Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 7 14:54:40 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 08 Oct, 2011

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

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

BGP routing table entries examined:                              376147
    Prefixes after maximum aggregation:                          169003
    Deaggregation factor:                                          2.23
    Unique aggregates announced to Internet:                     185518
Total ASes present in the Internet Routing Table:                 38980
    Prefixes per ASN:                                              9.65
Origin-only ASes present in the Internet Routing Table:           32290
Origin ASes announcing only one prefix:                           15494
Transit ASes present in the Internet Routing Table:                5213
Transit-only ASes present in the Internet Routing Table:            134
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:              1658
    Unregistered ASNs in the Routing Table:                         841
Number of 32-bit ASNs allocated by the RIRs:                       1832
Number of 32-bit ASNs visible in the Routing Table:                1477
Prefixes from 32-bit ASNs in the Routing Table:                    3383
Special use prefixes present in the Routing Table:                   12
Prefixes being announced from unallocated address space:             95
Number of addresses announced to Internet:                   2483550208
    Equivalent to 148 /8s, 7 /16s and 248 /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:      157509

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

Prefixes being announced by APNIC Region ASes:                    94479
    Total APNIC prefixes after maximum aggregation:               30812
    APNIC Deaggregation factor:                                    3.07
Prefixes being announced from the APNIC address blocks:           90937
    Unique aggregates announced from the APNIC address blocks:    38010
APNIC Region origin ASes present in the Internet Routing Table:    4569
    APNIC Prefixes per ASN:                                       19.90
APNIC Region origin ASes announcing only one prefix:               1249
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:     90
Number of APNIC addresses announced to Internet:              628447584
    Equivalent to 37 /8s, 117 /16s and 89 /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:                    144302
    Total ARIN prefixes after maximum aggregation:                74084
    ARIN Deaggregation factor:                                     1.95
Prefixes being announced from the ARIN address blocks:           116427
    Unique aggregates announced from the ARIN address blocks:     48007
ARIN Region origin ASes present in the Internet Routing Table:    14715
    ARIN Prefixes per ASN:                                         7.91
ARIN Region origin ASes announcing only one prefix:                5670
ARIN Region transit ASes present in the Internet Routing Table:    1556
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:               805354752
    Equivalent to 48 /8s, 0 /16s and 189 /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:                     90213
    Total RIPE prefixes after maximum aggregation:                50506
    RIPE Deaggregation factor:                                     1.79
Prefixes being announced from the RIPE address blocks:            82867
    Unique aggregates announced from the RIPE address blocks:     54222
RIPE Region origin ASes present in the Internet Routing Table:    16019
    RIPE Prefixes per ASN:                                         5.17
RIPE Region origin ASes announcing only one prefix:                7969
RIPE Region transit ASes present in the Internet Routing Table:    2499
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:    1043
Number of RIPE addresses announced to Internet:               490533248
    Equivalent to 29 /8s, 60 /16s and 241 /24s
    Percentage of available RIPE address space announced:          79.0

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:                   35060
    Total LACNIC prefixes after maximum aggregation:               7852
    LACNIC Deaggregation factor:                                   4.47
Prefixes being announced from the LACNIC address blocks:          34492
    Unique aggregates announced from the LACNIC address blocks:   18093
LACNIC Region origin ASes present in the Internet Routing Table:   1532
    LACNIC Prefixes per ASN:                                      22.51
LACNIC Region origin ASes announcing only one prefix:               451
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:   329
Number of LACNIC addresses announced to Internet:              90288768
    Equivalent to 5 /8s, 97 /16s and 178 /24s
    Percentage of available LACNIC address space announced:        59.8

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:                   8536
    Total AfriNIC prefixes after maximum aggregation:              2003
    AfriNIC Deaggregation factor:                                  4.26
Prefixes being announced from the AfriNIC address blocks:          6622
    Unique aggregates announced from the AfriNIC address blocks:   1978
AfriNIC Region origin ASes present in the Internet Routing Table:   487
    AfriNIC Prefixes per ASN:                                     13.60
AfriNIC Region origin ASes announcing only one prefix:              155
AfriNIC Region transit ASes present in the Internet Routing Table:  104
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:    3
Number of AfriNIC addresses announced to Internet:             27800320
    Equivalent to 1 /8s, 168 /16s and 51 /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     2493      11047         956   Korea Telecom (KIX)
17974     1963        519          33   PT TELEKOMUNIKASI INDONESIA
 7545     1607        303          84   TPG Internet Pty Ltd
 4755     1543        638         176   TATA Communications formerly 
 7552     1394       1064           7   Vietel Corporation
24560     1180        345         206   Bharti Airtel Ltd., Telemedia
 9829     1165        989          28   BSNL National Internet Backbo
 9583     1087         80         503   Sify Limited
 4808     1074       2096         303   CNCGROUP IP network: China169
18101      951        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     3553       3817         222   bellsouth.net, inc. 
18566     1915        366         239   Covad Communications 
 7029     1897       1016         196   Windstream Communications Inc
 1785     1830        680         121   PaeTec Communications, Inc.
 4323     1626       1083         392   Time Warner Telecom
20115     1593       1541         636   Charter Communications 
22773     1458       2907         100   Cox Communications, Inc.
19262     1394       4728         400   Verizon Global Networks 
30036     1385        250         676   Mediacom Communications Corp 
 7018     1337       7049         875   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     1412        352          13   Corbina telecom
 6830      635       1890         410   UPC Distribution Services
34984      578        108         180   BILISIM TELEKOM
20940      543        183         417   Akamai Technologies European 
 3320      503       8169         385   Deutsche Telekom AG
12479      481        593           7   Uni2 Autonomous System
 3292      480       2082         407   TDC Tele Danmark
 8866      460        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     1680        310         154   TVCABLE BOGOTA 
 8151     1411       2839         344   UniNet S.A. de C.V. 
28573     1363       1013          79   NET Servicos de Comunicao S.A
 7303     1163        683         175   Telecom Argentina Stet-France
14420      756         59          87   CORPORACION NACIONAL DE TELEC
22047      579        322          17   VTR PUNTO NET S.A. 
 6503      575        450          69   AVANTEL, S.A. 
27947      575         71          83   Telconet S.A
 3816      536        232          95   Empresa Nacional de Telecomun
11172      521         85          94   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      814        146          36   LINKdotNET AS number
 8452      723        445          11   TEDATA
15475      445         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
12258      198         28          58   Vodacom Internet Company 
33776      197         13          13   Starcomms Nigeria Limited
29571      192         17          11   Ci Telecom Autonomous system 

