Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 16 13:10:56 CDT 2010


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to bgp-stats at lists.apnic.net

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

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

Routing Table Report   04:00 +10GMT Sat 17 Apr, 2010

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

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

BGP routing table entries examined:                              318575
    Prefixes after maximum aggregation:                          147127
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     154828
Total ASes present in the Internet Routing Table:                 33808
    Prefixes per ASN:                                              9.42
Origin-only ASes present in the Internet Routing Table:           29345
Origin ASes announcing only one prefix:                           14328
Transit ASes present in the Internet Routing Table:                4463
Transit-only ASes present in the Internet Routing Table:            103
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (32374)                               19
Prefixes from unregistered ASNs in the Routing Table:               554
    Unregistered ASNs in the Routing Table:                         131
Number of 32-bit ASNs allocated by the RIRs:                        519
Prefixes from 32-bit ASNs in the Routing Table:                     571
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            212
Number of addresses announced to Internet:                   2229015040
    Equivalent to 132 /8s, 220 /16s and 18 /24s
    Percentage of available address space announced:               60.1
    Percentage of allocated address space announced:               66.1
    Percentage of available address space allocated:               90.9
    Percentage of address space in use by end-sites:               82.2
Total number of prefixes smaller than registry allocations:      152695

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

Prefixes being announced by APNIC Region ASes:                    76197
    Total APNIC prefixes after maximum aggregation:               26400
    APNIC Deaggregation factor:                                    2.89
Prefixes being announced from the APNIC address blocks:           73044
    Unique aggregates announced from the APNIC address blocks:    32021
APNIC Region origin ASes present in the Internet Routing Table:    3996
    APNIC Prefixes per ASN:                                       18.28
APNIC Region origin ASes announcing only one prefix:               1098
APNIC Region transit ASes present in the Internet Routing Table:    620
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              507789376
    Equivalent to 30 /8s, 68 /16s and 64 /24s
    Percentage of available APNIC address space announced:         75.7

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079
                       55296-56319, 131072-132095
APNIC Address Blocks     1/8,  14/8,  27/8,  43/8,  58/8,  59/8,  60/8,
                        61/8, 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:                    133500
    Total ARIN prefixes after maximum aggregation:                68798
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           106421
    Unique aggregates announced from the ARIN address blocks:     40586
ARIN Region origin ASes present in the Internet Routing Table:    13635
    ARIN Prefixes per ASN:                                         7.80
ARIN Region origin ASes announcing only one prefix:                5274
ARIN Region transit ASes present in the Internet Routing Table:    1356
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               725464096
    Equivalent to 43 /8s, 61 /16s and 180 /24s
    Percentage of available ARIN address space announced:          61.8

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,  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,  54/8,
                        55/8,  56/8,  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, 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:                     73035
    Total RIPE prefixes after maximum aggregation:                42605
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            65990
    Unique aggregates announced from the RIPE address blocks:     43438
RIPE Region origin ASes present in the Internet Routing Table:    14368
    RIPE Prefixes per ASN:                                         4.59
RIPE Region origin ASes announcing only one prefix:                7437
RIPE Region transit ASes present in the Internet Routing Table:    2143
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               421255840
    Equivalent to 25 /8s, 27 /16s and 218 /24s
    Percentage of available RIPE address space announced:          78.5

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, 196608-197631
RIPE Address Blocks      2/8,  25/8,  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, 178/8, 193/8, 194/8,
                       195/8, 212/8, 213/8, 217/8,

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

Prefixes being announced by LACNIC Region ASes:                   28349
    Total LACNIC prefixes after maximum aggregation:               6735
    LACNIC Deaggregation factor:                                   4.21
Prefixes being announced from the LACNIC address blocks:          26715
    Unique aggregates announced from the LACNIC address blocks:   13783
LACNIC Region origin ASes present in the Internet Routing Table:   1274
    LACNIC Prefixes per ASN:                                      20.97
LACNIC Region origin ASes announcing only one prefix:               415
LACNIC Region transit ASes present in the Internet Routing Table:   222
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC addresses announced to Internet:              72463104
    Equivalent to 4 /8s, 81 /16s and 179 /24s
    Percentage of available LACNIC address space announced:        72.0

