[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jun 8 19:03:20 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 09 Jun, 2012

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

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

BGP routing table entries examined:                              413039
    Prefixes after maximum aggregation:                          175026
    Deaggregation factor:                                          2.36
    Unique aggregates announced to Internet:                     201617
Total ASes present in the Internet Routing Table:                 41269
    Prefixes per ASN:                                             10.01
Origin-only ASes present in the Internet Routing Table:           33286
Origin ASes announcing only one prefix:                           15684
Transit ASes present in the Internet Routing Table:                5524
Transit-only ASes present in the Internet Routing Table:            140
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      28
    Max AS path prepend of ASN ( 36992)                              22
Prefixes from unregistered ASNs in the Routing Table:               395
    Unregistered ASNs in the Routing Table:                         138
Number of 32-bit ASNs allocated by the RIRs:                       2815
Number of 32-bit ASNs visible in the Routing Table:                2459
Prefixes from 32-bit ASNs in the Routing Table:                    6257
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            158
Number of addresses announced to Internet:                   2561425708
    Equivalent to 152 /8s, 172 /16s and 65 /24s
    Percentage of available address space announced:               69.1
    Percentage of allocated address space announced:               69.2
    Percentage of available address space allocated:               99.9
    Percentage of address space in use by end-sites:               92.8
Total number of prefixes smaller than registry allocations:      171497

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

Prefixes being announced by APNIC Region ASes:                   100699
    Total APNIC prefixes after maximum aggregation:               32592
    APNIC Deaggregation factor:                                    3.09
Prefixes being announced from the APNIC address blocks:           97153
    Unique aggregates announced from the APNIC address blocks:    40289
APNIC Region origin ASes present in the Internet Routing Table:    4708
    APNIC Prefixes per ASN:                                       20.64
APNIC Region origin ASes announcing only one prefix:               1257
APNIC Region transit ASes present in the Internet Routing Table:    739
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         24
Number of APNIC region 32-bit ASNs visible in the Routing Table:    224
Number of APNIC addresses announced to Internet:              648549440
    Equivalent to 38 /8s, 168 /16s and 20 /24s
    Percentage of available APNIC address space announced:         82.2

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, 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:                    151599
    Total ARIN prefixes after maximum aggregation:                77134
    ARIN Deaggregation factor:                                     1.97
Prefixes being announced from the ARIN address blocks:           121982
    Unique aggregates announced from the ARIN address blocks:     51397
ARIN Region origin ASes present in the Internet Routing Table:    15161
    ARIN Prefixes per ASN:                                         8.05
ARIN Region origin ASes announcing only one prefix:                5758
ARIN Region transit ASes present in the Internet Routing Table:    1601
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:      17
Number of ARIN addresses announced to Internet:               816518336
    Equivalent to 48 /8s, 171 /16s and 20 /24s
    Percentage of available ARIN address space announced:          65.1

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:                    102916
    Total RIPE prefixes after maximum aggregation:                54777
    RIPE Deaggregation factor:                                     1.88
Prefixes being announced from the RIPE address blocks:            94838
    Unique aggregates announced from the RIPE address blocks:     59810
RIPE Region origin ASes present in the Internet Routing Table:    16620
    RIPE Prefixes per ASN:                                         5.71
RIPE Region origin ASes announcing only one prefix:                8068
RIPE Region transit ASes present in the Internet Routing Table:    2663
Average RIPE Region AS path length visible:                         5.0
    Max RIPE Region AS path length visible:                          28
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1626
Number of RIPE addresses announced to Internet:               515524868
    Equivalent to 30 /8s, 186 /16s and 73 /24s
    Percentage of available RIPE address space announced:          83.0

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
                       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,
                       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:                   41994
    Total LACNIC prefixes after maximum aggregation:               8290
    LACNIC Deaggregation factor:                                   5.07
Prefixes being announced from the LACNIC address blocks:          42193
    Unique aggregates announced from the LACNIC address blocks:   20602
LACNIC Region origin ASes present in the Internet Routing Table:   1601
    LACNIC Prefixes per ASN:                                      26.35
LACNIC Region origin ASes announcing only one prefix:               436
LACNIC Region transit ASes present in the Internet Routing Table:   306
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:   587
Number of LACNIC addresses announced to Internet:             101954184
    Equivalent to 6 /8s, 19 /16s and 178 /24s
    Percentage of available LACNIC address space announced:        67.5

