Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Apr 2 14:14:48 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 03 Apr, 2010

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

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

BGP routing table entries examined:                              316610
    Prefixes after maximum aggregation:                          146298
    Deaggregation factor:                                          2.16
    Unique aggregates announced to Internet:                     154026
Total ASes present in the Internet Routing Table:                 33705
    Prefixes per ASN:                                              9.39
Origin-only ASes present in the Internet Routing Table:           29263
Origin ASes announcing only one prefix:                           14300
Transit ASes present in the Internet Routing Table:                4442
Transit-only ASes present in the Internet Routing Table:            102
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:              1001
    Unregistered ASNs in the Routing Table:                         155
Number of 32-bit ASNs allocated by the RIRs:                        506
Prefixes from 32-bit ASNs in the Routing Table:                     522
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            231
Number of addresses announced to Internet:                   2193892480
    Equivalent to 130 /8s, 196 /16s and 36 /24s
    Percentage of available address space announced:               59.2
    Percentage of allocated address space announced:               65.7
    Percentage of available address space allocated:               90.0
    Percentage of address space in use by end-sites:               82.0
Total number of prefixes smaller than registry allocations:      151724

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

Prefixes being announced by APNIC Region ASes:                    75943
    Total APNIC prefixes after maximum aggregation:               26376
    APNIC Deaggregation factor:                                    2.88
Prefixes being announced from the APNIC address blocks:           72600
    Unique aggregates announced from the APNIC address blocks:    31920
APNIC Region origin ASes present in the Internet Routing Table:    3990
    APNIC Prefixes per ASN:                                       18.20
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:                         15
Number of APNIC addresses announced to Internet:              507205440
    Equivalent to 30 /8s, 59 /16s and 87 /24s
    Percentage of available APNIC address space announced:         79.6

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:                    132528
    Total ARIN prefixes after maximum aggregation:                68590
    ARIN Deaggregation factor:                                     1.93
Prefixes being announced from the ARIN address blocks:           105688
    Unique aggregates announced from the ARIN address blocks:     40308
ARIN Region origin ASes present in the Internet Routing Table:    13615
    ARIN Prefixes per ASN:                                         7.76
ARIN Region origin ASes announcing only one prefix:                5276
ARIN Region transit ASes present in the Internet Routing Table:    1352
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               724817568
    Equivalent to 43 /8s, 51 /16s and 214 /24s
    Percentage of available ARIN address space announced:          61.7

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:                     72685
    Total RIPE prefixes after maximum aggregation:                42455
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            65723
    Unique aggregates announced from the RIPE address blocks:     43244
RIPE Region origin ASes present in the Internet Routing Table:    14309
    RIPE Prefixes per ASN:                                         4.59
RIPE Region origin ASes announcing only one prefix:                7407
RIPE Region transit ASes present in the Internet Routing Table:    2131
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               420675232
    Equivalent to 25 /8s, 18 /16s and 254 /24s
    Percentage of available RIPE address space announced:          78.4

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:                   28065
    Total LACNIC prefixes after maximum aggregation:               6638
    LACNIC Deaggregation factor:                                   4.23
Prefixes being announced from the LACNIC address blocks:          26411
    Unique aggregates announced from the LACNIC address blocks:   13676
LACNIC Region origin ASes present in the Internet Routing Table:   1259
    LACNIC Prefixes per ASN:                                      20.98
LACNIC Region origin ASes announcing only one prefix:               418
LACNIC Region transit ASes present in the Internet Routing Table:   218
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        24
Number of LACNIC addresses announced to Internet:              71874816
    Equivalent to 4 /8s, 72 /16s and 185 /24s
    Percentage of available LACNIC address space announced:        71.4

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:                   6641
    Total AfriNIC prefixes after maximum aggregation:              1789
    AfriNIC Deaggregation factor:                                  3.71
Prefixes being announced from the AfriNIC address blocks:          4968
    Unique aggregates announced from the AfriNIC address blocks:   1497
AfriNIC Region origin ASes present in the Internet Routing Table:   353
    AfriNIC Prefixes per ASN:                                     14.07
AfriNIC Region origin ASes announcing only one prefix:              101
AfriNIC Region transit ASes present in the Internet Routing Table:   77
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             14979584
    Equivalent to 0 /8s, 228 /16s and 146 /24s
    Percentage of available AfriNIC address space announced:       44.6

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     1837       8405         477   Korea Telecom (KIX)
17488     1307        134         130   Hathway IP Over Cable Interne
 4755     1298        289         144   TATA Communications formerly 
 7545     1078        200         101   TPG Internet Pty Ltd
 4134     1027      20317         397   CHINANET-BACKBONE
 9583      996         74         498   Sify Limited
17974      982        281          17   PT TELEKOMUNIKASI INDONESIA
18101      879        433          32   Reliance Infocom Ltd Internet
24560      874        303         168   Bharti Airtel Ltd., Telemedia
 4808      843       1584         213   CNCGROUP IP network: China169

