Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jan 20 13:29:44 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 21 Jan, 2012

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

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

BGP routing table entries examined:                              393115
    Prefixes after maximum aggregation:                          169030
    Deaggregation factor:                                          2.33
    Unique aggregates announced to Internet:                     191068
Total ASes present in the Internet Routing Table:                 39874
    Prefixes per ASN:                                              9.86
Origin-only ASes present in the Internet Routing Table:           32616
Origin ASes announcing only one prefix:                           15498
Transit ASes present in the Internet Routing Table:                5384
Transit-only ASes present in the Internet Routing Table:            140
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:              2141
    Unregistered ASNs in the Routing Table:                        1089
Number of 32-bit ASNs allocated by the RIRs:                       2200
Number of 32-bit ASNs visible in the Routing Table:                1874
Prefixes from 32-bit ASNs in the Routing Table:                    4540
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            118
Number of addresses announced to Internet:                   2511238896
    Equivalent to 149 /8s, 174 /16s and 118 /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:               91.9
Total number of prefixes smaller than registry allocations:      166200

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

Prefixes being announced by APNIC Region ASes:                    97520
    Total APNIC prefixes after maximum aggregation:               31610
    APNIC Deaggregation factor:                                    3.09
Prefixes being announced from the APNIC address blocks:           93822
    Unique aggregates announced from the APNIC address blocks:    38983
APNIC Region origin ASes present in the Internet Routing Table:    4637
    APNIC Prefixes per ASN:                                       20.23
APNIC Region origin ASes announcing only one prefix:               1240
APNIC Region transit ASes present in the Internet Routing Table:    726
Average APNIC Region AS path length visible:                        4.3
    Max APNIC Region AS path length visible:                         19
Number of APNIC region 32-bit ASNs visible in the Routing Table:    134
Number of APNIC addresses announced to Internet:              635145824
    Equivalent to 37 /8s, 219 /16s and 142 /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:                    147631
    Total ARIN prefixes after maximum aggregation:                75140
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           119589
    Unique aggregates announced from the ARIN address blocks:     49078
ARIN Region origin ASes present in the Internet Routing Table:    14859
    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:    1587
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:               805016256
    Equivalent to 47 /8s, 251 /16s and 146 /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:                     97168
    Total RIPE prefixes after maximum aggregation:                52047
    RIPE Deaggregation factor:                                     1.87
Prefixes being announced from the RIPE address blocks:            89044
    Unique aggregates announced from the RIPE address blocks:     55638
RIPE Region origin ASes present in the Internet Routing Table:    16253
    RIPE Prefixes per ASN:                                         5.48
RIPE Region origin ASes announcing only one prefix:                7981
RIPE Region transit ASes present in the Internet Routing Table:    2588
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:    1301
Number of RIPE addresses announced to Internet:               497788360
    Equivalent to 29 /8s, 171 /16s and 165 /24s
    Percentage of available RIPE address space announced:          80.2

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:                   37373
    Total LACNIC prefixes after maximum aggregation:               8078
    LACNIC Deaggregation factor:                                   4.63
Prefixes being announced from the LACNIC address blocks:          36993
    Unique aggregates announced from the LACNIC address blocks:   19328
LACNIC Region origin ASes present in the Internet Routing Table:   1563
    LACNIC Prefixes per ASN:                                      23.67
LACNIC Region origin ASes announcing only one prefix:               440
LACNIC Region transit ASes present in the Internet Routing Table:   283
Average LACNIC Region AS path length visible:                       4.5
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   421
Number of LACNIC addresses announced to Internet:              95480968
    Equivalent to 5 /8s, 176 /16s and 236 /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:                   8721
    Total AfriNIC prefixes after maximum aggregation:              2083
    AfriNIC Deaggregation factor:                                  4.19
Prefixes being announced from the AfriNIC address blocks:          6744
    Unique aggregates announced from the AfriNIC address blocks:   2086
AfriNIC Region origin ASes present in the Internet Routing Table:   506
    AfriNIC Prefixes per ASN:                                     13.33
AfriNIC Region origin ASes announcing only one prefix:              160
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:             30813184
    Equivalent to 1 /8s, 214 /16s and 44 /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      11101         975   Korea Telecom (KIX)
17974     1715        503          36   PT TELEKOMUNIKASI INDONESIA
 7545     1638        303          86   TPG Internet Pty Ltd
 4755     1524        385         154   TATA Communications formerly 
 7552     1424       1064           7   Vietel Corporation
 9829     1163        989          28   BSNL National Internet Backbo
 9583     1119         81         490   Sify Limited
 4808     1100       2050         311   CNCGROUP IP network: China169
24560     1007        383         166   Bharti Airtel Ltd., Telemedia
18101      946        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     3449       3807         202   bellsouth.net, inc. 
 7029     3223       1016         199   Windstream Communications Inc
18566     2093        382         177   Covad Communications 
 1785     1865        679         122   PaeTec Communications, Inc.
20115     1620       1553         615   Charter Communications 
 4323     1607       1062         382   Time Warner Telecom
30036     1487        266         707   Mediacom Communications Corp 
22773     1486       2909         108   Cox Communications, Inc.
19262     1386       4683         400   Verizon Global Networks 
 7018     1298       7008         849   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     1714        480          15   Corbina telecom
 2118     1241         99          14   EUnet/RELCOM Autonomous Syste
15557     1095       2161          64   LDCOM NETWORKS
 6830      644       1928         413   UPC Distribution Services
34984      638        188         172   BILISIM TELEKOM
31148      613         35           9   FreeNet ISP
20940      571        185         453   Akamai Technologies European 
12479      557        639          55   Uni2 Autonomous System
 8551      528        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     1723        321         167   TVCABLE BOGOTA 
28573     1616       1068          77   NET Servicos de Comunicao S.A
 8151     1460       2999         342   UniNet S.A. de C.V. 
 7303     1256        756         179   Telecom Argentina Stet-France
27947      642         73          96   Telconet S.A
22047      581        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      539        434          68   AVANTEL, S.A. 
11172      532         85         106   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     1031        958          13   TEDATA
24863      797        146          36   LINKdotNET AS number
 6713      485        649          18   Itissalat Al-MAGHRIB
 3741      280        939         229   The Internet Solution 
15706      239         32           6   Sudatel Internet Exchange Aut
33776      234         13          14   Starcomms Nigeria Limited
29571      214         17          12   Ci Telecom Autonomous system 
12258      196         28          61   Vodacom Internet Company 
24835      189         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     3449       3807         202   bellsouth.net, inc. 
 7029     3223       1016         199   Windstream Communications Inc
 4766     2473      11101         975   Korea Telecom (KIX)
18566     2093        382         177   Covad Communications 
 1785     1865        679         122   PaeTec Communications, Inc.
10620     1723        321         167   TVCABLE BOGOTA 
17974     1715        503          36   PT TELEKOMUNIKASI INDONESIA
 8402     1714        480          15   Corbina telecom
 7545     1638        303          86   TPG Internet Pty Ltd
20115     1620       1553         615   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      3223        3024      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1865        1743      PaeTec Communications, Inc.
 8402      1714        1699      Corbina telecom
17974      1715        1679      PT TELEKOMUNIKASI INDONESIA
10620      1723        1556      TVCABLE BOGOTA 
 7545      1638        1552      TPG Internet Pty Ltd
28573      1616        1539      NET Servicos de Comunicao S.A
 4766      2473        1498      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
37.60.208.0/20       31214     TIS-DIALOG Autonomous system
37.61.144.0/20       34977     PROCONO S.A.