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,
                       200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   9388
    Total AfriNIC prefixes after maximum aggregation:              2169
    AfriNIC Deaggregation factor:                                  4.33
Prefixes being announced from the AfriNIC address blocks:          7442
    Unique aggregates announced from the AfriNIC address blocks:   2195
AfriNIC Region origin ASes present in the Internet Routing Table:   544
    AfriNIC Prefixes per ASN:                                     13.68
AfriNIC Region origin ASes announcing only one prefix:              165
AfriNIC Region transit ASes present in the Internet Routing Table:  120
Average AfriNIC Region AS path length visible:                      4.5
    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:             31836160
    Equivalent to 1 /8s, 229 /16s and 200 /24s
    Percentage of available AfriNIC address space announced:       47.4

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     2637      11113        1122   Korea Telecom (KIX)
17974     1928        530          81   PT TELEKOMUNIKASI INDONESIA
 7545     1682        301          86   TPG Internet Pty Ltd
 4755     1590        385         155   TATA Communications formerly 
 9829     1297       1085          28   BSNL National Internet Backbo
 9583     1175         87         502   Sify Limited
 7552     1173       1062          11   Vietel Corporation
 4808     1103       2049         314   CNCGROUP IP network: China169
24560     1029        385         163   Bharti Airtel Ltd., Telemedia
 9498      965        291          64   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     3409       3791         192   bellsouth.net, inc. 
 7029     3250        986         159   Windstream Communications Inc
18566     2091        382         181   Covad Communications 
 1785     1917        681         131   PaeTec Communications, Inc.
20115     1646       1570         616   Charter Communications 
22773     1644       2911         121   Cox Communications, Inc.
 4323     1574       1043         385   Time Warner Telecom
30036     1426        265         754   Mediacom Communications Corp 
 7018     1224      10013         823   AT&T WorldNet Services
11492     1189        216         356   Cable One 

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     1740        544          16   Corbina telecom
 2118     1226         97          14   EUnet/RELCOM Autonomous Syste
12479      718        699          84   Uni2 Autonomous System
34984      705        188         171   BILISIM TELEKOM
31148      684         37           9   FreeNet ISP
20940      667        219         523   Akamai Technologies European 
 6830      657       2217         426   UPC Distribution Services
 8551      580        364          61   Bezeq International
 3320      489       8442         402   Deutsche Telekom AG
 3292      474       2108         408   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     1932        342         205   TVCABLE BOGOTA 
28573     1923       1184          48   NET Servicos de Comunicao S.A
 6503     1532        418          65   AVANTEL, S.A. 
 8151     1496       3084         336   UniNet S.A. de C.V. 
 7303     1437        901         193   Telecom Argentina Stet-France
26615      903        760          32   Tim Brasil S.A.
27947      700         73          94   Telconet S.A
11172      644         91          73   Servicios Alestra S.A de C.V 
 3816      584        247          89   Empresa Nacional de Telecomun
22047      583        326          15   VTR PUNTO NET 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
 8452     1391        958          13   TEDATA
24863      846        274          35   LINKdotNET AS number
 6713      497        649          18   Itissalat Al-MAGHRIB
24835      321         80           8   RAYA Telecom - Egypt
 3741      262        905         223   The Internet Solution 
33776      210         12          21   Starcomms Nigeria Limited
12258      197         28          62   Vodacom Internet Company 
16637      170        664          87   MTN Network Solutions
29571      157         15          16   Ci Telecom Autonomous system 
36923      157         20           4   Swift Networks Limited

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     3409       3791         192   bellsouth.net, inc. 
 7029     3250        986         159   Windstream Communications Inc
 4766     2637      11113        1122   Korea Telecom (KIX)
18566     2091        382         181   Covad Communications 
10620     1932        342         205   TVCABLE BOGOTA 
17974     1928        530          81   PT TELEKOMUNIKASI INDONESIA
28573     1923       1184          48   NET Servicos de Comunicao S.A
 1785     1917        681         131   PaeTec Communications, Inc.
 8402     1740        544          16   Corbina telecom
 7545     1682        301          86   TPG Internet Pty Ltd