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  186/8, 187/8, 189/8, 190/8, 200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   6488
    Total AfriNIC prefixes after maximum aggregation:              1782
    AfriNIC Deaggregation factor:                                  3.64
Prefixes being announced from the AfriNIC address blocks:          4825
    Unique aggregates announced from the AfriNIC address blocks:   1517
AfriNIC Region origin ASes present in the Internet Routing Table:   354
    AfriNIC Prefixes per ASN:                                     13.63
AfriNIC Region origin ASes announcing only one prefix:              104
AfriNIC Region transit ASes present in the Internet Routing Table:   78
Average AfriNIC Region AS path length visible:                      3.9
    Max AfriNIC Region AS path length visible:                       18
Number of AfriNIC addresses announced to Internet:             14019840
    Equivalent to 0 /8s, 213 /16s and 237 /24s
    Percentage of available AfriNIC address space announced:       41.8

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1843       8406         479   Korea Telecom (KIX)
17488     1312        136         127   Hathway IP Over Cable Interne
 4755     1300        290         147   TATA Communications formerly 
 7545     1111        202         106   TPG Internet Pty Ltd
 4134     1030      20395         398   CHINANET-BACKBONE
17974     1007        281          18   PT TELEKOMUNIKASI INDONESIA
 9583      985         72         485   Sify Limited
24560      879        303         168   Bharti Airtel Ltd., Telemedia
 4808      844       1587         215   CNCGROUP IP network: China169
17908      844        193          55   Tata Communications

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

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     4006       3838         296   bellsouth.net, inc. 
 4323     3825       1099         398   Time Warner Telecom
 1785     1752        699         133   PaeTec Communications, Inc.
 7018     1559       5740         990   AT&T WorldNet Services
20115     1523       1500         658   Charter Communications 
 2386     1331        619         934   AT&T Data Communications Serv
 3356     1229      10960         430   Level 3 Communications, LLC 
 6478     1195        248         166   AT&T Worldnet Services 
11492     1150        222          14   Cable One 
22773     1141       2605          71   Cox Communications, Inc.

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

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
35805      614         56           6   United Telecom of Georgia
 3292      447       1899         389   TDC Tele Danmark
30890      434         99         202   Evolva Telecom
  702      421       1870         332   UUNET - Commercial IP service
 8551      401        356          37   Bezeq International
 8866      398        117          18   Bulgarian Telecommunication C
 3301      364       1413         319   TeliaNet Sweden
 3320      362       7072         315   Deutsche Telekom AG
 3215      348       3238         104   France Telecom Transpac
12479      329        576           5   Uni2 Autonomous System

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

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1542       2964         241   UniNet S.A. de C.V. 
10620     1035        239         157   TVCABLE BOGOTA 
28573      917        735          89   NET Servicos de Comunicao S.A
 7303      701        362         103   Telecom Argentina Stet-France
22047      545        310          15   VTR PUNTO NET S.A. 
 6503      540        171         211   AVANTEL, S.A. 
18881      536        268          11   Global Village Telecom 
 7738      477        922          30   Telecomunicacoes da Bahia S.A
 3816      458        195          70   Empresa Nacional de Telecomun
14117      453         30          13   Telefonica del Sur S.A. 

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

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8452      750        189           9   TEDATA
24863      712        144          41   LINKdotNET AS number
36992      545        112         161   Etisalat MISR
 3741      273        852         232   The Internet Solution 
33776      262         14          11   Starcomms Nigeria Limited
 2018      215        230         111   Tertiary Education Network 
 6713      176        167          12   Itissalat Al-MAGHRIB
29571      172         19           9   Ci Telecom Autonomous system 
24835      147         78          10   RAYA Telecom - Egypt
29975      133        506          14   Vodacom

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

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     4006       3838         296   bellsouth.net, inc. 
 4323     3825       1099         398   Time Warner Telecom
 4766     1843       8406         479   Korea Telecom (KIX)
 1785     1752        699         133   PaeTec Communications, Inc.
 7018     1559       5740         990   AT&T WorldNet Services
 8151     1542       2964         241   UniNet S.A. de C.V. 
20115     1523       1500         658   Charter Communications 
 2386     1331        619         934   AT&T Data Communications Serv
17488     1312        136         127   Hathway IP Over Cable Interne
 4755     1300        290         147   TATA Communications formerly 

