Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 26 18:50:52 UTC 2012


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
TRNOG, CaribNOG and the RIPE Routing Working Group.

Daily listings are sent to bgp-stats at lists.apnic.net

For historical data, please see http://thyme.rand.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

Routing Table Report   04:00 +10GMT Sat 27 Oct, 2012

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

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

BGP routing table entries examined:                              429634
    Prefixes after maximum aggregation:                          179531
    Deaggregation factor:                                          2.39
    Unique aggregates announced to Internet:                     211158
Total ASes present in the Internet Routing Table:                 42474
    Prefixes per ASN:                                             10.12
Origin-only ASes present in the Internet Routing Table:           33773
Origin ASes announcing only one prefix:                           15820
Transit ASes present in the Internet Routing Table:                5659
Transit-only ASes present in the Internet Routing Table:            145
Average AS path length visible in the Internet Routing Table:       4.6
    Max AS path length visible:                                      40
    Max AS path prepend of ASN ( 22394)                              36
Prefixes from unregistered ASNs in the Routing Table:               871
    Unregistered ASNs in the Routing Table:                         322
Number of 32-bit ASNs allocated by the RIRs:                       3412
Number of 32-bit ASNs visible in the Routing Table:                3042
Prefixes from 32-bit ASNs in the Routing Table:                    8244
Special use prefixes present in the Routing Table:                   13
Prefixes being announced from unallocated address space:            159
Number of addresses announced to Internet:                   2608859500
    Equivalent to 155 /8s, 128 /16s and 9 /24s
    Percentage of available address space announced:               70.5
    Percentage of allocated address space announced:               70.5
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               93.8
Total number of prefixes smaller than registry allocations:      150954

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

Prefixes being announced by APNIC Region ASes:                   103698
    Total APNIC prefixes after maximum aggregation:               32582
    APNIC Deaggregation factor:                                    3.18
Prefixes being announced from the APNIC address blocks:          104472
    Unique aggregates announced from the APNIC address blocks:    42967
APNIC Region origin ASes present in the Internet Routing Table:    4783
    APNIC Prefixes per ASN:                                       21.84
APNIC Region origin ASes announcing only one prefix:               1249
APNIC Region transit ASes present in the Internet Routing Table:    779
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         26
Number of APNIC region 32-bit ASNs visible in the Routing Table:    340
Number of APNIC addresses announced to Internet:              712220960
    Equivalent to 42 /8s, 115 /16s and 161 /24s
    Percentage of available APNIC address space announced:         83.2

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-133119
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, 150/8, 153/8,
                       163/8, 171/8, 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:                    154902
    Total ARIN prefixes after maximum aggregation:                78361
    ARIN Deaggregation factor:                                     1.98
Prefixes being announced from the ARIN address blocks:           155759
    Unique aggregates announced from the ARIN address blocks:     69605
ARIN Region origin ASes present in the Internet Routing Table:    15296
    ARIN Prefixes per ASN:                                        10.18
ARIN Region origin ASes announcing only one prefix:                5788
ARIN Region transit ASes present in the Internet Routing Table:    1600
Average ARIN Region AS path length visible:                         4.1
    Max ARIN Region AS path length visible:                          40
Number of ARIN region 32-bit ASNs visible in the Routing Table:      17
Number of ARIN addresses announced to Internet:              1087370112
    Equivalent to 64 /8s, 207 /16s and 243 /24s
    Percentage of available ARIN address space announced:          57.5

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, 128/8,
                       129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8,
                       137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8,
                       146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8,
                       157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8,
                       165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8,
                       173/8, 174/8, 184/8, 192/8, 198/8, 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:                    108872
    Total RIPE prefixes after maximum aggregation:                57549
    RIPE Deaggregation factor:                                     1.89
Prefixes being announced from the RIPE address blocks:           111543
    Unique aggregates announced from the RIPE address blocks:     72153
RIPE Region origin ASes present in the Internet Routing Table:    16922
    RIPE Prefixes per ASN:                                         6.59
RIPE Region origin ASes announcing only one prefix:                8139
RIPE Region transit ASes present in the Internet Routing Table:    2750
Average RIPE Region AS path length visible:                         5.1
    Max RIPE Region AS path length visible:                          28
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1984
Number of RIPE addresses announced to Internet:               648338212
    Equivalent to 38 /8s, 164 /16s and 219 /24s
    Percentage of available RIPE address space announced:          94.3

RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 196608-199679
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,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   44124
    Total LACNIC prefixes after maximum aggregation:               8743
    LACNIC Deaggregation factor:                                   5.05
Prefixes being announced from the LACNIC address blocks:          47539
    Unique aggregates announced from the LACNIC address blocks:   22817
LACNIC Region origin ASes present in the Internet Routing Table:   1686
    LACNIC Prefixes per ASN:                                      28.20
LACNIC Region origin ASes announcing only one prefix:               471
LACNIC Region transit ASes present in the Internet Routing Table:   315
Average LACNIC Region AS path length visible:                       4.7
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   696
Number of LACNIC addresses announced to Internet:             118264488
    Equivalent to 7 /8s, 12 /16s and 146 /24s
    Percentage of available LACNIC address space announced:        70.5

