
10620     1729        322         168   TVCABLE BOGOTA 
17974     1714        503          35   PT TELEKOMUNIKASI INDONESIA
 7545     1642        303          86   TPG Internet Pty Ltd
28573     1637       1069          71   NET Servicos de Comunicao S.A

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      3227        3027      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1864        1741      PaeTec Communications, Inc.
 8402      1744        1729      Corbina telecom
17974      1714        1679      PT TELEKOMUNIKASI INDONESIA
28573      1637        1566      NET Servicos de Comunicao S.A
10620      1729        1561      TVCABLE BOGOTA 
 7545      1642        1556      TPG Internet Pty Ltd
 4766      2472        1493      Korea Telecom (KIX)
 7552      1424        1417      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
37.72.0.0/19         29119     ServiHosting Autonomous Syste
37.72.48.0/20        23456     32-bit ASN transition

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      /12:232     
/13:455     /14:817     /15:1463    /16:12154   /17:6161    /18:10269   
/19:20310   /20:28154   /21:29112   /22:39487   /23:36820   /24:205227  
/25:1181    /26:1421    /27:785     /28:168     /29:60      /30:14      
/31:0       /32:18      

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

  ASN   No of nets  Total ann.   Description
 7029     2847          3227      Windstream Communications Inc
 6389     2116          3446      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
 8402     1723          1744      Corbina telecom
10620     1624          1729      TVCABLE BOGOTA 
30036     1412          1453      Mediacom Communications Corp 
11492     1089          1125      Cable One 
 1785     1064          1864      PaeTec Communications, Inc.
15557     1046          1095      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)
----------------------------------------------

   1:510       2:478       4:14        5:1         6:3         8:378    
  12:1957     13:1        14:591      15:11       16:3        17:6      
  20:9        23:121      24:1716     27:1186     31:827      32:65     
  33:2        34:2        36:8        37:106      38:794      40:114    
  41:3175     42:87       43:1        44:3        46:1262     47:3      
  49:320      50:515      52:13       54:1        55:7        56:3      
  57:38       58:954      59:491      60:345      61:1178     62:922    
  63:1977     64:4130     65:2285     66:4409     67:2034     68:1168   
  69:3148     70:915      71:431      72:1799     74:2647     75:446    
  76:321      77:967      78:921      79:512      80:1208     81:872    
  82:561      83:532      84:583      85:1152     86:748      87:912    
  88:342      89:1544     90:258      91:4473     92:536      93:1554   
  94:1319     95:1125     96:414      97:306      98:793      99:38     
 100:20      101:130     103:688     106:4       107:137     108:129    
 109:1459    110:690     111:835     112:428     113:527     114:598    
 115:756     116:868     117:723     118:901     119:1254    120:354    
 121:681     122:1625    123:1058    124:1323    125:1359    128:538    
 129:190     130:211     131:591     132:162     133:21      134:233    
 135:59      136:213     137:153     138:290     139:145     140:488    
 141:260     142:378     143:400     144:508     145:68      146:487    
 147:226     148:695     149:271     150:166     151:192     152:446    
 153:170     154:7       155:398     156:210     157:367     158:154    
 159:509     160:333     161:237     162:339     163:188     164:532    
 165:391     166:561     167:458     168:765     169:147     170:833    
 171:112     172:4       173:1779    174:570     175:414     176:392    
 177:458     178:1234    180:1224    181:43      182:700     183:276    
 184:443     185:1       186:1506    187:829     188:974     189:1175   
 190:5395    192:5974    193:5483    194:4209    195:3392    196:1290   
 197:171     198:3588    199:4341    200:5704    201:1721    202:8424   
 203:8599    204:4348    205:2437    206:2749    207:2818    208:4046   
 209:3557    210:2733    211:1477    212:1978    213:1828    214:852    
 215:98      216:4975    217:1474    218:557     219:342     220:1252   
 221:549     222:321     223:273    

End of report




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