Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 14 14:21:24 CDT 2011


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,
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 15 Oct, 2011

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

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

BGP routing table entries examined:                              377646
    Prefixes after maximum aggregation:                          169419
    Deaggregation factor:                                          2.23
    Unique aggregates announced to Internet:                     184801
Total ASes present in the Internet Routing Table:                 39069
    Prefixes per ASN:                                              9.67
Origin-only ASes present in the Internet Routing Table:           32330
Origin ASes announcing only one prefix:                           15494
Transit ASes present in the Internet Routing Table:                5223
Transit-only ASes present in the Internet Routing Table:            133
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      33
    Max AS path prepend of ASN (48687)                               24
Prefixes from unregistered ASNs in the Routing Table:              1442
    Unregistered ASNs in the Routing Table:                         793
Number of 32-bit ASNs allocated by the RIRs:                       1853
Number of 32-bit ASNs visible in the Routing Table:                1516
Prefixes from 32-bit ASNs in the Routing Table:                    3464
Special use prefixes present in the Routing Table:                    8
Prefixes being announced from unallocated address space:             89
Number of addresses announced to Internet:                   2483714272
    Equivalent to 148 /8s, 10 /16s and 120 /24s
    Percentage of available address space announced:               67.0
    Percentage of allocated address space announced:               67.0
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               91.5
Total number of prefixes smaller than registry allocations:      158719

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

Prefixes being announced by APNIC Region ASes:                    94500
    Total APNIC prefixes after maximum aggregation:               30930
    APNIC Deaggregation factor:                                    3.06
Prefixes being announced from the APNIC address blocks:           90960
    Unique aggregates announced from the APNIC address blocks:    37953
APNIC Region origin ASes present in the Internet Routing Table:    4582
    APNIC Prefixes per ASN:                                       19.85
APNIC Region origin ASes announcing only one prefix:               1261
APNIC Region transit ASes present in the Internet Routing Table:    702
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         19
Number of APNIC region 32-bit ASNs visible in the Routing Table:     93
Number of APNIC addresses announced to Internet:              628403296
    Equivalent to 37 /8s, 116 /16s and 172 /24s
    Percentage of available APNIC address space announced:         79.7

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:                    145503
    Total ARIN prefixes after maximum aggregation:                74267
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           117507
    Unique aggregates announced from the ARIN address blocks:     47802
ARIN Region origin ASes present in the Internet Routing Table:    14725
    ARIN Prefixes per ASN:                                         7.98
ARIN Region origin ASes announcing only one prefix:                5665
ARIN Region transit ASes present in the Internet Routing Table:    1559
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:      12
Number of ARIN addresses announced to Internet:               804636672
    Equivalent to 47 /8s, 245 /16s and 200 /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:                     90583
    Total RIPE prefixes after maximum aggregation:                50537
    RIPE Deaggregation factor:                                     1.79
Prefixes being announced from the RIPE address blocks:            83285
    Unique aggregates announced from the RIPE address blocks:     53898
RIPE Region origin ASes present in the Internet Routing Table:    16041
    RIPE Prefixes per ASN:                                         5.19
RIPE Region origin ASes announcing only one prefix:                7967
RIPE Region transit ASes present in the Internet Routing Table:    2509
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:    1068
Number of RIPE addresses announced to Internet:               490801024
    Equivalent to 29 /8s, 65 /16s and 7 /24s
    Percentage of available RIPE address space announced:          79.1

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:                   34946
    Total LACNIC prefixes after maximum aggregation:               7861
    LACNIC Deaggregation factor:                                   4.45
Prefixes being announced from the LACNIC address blocks:          34338
    Unique aggregates announced from the LACNIC address blocks:   17889
LACNIC Region origin ASes present in the Internet Routing Table:   1539
    LACNIC Prefixes per ASN:                                      22.31
LACNIC Region origin ASes announcing only one prefix:               449
LACNIC Region transit ASes present in the Internet Routing Table:   280
Average LACNIC Region AS path length visible:                       4.5
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   339
Number of LACNIC addresses announced to Internet:              90805120
    Equivalent to 5 /8s, 105 /16s and 147 /24s
    Percentage of available LACNIC address space announced:        60.1