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

Global Per AS Maximum Aggr summary
----------------------------------

  ASN   No of nets  Net Savings Description
 4323      3825        3427      Time Warner Telecom
 1785      1752        1619      PaeTec Communications, Inc.
 4766      1843        1364      Korea Telecom (KIX)
 8151      1542        1301      UniNet S.A. de C.V. 
17488      1312        1185      Hathway IP Over Cable Interne
 4755      1300        1153      TATA Communications formerly 
11492      1150        1136      Cable One 
22773      1141        1070      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 6478      1195        1029      AT&T Worldnet Services 

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

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

Bad AS  Designation  Network              Transit AS  Description
16927   UNALLOCATED  12.0.252.0/23         7018       AT&T WorldNet Servic
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.14.170.0/24        7018       AT&T WorldNet Servic
13746   UNALLOCATED  12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.25.107.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.152.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.154.0/23        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.155.0/24        7018       AT&T WorldNet Servic
26973   UNALLOCATED  12.39.159.0/24        7018       AT&T WorldNet Servic
25639   UNALLOCATED  12.41.169.0/24        7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
14.0.0.0/8           38639     NTT Communications Corporatio
41.190.64.0/22       28683     Office des Postes et telecomm
41.202.96.0/19       29571     Ci Telecom Autonomous system 
41.220.144.0/20      36918     ORASCOM TELECOM ALGERIE VSAT
41.220.159.0/24      36918     ORASCOM TELECOM ALGERIE VSAT
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
41.223.196.0/24      36990     Alkan Telecom Ltd

Complete listing at http://thyme.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        /8:21       /9:10      /10:25      /11:66      /12:191     
/13:392     /14:680     /15:1246    /16:11038   /17:5219    /18:8886    
/19:18277   /20:22438   /21:22449   /22:29284   /23:28907   /24:166443  
/25:986     /26:1227    /27:626     /28:140     /29:9       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2573          4006      bellsouth.net, inc. 
 4323     2340          3825      Time Warner Telecom
 4766     1479          1843      Korea Telecom (KIX)
 1785     1214          1752      PaeTec Communications, Inc.
17488     1063          1312      Hathway IP Over Cable Interne
11492     1061          1150      Cable One 
18566     1040          1059      Covad Communications 
10620      944          1035      TVCABLE BOGOTA 
 7018      936          1559      AT&T WorldNet Services
 7011      838          1114      Citizens Utilities 

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

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

   4:13        8:257      12:1999     13:10       15:23       16:3      
  17:8        20:25       24:1415     27:28       32:48       33:12     
  38:656      40:99       41:1872     44:3        46:1        47:25     
  52:6        55:6        56:2        57:24       58:710      59:561    
  60:433      61:1126     62:1008     63:1973     64:3833     65:2361   
  66:4179     67:1792     68:1052     69:2819     70:709      71:238    
  72:1857     73:2        74:2251     75:246      76:308      77:841    
  78:606      79:392      80:983      81:779      82:456      83:452    
  84:690      85:1035     86:378      87:698      88:327      89:1555   
  90:85       91:2718     92:459      93:1103     94:1388     95:584    
  96:235      97:305      98:549      99:26      109:453     110:301    
 111:472     112:246     113:267     114:388     115:615     116:1025   
 117:627     118:406     119:923     120:148     121:847     122:1415   
 123:862     124:1105    125:1281    128:208     129:204     130:160    
 131:560     132:246     133:17      134:196     135:44      136:223    
 137:167     138:253     139:94      140:480     141:136     142:374    
 143:383     144:471     145:52      146:428     147:169     148:585    
 149:286     150:152     151:172     152:274     153:170     154:2      
 155:328     156:187     157:324     158:107     159:366     160:315    
 161:178     162:269     163:169     164:400     165:529     166:511    
 167:405     168:802     169:158     170:734     171:50      172:1      
 173:643     174:652     175:71      178:46      180:403     181:9      
 182:33      183:247     184:34      186:355     187:295     188:1229   
 189:720     190:3634    192:5735    193:4661    194:3362    195:2794   
 196:1167    198:3555    199:3421    200:5303    201:1519    202:7928   
 203:8314    204:4056    205:2334    206:2522    207:3040    208:3935   
 209:3470    210:2509    211:1220    212:1700    213:1680    214:596    
 215:67      216:4579    217:1534    218:494     219:418     220:1104   
 221:382     222:316    

End of report




More information about the NANOG mailing list