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     
/13:458     /14:817     /15:1462    /16:12139   /17:6159    /18:10248   
/19:20303   /20:28150   /21:29098   /22:39196   /23:36683   /24:204402  
/25:1171    /26:1422    /27:782     /28:168     /29:55      /30:14      
/31:0       /32:18      

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

  ASN   No of nets  Total ann.   Description
 7029     2843          3223      Windstream Communications Inc
 6389     2120          3449      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
 8402     1693          1714      Corbina telecom
10620     1618          1723      TVCABLE BOGOTA 
30036     1444          1487      Mediacom Communications Corp 
11492     1116          1153      Cable One 
 1785     1067          1865      PaeTec Communications, Inc.
15557     1046          1095      LDCOM NETWORKS
 7011     1031          1148      Citizens Utilities 

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

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

   1:501       2:464       4:15        5:1         6:3         8:377    
  12:1950     13:1        14:583      15:11       16:3        17:6      
  20:9        23:112      24:1675     27:1178     31:821      32:65     
  33:2        34:2        36:8        37:102      38:794      40:114    
  41:2937     42:87       43:1        44:3        46:1204     47:3      
  49:319      50:517      52:13       54:1        55:7        56:2      
  57:41       58:948      59:491      60:345      61:1180     62:920    
  63:1978     64:4108     65:2286     66:4404     67:2022     68:1155   
  69:3142     70:920      71:428      72:1799     74:2653     75:445    
  76:320      77:966      78:904      79:500      80:1189     81:870    
  82:559      83:533      84:586      85:1153     86:743      87:905    
  88:341      89:1583     90:257      91:4432     92:531      93:1557   
  94:1363     95:1104     96:425      97:299      98:789      99:38     
 100:18      101:132     103:652     106:10      107:134     108:125    
 109:1467    110:688     111:839     112:429     113:525     114:601    
 115:757     116:851     117:727     118:901     119:1247    120:355    
 121:681     122:1630    123:1061    124:1338    125:1341    128:537    
 129:193     130:213     131:588     132:160     133:21      134:231    
 135:59      136:213     137:152     138:288     139:145     140:491    
 141:260     142:377     143:400     144:510     145:68      146:486    
 147:227     148:640     149:281     150:165     151:193     152:446    
 153:170     154:7       155:400     156:210     157:367     158:154    
 159:510     160:320     161:221     162:339     163:188     164:530    
 165:391     166:561     167:457     168:852     169:147     170:835    
 171:105     172:4       173:1779    174:584     175:416     176:371    
 177:464     178:1202    180:1227    181:43      182:693     183:274    
 184:404     185:1       186:1503    187:840     188:980     189:1164   
 190:5373    192:5988    193:5459    194:4198    195:3384    196:1290   
 197:168     198:3621    199:4324    200:5640    201:1697    202:8410   
 203:8602    204:4339    205:2429    206:2746    207:2803    208:4010   
 209:3544    210:2745    211:1474    212:1974    213:1825    214:847    
 215:95      216:4975    217:1473    218:557     219:341     220:1250   
 221:558     222:324     223:270    

End of report



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