Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jan 6 13:25:22 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 07 Jan, 2012

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

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

BGP routing table entries examined:                              388994
    Prefixes after maximum aggregation:                          168547
    Deaggregation factor:                                          2.31
    Unique aggregates announced to Internet:                     190697
Total ASes present in the Internet Routing Table:                 39774
    Prefixes per ASN:                                              9.78
Origin-only ASes present in the Internet Routing Table:           32587
Origin ASes announcing only one prefix:                           15529
Transit ASes present in the Internet Routing Table:                5365
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:              2082
    Unregistered ASNs in the Routing Table:                        1044
Number of 32-bit ASNs allocated by the RIRs:                       2160
Number of 32-bit ASNs visible in the Routing Table:                1822
Prefixes from 32-bit ASNs in the Routing Table:                    4340
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            120
Number of addresses announced to Internet:                   2506673712
    Equivalent to 149 /8s, 104 /16s and 206 /24s
    Percentage of available address space announced:               67.6
    Percentage of allocated address space announced:               67.6
    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:      164906

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

Prefixes being announced by APNIC Region ASes:                    96263
    Total APNIC prefixes after maximum aggregation:               31431
    APNIC Deaggregation factor:                                    3.06
Prefixes being announced from the APNIC address blocks:           92611
    Unique aggregates announced from the APNIC address blocks:    38795
APNIC Region origin ASes present in the Internet Routing Table:    4630
    APNIC Prefixes per ASN:                                       20.00
APNIC Region origin ASes announcing only one prefix:               1254
APNIC Region transit ASes present in the Internet Routing Table:    730
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:    125
Number of APNIC addresses announced to Internet:              633118080
    Equivalent to 37 /8s, 188 /16s and 157 /24s
    Percentage of available APNIC address space announced:         80.3

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-132095, 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:                    147034
    Total ARIN prefixes after maximum aggregation:                74945
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           119074
    Unique aggregates announced from the ARIN address blocks:     49000
ARIN Region origin ASes present in the Internet Routing Table:    14841
    ARIN Prefixes per ASN:                                         8.02
ARIN Region origin ASes announcing only one prefix:                5683
ARIN Region transit ASes present in the Internet Routing Table:    1574
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:               804838592
    Equivalent to 47 /8s, 248 /16s and 220 /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:                     95494
    Total RIPE prefixes after maximum aggregation:                51954
    RIPE Deaggregation factor:                                     1.84
Prefixes being announced from the RIPE address blocks:            87490
    Unique aggregates announced from the RIPE address blocks:     55635
RIPE Region origin ASes present in the Internet Routing Table:    16229
    RIPE Prefixes per ASN:                                         5.39
RIPE Region origin ASes announcing only one prefix:                7979
RIPE Region transit ASes present in the Internet Routing Table:    2578
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:    1269
Number of RIPE addresses announced to Internet:               496218056
    Equivalent to 29 /8s, 147 /16s and 175 /24s
    Percentage of available RIPE address space announced:          79.9

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:                   37108
    Total LACNIC prefixes after maximum aggregation:               8068
    LACNIC Deaggregation factor:                                   4.60
Prefixes being announced from the LACNIC address blocks:          36658
    Unique aggregates announced from the LACNIC address blocks:   19174
LACNIC Region origin ASes present in the Internet Routing Table:   1561
    LACNIC Prefixes per ASN:                                      23.48
LACNIC Region origin ASes announcing only one prefix:               448
LACNIC Region transit ASes present in the Internet Routing Table:   287
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:   410
Number of LACNIC addresses announced to Internet:              95243144
    Equivalent to 5 /8s, 173 /16s and 75 /24s
    Percentage of available LACNIC address space announced:        63.1

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:                   8593
    Total AfriNIC prefixes after maximum aggregation:              2076
    AfriNIC Deaggregation factor:                                  4.14
Prefixes being announced from the AfriNIC address blocks:          6622
    Unique aggregates announced from the AfriNIC address blocks:   2089
AfriNIC Region origin ASes present in the Internet Routing Table:   509
    AfriNIC Prefixes per ASN:                                     13.01
AfriNIC Region origin ASes announcing only one prefix:              165
AfriNIC Region transit ASes present in the Internet Routing Table:  116
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:             30739456
    Equivalent to 1 /8s, 213 /16s and 12 /24s
    Percentage of available AfriNIC address space announced:       45.8

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     2467      11099         965   Korea Telecom (KIX)
17974     1719        503          37   PT TELEKOMUNIKASI INDONESIA
 7545     1630        303          86   TPG Internet Pty Ltd
 4755     1517        385         157   TATA Communications formerly 
 7552     1409       1064           7   Vietel Corporation
 9829     1172        989          28   BSNL National Internet Backbo
 9583     1111         81         496   Sify Limited
 4808     1091       2036         310   CNCGROUP IP network: China169
24560      986        381         164   Bharti Airtel Ltd., Telemedia
18101      975        131         156   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     3476       3814         217   bellsouth.net, inc. 
 7029     3161       1017         200   Windstream Communications Inc
18566     2093        382         177   Covad Communications 
 1785     1864        680         122   PaeTec Communications, Inc.
 4323     1620       1065         385   Time Warner Telecom
20115     1616       1551         619   Charter Communications 
22773     1518       2909         107   Cox Communications, Inc.
30036     1484        264         691   Mediacom Communications Corp 
19262     1389       4683         401   Verizon Global Networks 
 7018     1302       7013         853   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     1564        480          15   Corbina telecom
15557     1096       2161          64   LDCOM NETWORKS
 2118      672         99          14   EUnet/RELCOM Autonomous Syste
 6830      645       1928         414   UPC Distribution Services
34984      636        132         198   BILISIM TELEKOM
20940      563        183         449   Akamai Technologies European 
12479      551        636          53   Uni2 Autonomous System
 3320      531       8162         397   Deutsche Telekom AG
 8551      504        360          81   Bezeq International
 3292      480       2106         407   TDC Tele Danmark