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,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                   9678
    Total AfriNIC prefixes after maximum aggregation:              2242
    AfriNIC Deaggregation factor:                                  4.32
Prefixes being announced from the AfriNIC address blocks:         10162
    Unique aggregates announced from the AfriNIC address blocks:   3476
AfriNIC Region origin ASes present in the Internet Routing Table:   567
    AfriNIC Prefixes per ASN:                                     17.92
AfriNIC Region origin ASes announcing only one prefix:              173
AfriNIC Region transit ASes present in the Internet Routing Table:  124
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:    5
Number of AfriNIC addresses announced to Internet:             42372864
    Equivalent to 2 /8s, 134 /16s and 143 /24s
    Percentage of available AfriNIC address space announced:       42.1

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 102/8, 105/8, 154/8, 196/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     2972      11558         900   Korea Telecom (KIX)
17974     2418        829          55   PT TELEKOMUNIKASI INDONESIA
 7545     1785        301          86   TPG Internet Pty Ltd
 4755     1610        375         158   TATA Communications formerly 
 9829     1398       1152          36   BSNL National Internet Backbo
 9583     1187         88         509   Sify Limited
 4808     1112       2056         314   CNCGROUP IP network: China169
 7552     1105       1062          11   Vietel Corporation
24560     1035        385         162   Bharti Airtel Ltd., Telemedia
 9498     1027        310          74   BHARTI Airtel Ltd.

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     3178       3724         164   bellsouth.net, inc. 
 7029     3132        989         161   Windstream Communications Inc
18566     2084        382         180   Covad Communications 
 1785     1928        678         126   PaeTec Communications, Inc.
22773     1909       2931         128   Cox Communications, Inc.
20115     1665       1586         617   Charter Communications 
 4323     1592       1155         393   Time Warner Telecom
30036     1373        274         726   Mediacom Communications Corp 
 7018     1276      10290         849   AT&T WorldNet Services
 7011     1222        334         692   Citizens Utilities 

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     1847        544          16   Corbina telecom
12479      853        776          64   Uni2 Autonomous System
34984      822        207         198   BILISIM TELEKOM
31148      726         37           9   FreeNet ISP
 6830      724       2314         446   UPC Distribution Services
13188      707         93         134   Educational Network
20940      699        223         548   Akamai Technologies European 
 2118      664         97          14   EUnet/RELCOM Autonomous Syste
58113      601         66         364   LIR DATACENTER TELECOM SRL
 8551      595        364          61   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     2224        378         227   TVCABLE BOGOTA 
28573     2138       1276          77   NET Servicos de Comunicao S.A
 7303     1661       1131         201   Telecom Argentina Stet-France
 8151     1590       3030         356   UniNet S.A. de C.V. 
 6503     1524        435          68   AVANTEL, S.A. 
27947      739         74          96   Telconet S.A
 3816      652        309          69   Empresa Nacional de Telecomun
14420      593         89         103   CORPORACION NACIONAL DE TELEC
11172      589         85          65   Servicios Alestra S.A de C.V 
 7738      585       1178          33   Telecomunicacoes da Bahia S.A

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

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
24863      899        275          36   LINKdotNET AS number
36998      772         48           3   MOBITEL
 8452      651        958          13   TEDATA
 6713      516        650          19   Itissalat Al-MAGHRIB
24835      287         80           8   RAYA Telecom - Egypt
 3741      267        906         225   The Internet Solution 
12258      194         28          66   Vodacom Internet Company 
15706      191         32           6   Sudatel Internet Exchange Aut
29975      191        667          21   Vodacom
16637      172        697          88   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     3178       3724         164   bellsouth.net, inc. 
 7029     3132        989         161   Windstream Communications Inc
 4766     2972      11558         900   Korea Telecom (KIX)
17974     2418        829          55   PT TELEKOMUNIKASI INDONESIA
10620     2224        378         227   TVCABLE BOGOTA 
28573     2138       1276          77   NET Servicos de Comunicao S.A
18566     2084        382         180   Covad Communications 
 1785     1928        678         126   PaeTec Communications, Inc.
22773     1909       2931         128   Cox Communications, Inc.
 8402     1847        544          16   Corbina telecom

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      3132        2971      Windstream Communications Inc
17974      2418        2363      PT TELEKOMUNIKASI INDONESIA
 4766      2972        2072      Korea Telecom (KIX)
28573      2138        2061      NET Servicos de Comunicao S.A
10620      2224        1997      TVCABLE BOGOTA 
18566      2084        1904      Covad Communications 
 8402      1847        1831      Corbina telecom
 1785      1928        1802      PaeTec Communications, Inc.
22773      1909        1781      Cox Communications, Inc.
 7545      1785        1699      TPG Internet Pty Ltd