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      3250        3091      Windstream Communications Inc
18566      2091        1910      Covad Communications 
28573      1923        1875      NET Servicos de Comunicao S.A
17974      1928        1847      PT TELEKOMUNIKASI INDONESIA
 1785      1917        1786      PaeTec Communications, Inc.
10620      1932        1727      TVCABLE BOGOTA 
 8402      1740        1724      Corbina telecom
 7545      1682        1596      TPG Internet Pty Ltd
22773      1644        1523      Cox Communications, Inc.
 4766      2637        1515      Korea Telecom (KIX)

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
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
32873   UNALLOCATED  12.46.102.0/24       10912       InterNAP Network Ser
14764   UNALLOCATED  12.108.237.0/24       7018       AT&T WorldNet Servic

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
27.112.114.0/24      23884     Proimage Engineering and Comm
41.188.64.0/18       29544     Mauritanian Telecommunication

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       /9:13      /10:28      /11:82      /12:236     
/13:461     /14:832     /15:1505    /16:12298   /17:6303    /18:10641   
/19:20776   /20:29530   /21:31054   /22:40785   /23:38492   /24:216195  
/25:1236    /26:1449    /27:827     /28:172     /29:66      /30:17      
/31:0       /32:22      

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

  ASN   No of nets  Total ann.   Description
 7029     2910          3250      Windstream Communications Inc
 6389     2129          3409      bellsouth.net, inc. 
18566     2040          2091      Covad Communications 
 8402     1718          1740      Corbina telecom
30036     1366          1426      Mediacom Communications Corp 
 6503     1222          1532      AVANTEL, S.A. 
 8452     1190          1391      TEDATA
11492     1152          1189      Cable One 
22773     1089          1644      Cox Communications, Inc.
 7011     1073          1188      Citizens Utilities 

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

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

   1:555       2:746       3:1         4:13        5:51        6:3      
   8:425      12:2012     13:1        14:619      15:12       16:3      
  17:5        20:23       23:180      24:1778     27:1306     31:977    
  32:56       33:2        34:2        36:9        37:684      38:812    
  40:127      41:3269     42:135      44:3        46:1423     47:2      
  49:401      50:555      52:13       54:12       55:8        56:1      
  57:33       58:960      59:497      60:259      61:1212     62:981    
  63:2008     64:4233     65:2249     66:4451     67:2028     68:1158   
  69:3174     70:950      71:508      72:1824     74:2591     75:471    
  76:327      77:956      78:973      79:478      80:1225     81:939    
  82:663      83:543      84:491      85:1192     86:432      87:918    
  88:334      89:1726     90:293      91:4919     92:557      93:1391   
  94:1566     95:1213     96:367      97:315      98:900      99:38     
 100:8       101:261     103:1133    106:95      107:186     108:330    
 109:1359    110:775     111:923     112:417     113:616     114:629    
 115:846     116:956     117:721     118:923     119:1232    120:358    
 121:695     122:1668    123:1102    124:1388    125:1261    128:559    
 129:202     130:247     131:632     132:288     133:22      134:242    
 135:61      136:215     137:239     138:358     139:185     140:494    
 141:252     142:417     143:375     144:532     145:72      146:508    
 147:293     148:776     149:312     150:164     151:179     152:469    
 153:174     154:14      155:446     156:222     157:381     158:186    
 159:578     160:345     161:265     162:347     163:190     164:638    
 165:404     166:592     167:471     168:863     169:127     170:878    
 171:136     172:4       173:1766    174:604     175:433     176:540    
 177:821     178:1381    180:1234    181:91      182:1050    183:228    
 184:528     185:1       186:2318    187:1122    188:1340    189:1827   
 190:5601    192:5992    193:5516    194:4532    195:3390    196:1224   
 197:151     198:3664    199:4763    200:5896    201:1951    202:8618   
 203:8565    204:4347    205:2509    206:2772    207:2801    208:4007   
 209:3608    210:2761    211:1545    212:2034    213:1931    214:874    
 215:98      216:5102    217:1548    218:553     219:313     220:1235   
 221:569     222:317     223:321    

End of report


More information about the sanog mailing list