Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Feb 26 12:54:48 CST 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 27 Feb, 2010

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

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

BGP routing table entries examined:                              312233
    Prefixes after maximum aggregation:                          144486
    Deaggregation factor:                                          2.16
    Unique aggregates announced to Internet:                     153304
Total ASes present in the Internet Routing Table:                 33408
    Prefixes per ASN:                                              9.35
Origin-only ASes present in the Internet Routing Table:           29005
Origin ASes announcing only one prefix:                           14141
Transit ASes present in the Internet Routing Table:                4403
Transit-only ASes present in the Internet Routing Table:            100
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      22
    Max AS path prepend of ASN (32374)                               19
Prefixes from unregistered ASNs in the Routing Table:               883
    Unregistered ASNs in the Routing Table:                         140
Number of 32-bit ASNs allocated by the RIRs:                        447
Prefixes from 32-bit ASNs in the Routing Table:                     433
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            235
Number of addresses announced to Internet:                   2208633792
    Equivalent to 131 /8s, 165 /16s and 19 /24s
    Percentage of available address space announced:               59.6
    Percentage of allocated address space announced:               66.2
    Percentage of available address space allocated:               90.0
    Percentage of address space in use by end-sites:               81.2
Total number of prefixes smaller than registry allocations:      150079

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

Prefixes being announced by APNIC Region ASes:                    75132
    Total APNIC prefixes after maximum aggregation:               25995
    APNIC Deaggregation factor:                                    2.89
Prefixes being announced from the APNIC address blocks:           71811
    Unique aggregates announced from the APNIC address blocks:    31790
APNIC Region origin ASes present in the Internet Routing Table:    3970
    APNIC Prefixes per ASN:                                       18.09
APNIC Region origin ASes announcing only one prefix:               1083
APNIC Region transit ASes present in the Internet Routing Table:    624
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              513310752
    Equivalent to 30 /8s, 152 /16s and 128 /24s
    Percentage of available APNIC address space announced:         80.5

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,  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,

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

Prefixes being announced by ARIN Region ASes:                    130267
    Total ARIN prefixes after maximum aggregation:                67799
    ARIN Deaggregation factor:                                     1.92
Prefixes being announced from the ARIN address blocks:           104360
    Unique aggregates announced from the ARIN address blocks:     39769
ARIN Region origin ASes present in the Internet Routing Table:    13524
    ARIN Prefixes per ASN:                                         7.72
ARIN Region origin ASes announcing only one prefix:                5222
ARIN Region transit ASes present in the Internet Routing Table:    1335
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               739540256
    Equivalent to 44 /8s, 20 /16s and 125 /24s
    Percentage of available ARIN address space announced:          63.0

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,  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:                     71976
    Total RIPE prefixes after maximum aggregation:                41904
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            64873
    Unique aggregates announced from the RIPE address blocks:     42898
RIPE Region origin ASes present in the Internet Routing Table:    14149
    RIPE Prefixes per ASN:                                         4.58
RIPE Region origin ASes announcing only one prefix:                7336
RIPE Region transit ASes present in the Internet Routing Table:    2120
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               415745152
    Equivalent to 24 /8s, 199 /16s and 196 /24s
    Percentage of available RIPE address space announced:          77.4

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:                   27561
    Total LACNIC prefixes after maximum aggregation:               6619
    LACNIC Deaggregation factor:                                   4.16
Prefixes being announced from the LACNIC address blocks:          25902
    Unique aggregates announced from the LACNIC address blocks:   14106
LACNIC Region origin ASes present in the Internet Routing Table:   1245
    LACNIC Prefixes per ASN:                                      20.80
LACNIC Region origin ASes announcing only one prefix:               406
LACNIC Region transit ASes present in the Internet Routing Table:   212
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        22
Number of LACNIC addresses announced to Internet:              71013376
    Equivalent to 4 /8s, 59 /16s and 148 /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  186/8, 187/8, 189/8, 190/8, 200/8, 201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   6643
    Total AfriNIC prefixes after maximum aggregation:              1772
    AfriNIC Deaggregation factor:                                  3.75
Prefixes being announced from the AfriNIC address blocks:          4981
    Unique aggregates announced from the AfriNIC address blocks:   1426
AfriNIC Region origin ASes present in the Internet Routing Table:   343
    AfriNIC Prefixes per ASN:                                     14.52
AfriNIC Region origin ASes announcing only one prefix:               94
AfriNIC Region transit ASes present in the Internet Routing Table:   73
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:             14811904
    Equivalent to 0 /8s, 226 /16s and 3 /24s
    Percentage of available AfriNIC address space announced:       44.1