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS  Designation  Network              Transit AS  Description
59505   UNALLOCATED  5.2.65.0/24          50673       Serverius AS
59505   UNALLOCATED  5.2.66.0/24          50673       Serverius AS
61408   UNALLOCATED  5.56.0.0/22            174       Cogent Communication
59414   UNALLOCATED  5.102.144.0/21       15576       Nextra backbone in D
59395   UNALLOCATED  5.133.16.0/21         3549       Global Crossing 
59407   UNALLOCATED  5.134.16.0/21        51167       Giga-Hosting GmbH
59521   UNALLOCATED  5.134.192.0/21       29518       Labs2
59441   UNALLOCATED  5.144.128.0/21       50810       Mobin Net Communicat
59581   UNALLOCATED  5.149.8.0/21         25577       C4L main AS
59457   UNALLOCATED  5.149.64.0/24        35567       DASTO semtel d.o.o.

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

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix             Origin AS  Description
128.0.24.0/21        41794     Altline LLC
128.0.64.0/22        49466     Declic Telecom SAS
128.0.68.0/22        49466     Declic Telecom SAS
128.0.72.0/21        23456     32-bit ASN transition
128.0.80.0/20        52041     Timer LTD
128.0.104.0/23       51848     FOP Gabidullina Ludmila Nikol
128.0.128.0/20       29285     AMT closed joint-stock compan
128.0.144.0/22       59675     >>UNKNOWN<<
128.0.160.0/21       23456     32-bit ASN transition
128.0.168.0/21       15772     W-NET Kiev

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
27.112.114.0/24      23884     Proimage Engineering and Comm
41.220.80.0/24       38925     DAC AS Germany

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        /8:18       /9:14      /10:29      /11:87      /12:241     
/13:478     /14:850     /15:1549    /16:12459   /17:6510    /18:10856   
/19:21231   /20:30542   /21:32534   /22:43081   /23:40258   /24:224641  
/25:1358    /26:1692    /27:907     /28:180     /29:77      /30:17      
/31:0       /32:25      

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

  ASN   No of nets  Total ann.   Description
 7029     2622          3132      Windstream Communications Inc
18566     2034          2084      Covad Communications 
 6389     1791          3178      bellsouth.net, inc. 
 8402     1549          1847      Corbina telecom
30036     1294          1373      Mediacom Communications Corp 
22773     1249          1909      Cox Communications, Inc.
11492     1149          1184      Cable One 
 6503     1054          1524      AVANTEL, S.A. 
 1785     1018          1928      PaeTec Communications, Inc.
 7011      957          1222      Citizens Utilities 

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

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

   1:645       2:785       3:1         4:13        5:581       6:3      
   8:478      12:1979     13:3        14:681      15:11       16:3      
  17:6        20:27       23:207      24:1787     27:1370     31:1030   
  32:54       33:2        34:2        36:7        37:917      38:835    
  39:2        40:136      41:2788     42:175      44:3        46:1638   
  47:2        49:461      50:612      52:12       54:25       55:7      
  56:4        57:27       58:983      59:546      60:237      61:1301   
  62:972      63:2005     64:4282     65:2228     66:4531     67:2083   
  68:1159     69:3228     70:986      71:506      72:1882     74:2614   
  75:478      76:308      77:975      78:1009     79:506      80:1234   
  81:982      82:623      83:542      84:526      85:1153     86:485    
  87:942      88:360      89:1810     90:303      91:5281     92:588    
  93:1445     94:1676     95:1264     96:395      97:325      98:967    
  99:39      100:30      101:292     103:1702    105:512     106:122    
 107:201     108:473     109:1612    110:810     111:977     112:436    
 113:734     114:632     115:869     116:888     117:758     118:948    
 119:1227    120:360     121:693     122:1694    123:1161    124:1339   
 125:1284    128:574     129:197     130:284     131:645     132:309    
 133:142     134:252     135:62      136:220     137:238     138:337    
 139:170     140:492     141:289     142:491     143:377     144:494    
 145:82      146:517     147:267     148:727     149:330     150:158    
 151:204     152:450     153:182     154:21      155:436     156:227    
 157:371     158:286     159:664     160:337     161:414     162:365    
 163:191     164:710     165:449     166:512     167:560     168:998    
 169:126     170:908     171:152     172:7       173:1702    174:611    
 175:452     176:779     177:1342    178:1619    180:1357    181:162    
 182:1108    183:314     184:610     185:42      186:2210    187:1374   
 188:1707    189:1598    190:5892    192:6040    193:5546    194:4275   
 195:3459    196:1234    197:248     198:3911    199:5083    200:6009   
 201:1962    202:8709    203:8720    204:4412    205:2521    206:2745   
 207:2805    208:4056    209:3626    210:2833    211:1536    212:2073   
 213:1830    214:884     215:87      216:5131    217:1559    218:572    
 219:307     220:1257    221:533     222:338     223:405    

End of report



More information about the NANOG mailing list