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:                   8488
    Total AfriNIC prefixes after maximum aggregation:              2006
    AfriNIC Deaggregation factor:                                  4.23
Prefixes being announced from the AfriNIC address blocks:          6576
    Unique aggregates announced from the AfriNIC address blocks:   1966
AfriNIC Region origin ASes present in the Internet Routing Table:   486
    AfriNIC Prefixes per ASN:                                     13.53
AfriNIC Region origin ASes announcing only one prefix:              152
AfriNIC Region transit ASes present in the Internet Routing Table:  105
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:             27811072
    Equivalent to 1 /8s, 168 /16s and 93 /24s
    Percentage of available AfriNIC address space announced:       41.4

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     2500      11063         960   Korea Telecom (KIX)
17974     1937        519          33   PT TELEKOMUNIKASI INDONESIA
 7545     1612        303          86   TPG Internet Pty Ltd
 4755     1540        639         173   TATA Communications formerly 
 7552     1387       1064           7   Vietel Corporation
 9829     1165        989          28   BSNL National Internet Backbo
 9583     1087         80         503   Sify Limited
 4808     1081       2100         308   CNCGROUP IP network: China169
24560     1018        342         229   Bharti Airtel Ltd., Telemedia
18101      952        165         142   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     3547       3815         221   bellsouth.net, inc. 
 7029     2119       1016         197   Windstream Communications Inc
18566     2098        383         177   Covad Communications 
 1785     1836        680         121   PaeTec Communications, Inc.
 4323     1631       1083         392   Time Warner Telecom
20115     1591       1541         635   Charter Communications 
22773     1461       2907         100   Cox Communications, Inc.
19262     1395       4728         400   Verizon Global Networks 
30036     1389        250         673   Mediacom Communications Corp 
 7018     1343       7079         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     1455        352          13   Corbina telecom
 6830      653       1927         415   UPC Distribution Services
34984      582        108         180   BILISIM TELEKOM
20940      544        183         418   Akamai Technologies European 
 3320      502       8169         384   Deutsche Telekom AG
 3292      482       2082         408   TDC Tele Danmark
12479      482        593           7   Uni2 Autonomous System
 8866      458        133          26   Bulgarian Telecommunication C
29049      424         31          55   AzerSat LLC.
 8551      404        354          44   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     1681        310         155   TVCABLE BOGOTA 
 8151     1425       2861         349   UniNet S.A. de C.V. 
28573     1376       1015          68   NET Servicos de Comunicao S.A
 7303     1164        683         175   Telecom Argentina Stet-France
22047      580        322          17   VTR PUNTO NET S.A. 
27947      578         72          83   Telconet S.A
 6503      574        450          69   AVANTEL, S.A. 
 7738      553       1050          31   Telecomunicacoes da Bahia S.A
 3816      527        230         101   Empresa Nacional de Telecomun
11172      522         85          95   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
24863      802        146          36   LINKdotNET AS number
 8452      633        446          12   TEDATA
15475      444         74           8   Nile Online
36992      298        415          19   Etisalat MISR
 3741      278        938         230   The Internet Solution 
15706      244         32           6   Sudatel Internet Exchange Aut
 6713      242        519          14   Itissalat Al-MAGHRIB
29571      217         17          13   Ci Telecom Autonomous system 
33776      207         13          14   Starcomms Nigeria Limited
12258      198         28          58   Vodacom Internet Company 

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     3547       3815         221   bellsouth.net, inc. 
 4766     2500      11063         960   Korea Telecom (KIX)
 7029     2119       1016         197   Windstream Communications Inc
18566     2098        383         177   Covad Communications 
17974     1937        519          33   PT TELEKOMUNIKASI INDONESIA
 1785     1836        680         121   PaeTec Communications, Inc.
10620     1681        310         155   TVCABLE BOGOTA 
 4323     1631       1083         392   Time Warner Telecom
 7545     1612        303          86   TPG Internet Pty Ltd
20115     1591       1541         635   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      2119        1922      Windstream Communications Inc
18566      2098        1921      Covad Communications 
17974      1937        1904      PT TELEKOMUNIKASI INDONESIA
 1785      1836        1715      PaeTec Communications, Inc.
 4766      2500        1540      Korea Telecom (KIX)
10620      1681        1526      TVCABLE BOGOTA 
 7545      1612        1526      TPG Internet Pty Ltd
 8402      1455        1442      Corbina telecom
 7552      1387        1380      Vietel Corporation
 4755      1540        1367      TATA Communications formerly 