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     1859       8533         477   Korea Telecom (KIX)
17488     1288        132         136   Hathway IP Over Cable Interne
 4755     1287        288         139   TATA Communications formerly 
18101     1083        221          39   Reliance Infocom Ltd Internet
 4134     1019      19606         398   CHINANET-BACKBONE
 9583      997         75         498   Sify Limited
 7545      953        199         100   TPG Internet Pty Ltd
17974      926        278          45   PT TELEKOMUNIKASI INDONESIA
 4808      852       1582         212   CNCGROUP IP network: China169
24560      850        300         167   Bharti Airtel Ltd., Telemedia

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     4066       3859         314   bellsouth.net, inc. 
 4323     3790       1084         394   Time Warner Telecom
 1785     1831        698         129   PaeTec Communications, Inc.
 7018     1561       5774        1007   AT&T WorldNet Services
20115     1553       1491         662   Charter Communications 
 2386     1316        617         928   AT&T Data Communications Serv
 3356     1204      10943         418   Level 3 Communications, LLC 
11492     1141        222          14   Cable One 
22773     1125       2602          69   Cox Communications, Inc.
 6478     1119        242         218   AT&T Worldnet Services 

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      581         40           5   United Telecom of Georgia
 3292      451       1900         392   TDC Tele Danmark
30890      450        101         205   Evolva Telecom
  702      424       1869         336   UUNET - Commercial IP service
 8551      396        353          37   Bezeq International
 8866      372        110          21   Bulgarian Telecommunication C
 3320      363       7072         317   Deutsche Telekom AG
 3301      352       1413         313   TeliaNet Sweden
 3215      347       3206         103   France Telecom Transpac
12479      326        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     1584       2893         235   UniNet S.A. de C.V. 
10620     1010        227         156   TVCABLE BOGOTA 
28573      908        698          84   NET Servicos de Comunicao S.A
 7303      677        359          99   Telecom Argentina Stet-France
22047      528        310          15   VTR PUNTO NET S.A. 
 6503      499        167         193   AVANTEL, S.A. 
 7738      476        922          30   Telecomunicacoes da Bahia S.A
11830      474        308          56   Instituto Costarricense de El
11172      446         99          70   Servicios Alestra S.A de C.V 
 3816      442        194          69   Empresa Nacional de Telecomun

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      994        445           9   TEDATA
24863      714        144          40   LINKdotNET AS number
36992      585        131         172   Etisalat MISR
 3741      273        855         234   The Internet Solution 
33776      258         13          11   Starcomms Nigeria Limited
 2018      210        215         121   Tertiary Education Network 
 6713      177        167          12   Itissalat Al-MAGHRIB
29571      169         19           9   Ci Telecom Autonomous system 
24835      133         78          11   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     4066       3859         314   bellsouth.net, inc. 
 4323     3790       1084         394   Time Warner Telecom
 4766     1859       8533         477   Korea Telecom (KIX)
 1785     1831        698         129   PaeTec Communications, Inc.
 8151     1584       2893         235   UniNet S.A. de C.V. 
 7018     1561       5774        1007   AT&T WorldNet Services
20115     1553       1491         662   Charter Communications 
 2386     1316        617         928   AT&T Data Communications Serv
17488     1288        132         136   Hathway IP Over Cable Interne
 4755     1287        288         139   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      3790        3396      Time Warner Telecom
 1785      1831        1702      PaeTec Communications, Inc.
 4766      1859        1382      Korea Telecom (KIX)
 8151      1584        1349      UniNet S.A. de C.V. 
17488      1288        1152      Hathway IP Over Cable Interne
 4755      1287        1148      TATA Communications formerly 
11492      1141        1127      Cable One 
22773      1125        1056      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
18101      1083        1044      Reliance Infocom Ltd Internet

