Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Mar 16 13:57:39 CDT 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 17 Mar, 2012

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

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

BGP routing table entries examined:                              401129
    Prefixes after maximum aggregation:                          170803
    Deaggregation factor:                                          2.35
    Unique aggregates announced to Internet:                     194695
Total ASes present in the Internet Routing Table:                 40373
    Prefixes per ASN:                                              9.94
Origin-only ASes present in the Internet Routing Table:           32891
Origin ASes announcing only one prefix:                           15486
Transit ASes present in the Internet Routing Table:                5406
Transit-only ASes present in the Internet Routing Table:            141
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:               407
    Unregistered ASNs in the Routing Table:                         187
Number of 32-bit ASNs allocated by the RIRs:                       2322
Number of 32-bit ASNs visible in the Routing Table:                2076
Prefixes from 32-bit ASNs in the Routing Table:                    5015
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            687
Number of addresses announced to Internet:                   2526912912
    Equivalent to 150 /8s, 157 /16s and 161 /24s
    Percentage of available address space announced:               68.2
    Percentage of allocated address space announced:               68.2
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               92.1
Total number of prefixes smaller than registry allocations:      170384

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

Prefixes being announced by APNIC Region ASes:                    98366
    Total APNIC prefixes after maximum aggregation:               31927
    APNIC Deaggregation factor:                                    3.08
Prefixes being announced from the APNIC address blocks:           94757
    Unique aggregates announced from the APNIC address blocks:    39280
APNIC Region origin ASes present in the Internet Routing Table:    4667
    APNIC Prefixes per ASN:                                       20.30
APNIC Region origin ASes announcing only one prefix:               1233
APNIC Region transit ASes present in the Internet Routing Table:    728
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC region 32-bit ASNs visible in the Routing Table:    165
Number of APNIC addresses announced to Internet:              640873312
    Equivalent to 38 /8s, 50 /16s and 243 /24s
    Percentage of available APNIC address space announced:         81.3

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-132095, 132096-133119
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 175/8, 180/8,
                       182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8,
                       219/8, 220/8, 221/8, 222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    148801
    Total ARIN prefixes after maximum aggregation:                75607
    ARIN Deaggregation factor:                                     1.97
Prefixes being announced from the ARIN address blocks:           120341
    Unique aggregates announced from the ARIN address blocks:     49824
ARIN Region origin ASes present in the Internet Routing Table:    14938
    ARIN Prefixes per ASN:                                         8.06
ARIN Region origin ASes announcing only one prefix:                5674
ARIN Region transit ASes present in the Internet Routing Table:    1573
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          22
Number of ARIN region 32-bit ASNs visible in the Routing Table:      15
Number of ARIN addresses announced to Internet:               806524160
    Equivalent to 48 /8s, 18 /16s and 149 /24s
    Percentage of available ARIN address space announced:          64.1

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:                    100879
    Total RIPE prefixes after maximum aggregation:                52925
    RIPE Deaggregation factor:                                     1.91
Prefixes being announced from the RIPE address blocks:            92343
    Unique aggregates announced from the RIPE address blocks:     57046
RIPE Region origin ASes present in the Internet Routing Table:    16347
    RIPE Prefixes per ASN:                                         5.65
RIPE Region origin ASes announcing only one prefix:                7976
RIPE Region transit ASes present in the Internet Routing Table:    2618
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:    1415
Number of RIPE addresses announced to Internet:               502120968
    Equivalent to 29 /8s, 237 /16s and 194 /24s
    Percentage of available RIPE address space announced:          80.9

RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       196608-198655
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       176/8, 178/8, 185/8, 193/8, 194/8, 195/8, 212/8,
                       213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   39029
    Total LACNIC prefixes after maximum aggregation:               8078
    LACNIC Deaggregation factor:                                   4.83
Prefixes being announced from the LACNIC address blocks:          38752
    Unique aggregates announced from the LACNIC address blocks:   19591
LACNIC Region origin ASes present in the Internet Routing Table:   1572
    LACNIC Prefixes per ASN:                                      24.65
LACNIC Region origin ASes announcing only one prefix:               438
LACNIC Region transit ASes present in the Internet Routing Table:   289
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   476
Number of LACNIC addresses announced to Internet:              98357384
    Equivalent to 5 /8s, 220 /16s and 208 /24s
    Percentage of available LACNIC address space announced:        65.1