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
128.0.80.0/24        30977     JSC "Yugra-Telecom"
128.0.81.0/24        30977     JSC "Yugra-Telecom"
128.0.82.0/24        30977     JSC "Yugra-Telecom"
128.0.83.0/24        30977     JSC "Yugra-Telecom"
128.0.84.0/24        30977     JSC "Yugra-Telecom"
128.0.85.0/24        30977     JSC "Yugra-Telecom"
128.0.86.0/24        30977     JSC "Yugra-Telecom"
128.0.87.0/24        30977     JSC "Yugra-Telecom"

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

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
24.225.128.0/18      36377     Comcast Telecommunications, I
24.225.192.0/23      36377     Comcast Telecommunications, I
24.225.192.0/18      36377     Comcast Telecommunications, I
24.225.224.0/21      36377     Comcast Telecommunications, I
24.225.237.0/24      36377     Comcast Telecommunications, I
24.225.248.0/21      36377     Comcast Telecommunications, I
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 

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      /12:235     
/13:464     /14:808     /15:1425    /16:11992   /17:6030    /18:10040   
/19:19927   /20:27282   /21:27301   /22:36966   /23:35015   /24:196595  
/25:1149    /26:1355    /27:745     /28:169     /29:4       /30:0       
/31:0       /32:5       

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

  ASN   No of nets  Total ann.   Description
 6389     2186          3547      bellsouth.net, inc. 
18566     2047          2098      Covad Communications 
 7029     1806          2119      Windstream Communications Inc
10620     1576          1681      TVCABLE BOGOTA 
 8402     1432          1455      Corbina telecom
30036     1351          1389      Mediacom Communications Corp 
11492     1115          1153      Cable One 
 1785     1056          1836      PaeTec Communications, Inc.
 7011     1048          1166      Citizens Utilities 
22773      949          1461      Cox Communications, Inc.

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

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

   1:401       2:479       4:15        5:1         6:3         8:357    
  12:1954     13:1        14:541      15:11       16:3        17:7      
  20:9        23:58       24:1682     27:959      31:598      32:65     
  33:4        34:2        36:4        38:752      40:108      41:2630   
  42:50       44:3        46:990      47:3        49:268      50:447    
  52:13       55:6        56:2        57:37       58:876      59:493    
  60:364      61:1191     62:1093     63:1930     64:4103     65:2306   
  66:4255     67:1961     68:1156     69:3228     70:883      71:377    
  72:1863     74:2572     75:378      76:346      77:897      78:862    
  79:479      80:1124     81:825      82:500      83:536      84:637    
  85:1117     86:397      87:902      88:354      89:1590     90:269    
  91:4199     92:527      93:1512     94:1303     95:1046     96:438    
  97:283      98:908      99:37      101:214     103:359     106:70     
 107:66      108:54      109:1059    110:667     111:793     112:327    
 113:480     114:602     115:699     116:879     117:715     118:898    
 119:1240    120:339     121:693     122:1565    123:1032    124:1363   
 125:1385    128:256     129:178     130:166     131:587     132:121    
 133:21      134:218     135:54      136:213     137:139     138:289    
 139:120     140:488     141:294     142:389     143:428     144:493    
 145:63      146:473     147:215     148:635     149:258     150:164    
 151:192     152:448     153:178     154:7       155:387     156:207    
 157:359     158:151     159:476     160:321     161:214     162:339    
 163:175     164:509     165:364     166:536     167:435     168:745    
 169:145     170:872     171:85      172:4       173:1691    174:669    
 175:423     176:272     177:322     178:1054    180:1115    181:36     
 182:635     183:215     184:371     185:1       186:1284    187:666    
 188:928     189:850     190:5096    192:5905    193:5023    194:3544   
 195:3093    196:1235    197:169     198:3631    199:4152    200:5519   
 201:1655    202:8566    203:8477    204:4290    205:2366    206:2672   
 207:2821    208:4049    209:3594    210:2681    211:1454    212:2048   
 213:1768    214:796     215:90      216:4985    217:1617    218:561    
 219:336     220:1241    221:515     222:344     223:280    

End of report



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