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
2.0.0.0/16           12654     RIPE NCC RIS Project
2.1.0.0/21           12654     RIPE NCC RIS Project
2.1.24.0/24          12654     RIPE NCC RIS Project
2.2.2.0/24           12654     RIPE NCC RIS Project
41.77.236.0/22       23456     32-bit ASN transition
41.190.64.0/22       28683     Office des Postes et telecomm
41.190.66.0/24       37039     >>UNKNOWN<<
41.202.96.0/19       29571     Ci Telecom Autonomous system 
41.216.32.0/19       28683     Office des Postes et telecomm
41.220.144.0/20      36918     ORASCOM TELECOM ALGERIE VSAT

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      /11:65      /12:187     
/13:389     /14:659     /15:1233    /16:10946   /17:5164    /18:8734    
/19:18052   /20:21928   /21:22096   /22:28392   /23:28183   /24:163196  
/25:939     /26:1175    /27:580     /28:231     /29:13      /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2631          4066      bellsouth.net, inc. 
 4323     2353          3790      Time Warner Telecom
 4766     1472          1859      Korea Telecom (KIX)
 1785     1294          1831      PaeTec Communications, Inc.
11492     1056          1141      Cable One 
17488     1050          1288      Hathway IP Over Cable Interne
18566     1040          1059      Covad Communications 
18101      956          1083      Reliance Infocom Ltd Internet
 7018      939          1561      AT&T WorldNet Services
10620      916          1010      TVCABLE BOGOTA 

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

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

   2:2         4:14        8:239      12:1985     13:10       15:22     
  16:3        17:8        20:39       24:1349     27:1        32:48     
  38:642      40:99       41:2028     44:3        46:1        47:26     
  52:6        55:2        56:2        57:23       58:643      59:632    
  60:399      61:1096     62:1038     63:2014     64:3804     65:2348   
  66:4182     67:1781     68:1041     69:2843     70:694      71:236    
  72:1870     73:2        74:2128     75:241      76:333      77:819    
  78:587      79:396      80:999      81:778      82:449      83:434    
  84:642      85:1020     86:386      87:672      88:423      89:1526   
  90:76       91:2701     92:435      93:1144     94:1391     95:519    
  96:231      97:302      98:501      99:23      100:1       109:379    
 110:311     111:443     112:233     113:228     114:366     115:570    
 116:1028    117:624     118:386     119:916     120:138     121:842    
 122:1386    123:888     124:1069    125:1293    128:208     129:204    
 130:141     131:467     132:89      133:16      134:195     135:43     
 136:226     137:170     138:240     139:92      140:476     141:136    
 142:378     143:343     144:415     145:51      146:414     147:168    
 148:570     149:207     150:151     151:168     152:251     153:166    
 154:2       155:278     156:178     157:332     158:100     159:356    
 160:305     161:177     162:268     163:166     164:311     165:463    
 166:504     167:389     168:764     169:158     170:575     171:46     
 172:3       173:523     174:540     175:51      178:2       180:354    
 182:23      183:222     184:11      186:290     187:223     188:1359   
 189:687     190:3513    192:5712    193:4509    194:3357    195:2783   
 196:1169    198:3545    199:3378    200:5312    201:1462    202:8011   
 203:8275    204:4021    205:2170    206:2450    207:3006    208:3917   
 209:3449    210:2546    211:1196    212:1700    213:1655    214:268    
 215:57      216:4465    217:1513    218:487     219:427     220:1078   
 221:381     222:307    

End of report




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