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:                   8782
    Total AfriNIC prefixes after maximum aggregation:              2113
    AfriNIC Deaggregation factor:                                  4.16
Prefixes being announced from the AfriNIC address blocks:          6876
    Unique aggregates announced from the AfriNIC address blocks:   2175
AfriNIC Region origin ASes present in the Internet Routing Table:   522
    AfriNIC Prefixes per ASN:                                     13.17
AfriNIC Region origin ASes announcing only one prefix:              165
AfriNIC Region transit ASes present in the Internet Routing Table:  116
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    5
Number of AfriNIC addresses announced to Internet:             31557120
    Equivalent to 1 /8s, 225 /16s and 134 /24s
    Percentage of available AfriNIC address space announced:       47.0

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     2492      11110         994   Korea Telecom (KIX)
17974     1744        503          36   PT TELEKOMUNIKASI INDONESIA
 7545     1652        303          87   TPG Internet Pty Ltd
 4755     1569        386         160   TATA Communications formerly 
 9583     1202         91         509   Sify Limited
 9829     1189       1001          30   BSNL National Internet Backbo
 7552     1162       1062          11   Vietel Corporation
 4808     1095       2048         312   CNCGROUP IP network: China169
24560     1012        384         166   Bharti Airtel Ltd., Telemedia
18101      948        130         160   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
 7029     3395       1006         158   Windstream Communications Inc
 6389     3384       3807         198   bellsouth.net, inc. 
18566     2091        382         177   Covad Communications 
 1785     1882        680         127   PaeTec Communications, Inc.
20115     1631       1558         628   Charter Communications 
 4323     1603       1060         382   Time Warner Telecom
22773     1547       2910         111   Cox Communications, Inc.
30036     1396        252         747   Mediacom Communications Corp 
 7018     1275       9776         835   AT&T WorldNet Services
11492     1164        212         415   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     1779        544          16   Corbina telecom
 2118     1427         97          13   EUnet/RELCOM Autonomous Syste
15557     1089       2247          55   LDCOM NETWORKS
34984      664        188         172   BILISIM TELEKOM
 6830      641       1943         412   UPC Distribution Services
12479      638        653          67   Uni2 Autonomous System
20940      628        201         487   Akamai Technologies European 
 8551      575        360          81   Bezeq International
31148      539         37           9   FreeNet ISP
 3320      533       8442         399   Deutsche Telekom AG

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     1789        328         143   TVCABLE BOGOTA 
28573     1721       1094          58   NET Servicos de Comunicao S.A
 8151     1484       3015         348   UniNet S.A. de C.V. 
 7303     1330        823         185   Telecom Argentina Stet-France
26615      900        676          30   Tim Brasil S.A.
27947      680         68         108   Telconet S.A
11172      635         91          73   Servicios Alestra S.A de C.V 
22047      584        326          15   VTR PUNTO NET S.A. 
 3816      559        240          89   Empresa Nacional de Telecomun
 6503      559        418          65   AVANTEL, 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     1258        958          13   TEDATA
24863      842        274          37   LINKdotNET AS number
 6713      489        649          18   Itissalat Al-MAGHRIB
 3741      271        923         228   The Internet Solution 
15706      227         32           6   Sudatel Internet Exchange Aut
12258      197         28          62   Vodacom Internet Company 
24835      182         80           8   RAYA Telecom - Egypt
33776      158         12          25   Starcomms Nigeria Limited
36923      157         20           4   Swift Networks Limited
29571      153         15          16   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
 7029     3395       1006         158   Windstream Communications Inc
 6389     3384       3807         198   bellsouth.net, inc. 
 4766     2492      11110         994   Korea Telecom (KIX)
18566     2091        382         177   Covad Communications 
 1785     1882        680         127   PaeTec Communications, Inc.
10620     1789        328         143   TVCABLE BOGOTA 
 8402     1779        544          16   Corbina telecom
17974     1744        503          36   PT TELEKOMUNIKASI INDONESIA
28573     1721       1094          58   NET Servicos de Comunicao S.A
 7545     1652        303          87   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
 6389      3384        3186      bellsouth.net, inc. 
18566      2091        1914      Covad Communications 
 8402      1779        1763      Corbina telecom
 1785      1882        1755      PaeTec Communications, Inc.
17974      1744        1708      PT TELEKOMUNIKASI INDONESIA
28573      1721        1663      NET Servicos de Comunicao S.A
10620      1789        1646      TVCABLE BOGOTA 
 7545      1652        1565      TPG Internet Pty Ltd
 4766      2492        1498      Korea Telecom (KIX)
22773      1547        1436      Cox Communications, Inc.