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     3553       3817         222   bellsouth.net, inc. 
 4766     2493      11047         956   Korea Telecom (KIX)
17974     1963        519          33   PT TELEKOMUNIKASI INDONESIA
18566     1915        366         239   Covad Communications 
 7029     1897       1016         196   Windstream Communications Inc
 1785     1830        680         121   PaeTec Communications, Inc.
10620     1680        310         154   TVCABLE BOGOTA 
 4323     1626       1083         392   Time Warner Telecom
 7545     1607        303          84   TPG Internet Pty Ltd
20115     1593       1541         636   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
17974      1963        1930      PT TELEKOMUNIKASI INDONESIA
 1785      1830        1709      PaeTec Communications, Inc.
 7029      1897        1701      Windstream Communications Inc
18566      1915        1676      Covad Communications 
 4766      2493        1537      Korea Telecom (KIX)
10620      1680        1526      TVCABLE BOGOTA 
 7545      1607        1523      TPG Internet Pty Ltd
 8402      1412        1399      Corbina telecom
 7552      1394        1387      Vietel Corporation
 4755      1543        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
128.0.8.0/22         47926     Lutsche.net Ltd
128.0.12.0/22        47926     Lutsche.net Ltd
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      /11:82      /12:235     
/13:464     /14:806     /15:1422    /16:12001   /17:5999    /18:10038   
/19:19859   /20:27183   /21:27239   /22:36807   /23:34975   /24:195647  
/25:1112    /26:1319    /27:725     /28:167     /29:4       /30:0       
/31:0       /32:5       

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

  ASN   No of nets  Total ann.   Description
 6389     2190          3553      bellsouth.net, inc. 
18566     1871          1915      Covad Communications 
 7029     1589          1897      Windstream Communications Inc
10620     1575          1680      TVCABLE BOGOTA 
 8402     1389          1412      Corbina telecom
30036     1347          1385      Mediacom Communications Corp 
11492     1115          1153      Cable One 
 1785     1055          1830      PaeTec Communications, Inc.
 7011     1048          1167      Citizens Utilities 
22773      947          1458      Cox Communications, Inc.

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

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

   1:386       2:473       4:15        5:1         6:3         8:356    
  12:1951     13:1        14:533      15:11       16:3        17:7      
  20:10       23:54       24:1691     27:965      31:582      32:65     
  33:4        34:2        36:4        38:751      40:108      41:2639   
  42:48       44:3        46:998      47:3        49:264      50:436    
  52:13       55:5        56:2        57:37       58:882      59:491    
  60:365      61:1176     62:1088     63:1933     64:4047     65:2303   
  66:4014     67:1962     68:1106     69:3196     70:836      71:378    
  72:1849     74:2488     75:364      76:341      77:884      78:868    
  79:478      80:1128     81:840      82:497      83:504      84:624    
  85:1118     86:405      87:873      88:353      89:1601     90:269    
  91:4158     92:528      93:1374     94:1306     95:1028     96:437    
  97:280      98:899      99:37      101:210     103:342     106:70     
 107:61      108:54      109:1041    110:668     111:795     112:322    
 113:482     114:573     115:697     116:874     117:712     118:893    
 119:1232    120:338     121:692     122:1606    123:1020    124:1365   
 125:1381    128:253     129:175     130:166     131:584     132:112    
 133:21      134:214     135:54      136:213     137:139     138:288    
 139:125     140:496     141:292     142:387     143:420     144:493    
 145:63      146:472     147:215     148:636     149:266     150:151    
 151:193     152:447     153:179     154:7       155:386     156:207    
 157:329     158:151     159:467     160:320     161:206     162:337    
 163:179     164:513     165:367     166:537     167:434     168:744    
 169:145     170:864     171:86      172:1       173:1671    174:658    
 175:408     176:266     177:287     178:1053    180:1103    181:37     
 182:630     183:210     184:368     185:1       186:1513    187:670    
 188:928     189:858     190:5193    192:5911    193:5021    194:3528   
 195:3105    196:1241    197:186     198:3623    199:4142    200:5517   
 201:1646    202:8575    203:8489    204:4295    205:2364    206:2675   
 207:2822    208:4036    209:3452    210:2691    211:1457    212:2061   
 213:1779    214:793     215:90      216:4919    217:1601    218:560    
 219:339     220:1241    221:513     222:342     223:285    

End of report



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