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     1721        319         159   TVCABLE BOGOTA 
28573     1573       1064          76   NET Servicos de Comunicao S.A
 8151     1459       2989         346   UniNet S.A. de C.V. 
 7303     1255        756         178   Telecom Argentina Stet-France
27947      632         73          95   Telconet S.A
22047      582        322          17   VTR PUNTO NET S.A. 
 7738      551       1050          31   Telecomunicacoes da Bahia S.A
 3816      547        237          91   Empresa Nacional de Telecomun
 6503      538        434          67   AVANTEL, S.A. 
11172      533         86          99   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     1032        958          13   TEDATA
24863      794        146          36   LINKdotNET AS number
 3741      280        939         229   The Internet Solution 
 6713      250        649          18   Itissalat Al-MAGHRIB
15706      242         32           6   Sudatel Internet Exchange Aut
33776      240         13           8   Starcomms Nigeria Limited
29571      217         17          13   Ci Telecom Autonomous system 
12258      195         28          60   Vodacom Internet Company 
24835      191         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     3476       3814         217   bellsouth.net, inc. 
 7029     3161       1017         200   Windstream Communications Inc
 4766     2467      11099         965   Korea Telecom (KIX)
18566     2093        382         177   Covad Communications 
 1785     1864        680         122   PaeTec Communications, Inc.
10620     1721        319         159   TVCABLE BOGOTA 
17974     1719        503          37   PT TELEKOMUNIKASI INDONESIA
 7545     1630        303          86   TPG Internet Pty Ltd
 4323     1620       1065         385   Time Warner Telecom
20115     1616       1551         619   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      3161        2961      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1864        1742      PaeTec Communications, Inc.
17974      1719        1682      PT TELEKOMUNIKASI INDONESIA
10620      1721        1562      TVCABLE BOGOTA 
 8402      1564        1549      Corbina telecom
 7545      1630        1544      TPG Internet Pty Ltd
 4766      2467        1502      Korea Telecom (KIX)
28573      1573        1497      NET Servicos de Comunicao S.A
22773      1518        1411      Cox Communications, Inc.

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
37.35.8.0/21          8400     "TELEKOM SRBIJA" a.d.
37.35.64.0/21        33983     IP network of ARTMOTION n.p.s

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      /12:237     
/13:465     /14:815     /15:1453    /16:12097   /17:6127    /18:10171   
/19:20180   /20:27922   /21:28372   /22:38717   /23:36054   /24:202631  
/25:1177    /26:1403    /27:780     /28:167     /29:55      /30:14      
/31:0       /32:18      

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

  ASN   No of nets  Total ann.   Description
 7029     2789          3161      Windstream Communications Inc
 6389     2121          3476      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
10620     1616          1721      TVCABLE BOGOTA 
 8402     1543          1564      Corbina telecom
30036     1443          1484      Mediacom Communications Corp 
11492     1115          1152      Cable One 
 1785     1066          1864      PaeTec Communications, Inc.
 7011     1051          1168      Citizens Utilities 
15557     1046          1096      LDCOM NETWORKS

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

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

   1:494       2:417       4:15        5:1         6:3         8:364    
  12:1949     13:1        14:583      15:11       16:3        17:7      
  20:9        23:85       24:1717     27:1171     31:787      32:67     
  33:2        34:2        36:4        37:15       38:794      40:114    
  41:3004     42:85       43:1        44:3        46:1166     47:3      
  49:297      50:501      52:13       55:6        56:2        57:41     
  58:942      59:487      60:343      61:1177     62:938      63:1966   
  64:4116     65:2302     66:4368     67:1989     68:1165     69:3147   
  70:921      71:419      72:1787     74:2645     75:442      76:321    
  77:940      78:894      79:501      80:1187     81:859      82:523    
  83:530      84:581      85:1167     86:748      87:911      88:349    
  89:1583     90:261      91:4403     92:534      93:1523     94:1336   
  95:1049     96:401      97:295      98:788      99:38      100:18     
 101:127     103:612     106:10      107:126     108:101     109:1422   
 110:681     111:835     112:429     113:494     114:599     115:738    
 116:867     117:724     118:889     119:1234    120:386     121:673    
 122:1621    123:1051    124:1338    125:1351    128:536     129:192    
 130:189     131:586     132:163     133:21      134:226     135:54     
 136:213     137:151     138:286     139:135     140:490     141:261    
 142:379     143:403     144:501     145:67      146:474     147:222    
 148:632     149:276     150:165     151:192     152:444     153:169    
 154:7       155:393     156:210     157:366     158:155     159:511    
 160:345     161:221     162:336     163:187     164:523     165:393    
 166:552     167:454     168:816     169:147     170:828     171:95     
 172:4       173:1785    174:588     175:417     176:333     177:442    
 178:1169    180:1215    181:43      182:686     183:267     184:422    
 185:1       186:1479    187:816     188:1006    189:1169    190:5328   
 192:5988    193:5447    194:3788    195:3192    196:1286    197:174    
 198:3619    199:4256    200:5570    201:1690    202:8512    203:8592   
 204:4342    205:2423    206:2701    207:2803    208:4009    209:3545   
 210:2747    211:1477    212:1963    213:1813    214:837     215:93     
 216:4909    217:1478    218:568     219:338     220:1243    221:563    
 222:324     223:266    

End of report



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