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     4052       3842         310   bellsouth.net, inc. 
 4323     3827       1099         398   Time Warner Telecom
 1785     1751        699         132   PaeTec Communications, Inc.
 7018     1568       5757         998   AT&T WorldNet Services
20115     1528       1502         657   Charter Communications 
 2386     1326        618         936   AT&T Data Communications Serv
 3356     1228      10952         423   Level 3 Communications, LLC 
 6478     1179        247         163   AT&T Worldnet Services 
11492     1145        222          14   Cable One 
22773     1139       2604          70   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      612         56           6   United Telecom of Georgia
 3292      448       1899         390   TDC Tele Danmark
30890      437        100         202   Evolva Telecom
  702      421       1870         333   UUNET - Commercial IP service
 8551      400        355          36   Bezeq International
 8866      396        117          18   Bulgarian Telecommunication C
 3320      363       7072         317   Deutsche Telekom AG
 3301      356       1413         317   TeliaNet Sweden
 3215      347       3206         103   France Telecom Transpac
12479      330        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     1537       2908         238   UniNet S.A. de C.V. 
10620     1027        229         161   TVCABLE BOGOTA 
28573      899        731          84   NET Servicos de Comunicao S.A
 7303      700        367         101   Telecom Argentina Stet-France
22047      541        310          15   VTR PUNTO NET S.A. 
18881      522        268          11   Global Village Telecom 
 6503      510        168         193   AVANTEL, S.A. 
 7738      477        922          30   Telecomunicacoes da Bahia S.A
 3816      456        195          70   Empresa Nacional de Telecomun
14117      455         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      890        445          10   TEDATA
24863      704        144          41   LINKdotNET AS number
36992      552        120         162   Etisalat MISR
 3741      274        853         233   The Internet Solution 
33776      262         14          11   Starcomms Nigeria Limited
 2018      215        230         111   Tertiary Education Network 
 6713      177        167          12   Itissalat Al-MAGHRIB
29571      171         19           9   Ci Telecom Autonomous system 
24835      138         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     4052       3842         310   bellsouth.net, inc. 
 4323     3827       1099         398   Time Warner Telecom
 4766     1837       8405         477   Korea Telecom (KIX)
 1785     1751        699         132   PaeTec Communications, Inc.
 7018     1568       5757         998   AT&T WorldNet Services
 8151     1537       2908         238   UniNet S.A. de C.V. 
20115     1528       1502         657   Charter Communications 
 2386     1326        618         936   AT&T Data Communications Serv
17488     1307        134         130   Hathway IP Over Cable Interne
 4755     1298        289         144   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      3827        3429      Time Warner Telecom
 1785      1751        1619      PaeTec Communications, Inc.
 4766      1837        1360      Korea Telecom (KIX)
 8151      1537        1299      UniNet S.A. de C.V. 
17488      1307        1177      Hathway IP Over Cable Interne
 4755      1298        1154      TATA Communications formerly 
11492      1145        1131      Cable One 
22773      1139        1069      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 6478      1179        1016      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
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
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<<
41.223.24.0/22       25747     VSC Satellite Co 
41.223.92.0/22       36936     >>UNKNOWN<<

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        /8:19       /9:10      /10:25      /11:66      /12:192     
/13:391     /14:678     /15:1244    /16:11007   /17:5201    /18:8834    
/19:18242   /20:22291   /21:22337   /22:29026   /23:28774   /24:165365  
/25:948     /26:1197    /27:606     /28:133     /29:9       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2616          4052      bellsouth.net, inc. 
 4323     2348          3827      Time Warner Telecom
 4766     1475          1837      Korea Telecom (KIX)
 1785     1213          1751      PaeTec Communications, Inc.
17488     1061          1307      Hathway IP Over Cable Interne
11492     1056          1145      Cable One 
18566     1040          1059      Covad Communications 
 7018      942          1568      AT&T WorldNet Services
10620      933          1027      TVCABLE BOGOTA 
 9583      848           996      Sify Limited

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

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

   2:1         4:13        8:254      12:2003     13:10       15:23     
  16:3        17:8        20:26       24:1381     27:22       32:48     
  33:12       38:658      40:100      41:1963     44:3        46:1      
  47:26       52:6        55:6        56:2        57:24       58:675    
  59:578      60:431      61:1097     62:1036     63:1970     64:3818   
  65:2361     66:4167     67:1815     68:1044     69:2801     70:696    
  71:238      72:1860     73:2        74:2150     75:244      76:314    
  77:839      78:600      79:417      80:991      81:777      82:454    
  83:452      84:690      85:1042     86:385      87:682      88:351    
  89:1551     90:82       91:2709     92:443      93:1099     94:1392   
  95:550      96:234      97:298      98:526      99:26      109:441    
 110:296     111:469     112:244     113:256     114:386     115:605    
 116:1029    117:626     118:415     119:959     120:147     121:854    
 122:1388    123:868     124:1070    125:1293    128:207     129:203    
 130:160     131:558     132:250     133:17      134:197     135:44     
 136:223     137:171     138:257     139:94      140:478     141:136    
 142:374     143:357     144:428     145:52      146:424     147:167    
 148:584     149:227     150:150     151:168     152:260     153:169    
 154:2       155:326     156:182     157:324     158:102     159:359    
 160:315     161:177     162:268     163:168     164:410     165:522    
 166:505     167:401     168:797     169:157     170:736     171:48     
 172:2       173:608     174:620     175:61      178:42      180:363    
 182:25      183:241     184:28      186:344     187:266     188:1220   
 189:715     190:3606    192:5719    193:4628    194:3358    195:2782   
 196:1168    198:3545    199:3387    200:5280    201:1481    202:7917   
 203:8283    204:4071    205:2291    206:2520    207:3017    208:3889   
 209:3446    210:2524    211:1217    212:1714    213:1683    214:587    
 215:72      216:4471    217:1505    218:482     219:424     220:1089   
 221:381     222:313    

End of report




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