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

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

Bad AS  Designation  Network              Transit AS  Description
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.14.170.0/24        4323       Time Warner Telecom
32567   UNALLOCATED  12.25.107.0/24        4323       Time Warner Telecom
25639   UNALLOCATED  12.41.169.0/24        7018       AT&T WorldNet Servic
13317   UNALLOCATED  12.44.10.0/24         7018       AT&T WorldNet Servic
23502   UNALLOCATED  12.44.44.0/24         7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.103.0/24        7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.110.0/24         701       UUNET Technologies, 
16476   UNALLOCATED  12.46.27.0/24         7018       AT&T WorldNet Servic
32873   UNALLOCATED  12.46.100.0/23       10912       InterNAP Network Ser

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

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

Prefix             Origin AS  Description
128.0.0.0/21         12654     RIPE NCC RIS Project
128.0.24.0/24        12654     RIPE NCC RIS Project

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

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

Network            Origin AS  Description
14.192.0.0/22        45464     Room 201, TGU Bldg
14.192.8.0/22        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
23.27.0.0/20         54500     EGIHosting
23.27.16.0/20        54500     EGIHosting
23.27.32.0/20        54500     EGIHosting

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      /10:28      /11:81      /12:235     
/13:458     /14:821     /15:1475    /16:12185   /17:6236    /18:10418   
/19:20518   /20:28618   /21:29535   /22:40003   /23:37293   /24:209464  
/25:1218    /26:1453    /27:794     /28:169     /29:60      /30:17      
/31:0       /32:19      

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

  ASN   No of nets  Total ann.   Description
 7029     3051          3395      Windstream Communications Inc
 6389     2092          3384      bellsouth.net, inc. 
18566     2040          2091      Covad Communications 
 8402     1756          1779      Corbina telecom
10620     1686          1789      TVCABLE BOGOTA 
30036     1345          1396      Mediacom Communications Corp 
11492     1127          1164      Cable One 
 8452     1068          1258      TEDATA
 1785     1065          1882      PaeTec Communications, Inc.
 7011     1038          1152      Citizens Utilities 

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

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

   1:531       2:798       4:14        6:3         8:394      12:1972   
  13:1        14:599      15:11       16:3        17:7        20:8      
  23:144      24:1753     27:1239     31:956      32:62       33:2      
  34:2        36:8        37:259      38:777      40:122      41:3013   
  42:128      44:3        46:1421     47:3        49:342      50:515    
  52:13       54:5        55:10       56:3        57:38       58:953    
  59:495      60:278      61:1191     62:978      63:2014     64:4163   
  65:2285     66:4487     67:2000     68:1159     69:3170     70:900    
  71:389      72:1779     74:2583     75:490      76:319      77:968    
  78:979      79:497      80:1218     81:891      82:633      83:547    
  84:596      85:1186     86:726      87:910      88:335      89:1565   
  90:288      91:4598     92:517      93:1454     94:1393     95:1125   
  96:375      97:316      98:818      99:38      100:6       101:203    
 103:901     106:64      107:173     108:204     109:1531    110:746    
 111:881     112:441     113:562     114:617     115:776     116:868    
 117:723     118:906     119:1203    120:336     121:690     122:1626   
 123:1088    124:1364    125:1274    128:547     129:190     130:263    
 131:595     132:170     133:21      134:239     135:63      136:212    
 137:185     138:275     139:145     140:493     141:241     142:389    
 143:418     144:500     145:69      146:490     147:240     148:724    
 149:300     150:158     151:176     152:455     153:171     154:7      
 155:430     156:213     157:379     158:163     159:521     160:327    
 161:246     162:341     163:185     164:533     165:393     166:563    
 167:462     168:803     169:148     170:842     171:121     172:4      
 173:1715    174:596     175:434     176:416     177:553     178:1286   
 180:1132    181:73      182:793     183:284     184:445     185:1      
 186:2114    187:843     188:1060    189:1208    190:5534    192:5989   
 193:5588    194:4562    195:3639    196:1280    197:170     198:3616   
 199:4453    200:5750    201:1646    202:8431    203:8592    204:4347   
 205:2458    206:2720    207:2797    208:4073    209:3586    210:2764   
 211:1463    212:1966    213:1877    214:861     215:105     216:5053   
 217:1522    218:540     219:339     220:1231    221:552     222:324    
 223:325    

End of report



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