Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 23 13:31:51 CDT 2009


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 <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 24 Oct, 2009

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

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

BGP routing table entries examined:                              301090
    Prefixes after maximum aggregation:                          141242
    Deaggregation factor:                                          2.13
    Unique aggregates announced to Internet:                     149275
Total ASes present in the Internet Routing Table:                 32521
    Prefixes per ASN:                                              9.26
Origin-only ASes present in the Internet Routing Table:           28255
Origin ASes announcing only one prefix:                           13771
Transit ASes present in the Internet Routing Table:                4266
Transit-only ASes present in the Internet Routing Table:            105
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      30
    Max AS path prepend of ASN (12026)                               22
Prefixes from unregistered ASNs in the Routing Table:               604
    Unregistered ASNs in the Routing Table:                         123
Number of 32-bit ASNs allocated by the RIRs:                        300
Prefixes from 32-bit ASNs in the Routing Table:                     242
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            189
Number of addresses announced to Internet:                   2116891488
    Equivalent to 126 /8s, 45 /16s and 51 /24s
    Percentage of available address space announced:               57.1
    Percentage of allocated address space announced:               64.7
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               79.4
Total number of prefixes smaller than registry allocations:      144872

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

Prefixes being announced by APNIC Region ASes:                    72260
    Total APNIC prefixes after maximum aggregation:               25358
    APNIC Deaggregation factor:                                    2.85
Prefixes being announced from the APNIC address blocks:           68831
    Unique aggregates announced from the APNIC address blocks:    30562
APNIC Region origin ASes present in the Internet Routing Table:    3842
    APNIC Prefixes per ASN:                                       17.92
APNIC Region origin ASes announcing only one prefix:               1047
APNIC Region transit ASes present in the Internet Routing Table:    589
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         14
Number of APNIC addresses announced to Internet:              462803232
    Equivalent to 27 /8s, 149 /16s and 209 /24s
    Percentage of available APNIC address space announced:         78.8

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    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, 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:                    127136
    Total ARIN prefixes after maximum aggregation:                67099
    ARIN Deaggregation factor:                                     1.89
Prefixes being announced from the ARIN address blocks:           101658
    Unique aggregates announced from the ARIN address blocks:     38678
ARIN Region origin ASes present in the Internet Routing Table:    13315
    ARIN Prefixes per ASN:                                         7.63
ARIN Region origin ASes announcing only one prefix:                5144
ARIN Region transit ASes present in the Internet Routing Table:    1313
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          24
Number of ARIN addresses announced to Internet:               708690432
    Equivalent to 42 /8s, 61 /16s and 194 /24s
    Percentage of available ARIN address space announced:          62.1

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,  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,  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, 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:                     69365
    Total RIPE prefixes after maximum aggregation:                40565
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            62853
    Unique aggregates announced from the RIPE address blocks:     42173
RIPE Region origin ASes present in the Internet Routing Table:    13646
    RIPE Prefixes per ASN:                                         4.61
RIPE Region origin ASes announcing only one prefix:                7107
RIPE Region transit ASes present in the Internet Routing Table:    2053
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               402504512
    Equivalent to 23 /8s, 253 /16s and 187 /24s
    Percentage of available RIPE address space announced:          75.0

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, 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:                   25911
    Total LACNIC prefixes after maximum aggregation:               6365
    LACNIC Deaggregation factor:                                   4.07
Prefixes being announced from the LACNIC address blocks:          24217
    Unique aggregates announced from the LACNIC address blocks:   13306
LACNIC Region origin ASes present in the Internet Routing Table:   1195
    LACNIC Prefixes per ASN:                                      20.27
LACNIC Region origin ASes announcing only one prefix:               375
LACNIC Region transit ASes present in the Internet Routing Table:   196
Average LACNIC Region AS path length visible:                       4.1
    Max LACNIC Region AS path length visible:                        30
Number of LACNIC addresses announced to Internet:              67503616
    Equivalent to 4 /8s, 6 /16s and 6 /24s
    Percentage of available LACNIC address space announced:        67.1

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:                   5949
    Total AfriNIC prefixes after maximum aggregation:              1574
    AfriNIC Deaggregation factor:                                  3.78
Prefixes being announced from the AfriNIC address blocks:          4309
    Unique aggregates announced from the AfriNIC address blocks:   1581
AfriNIC Region origin ASes present in the Internet Routing Table:   331
    AfriNIC Prefixes per ASN:                                     13.02
AfriNIC Region origin ASes announcing only one prefix:               98
AfriNIC Region transit ASes present in the Internet Routing Table:   68
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       15
Number of AfriNIC addresses announced to Internet:             12602112
    Equivalent to 0 /8s, 192 /16s and 75 /24s
    Percentage of available AfriNIC address space announced:       37.6

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     1763       6991         454   Korea Telecom (KIX)
17488     1470        138         142   Hathway IP Over Cable Interne
 4755     1266        292         145   TATA Communications formerly 
 9583     1103         87         532   Sify Limited
 4134     1005      18177         392   CHINANET-BACKBONE
18101      980        204          32   Reliance Infocom Ltd Internet
 7545      901        199         101   TPG Internet Pty Ltd
 9829      849        661          20   BSNL National Internet Backbo
17974      797        249          94   PT TELEKOMUNIKASI INDONESIA
24560      781        290         164   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     4164       3882         312   bellsouth.net, inc. 
 4323     3711       1037         384   Time Warner Telecom
 1785     1776        714         139   PaeTec Communications, Inc.
 7018     1574       5844        1059   AT&T WorldNet Services
20115     1488       1481         670   Charter Communications 
 6478     1347        275         437   AT&T Worldnet Services 
 2386     1306        637         945   AT&T Data Communications Serv
 3356     1224      10964         439   Level 3 Communications, LLC 
11492     1134        206          13   Cable One 
22773     1113       2604          67   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
30890      514         94         208   Evolva Telecom
35805      465         40           5   United Telecom of Georgia
 3292      451       1908         394   TDC Tele Danmark
  702      415       1822         334   UUNET - Commercial IP service
 9198      387        138          12   Kazakhtelecom Data Network Ad
 8866      360        110          23   Bulgarian Telecommunication C
 3320      356       7068         304   Deutsche Telekom AG
 3301      350       1428         307   TeliaNet Sweden
 3215      349       3144         111   France Telecom Transpac
 8551      316        294          40   Bezeq International

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     1520       2899         237   UniNet S.A. de C.V. 
10620     1020        227         100   TVCABLE BOGOTA 
28573      779        652          90   NET Servicos de Comunicao S.A
 7303      658        347          98   Telecom Argentina Stet-France
22047      545        302          14   VTR PUNTO NET S.A. 
11830      475        310          61   Instituto Costarricense de El
11172      443         99          71   Servicios Alestra S.A de C.V 
14117      438         29          11   Telefonica del Sur S.A. 
 7738      428        858          29   Telecomunicacoes da Bahia S.A
 6471      421         96          31   ENTEL CHILE 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      990        188           7   TEDATA
24863      874         96          73   LINKdotNET AS number
 3741      272        856         233   The Internet Solution 
 2018      195        188         118   Tertiary Education Network 
 6713      176        167          12   Itissalat Al-MAGHRIB
29571      142         14           6   Ci Telecom Autonomous system 
33776      124          7          11   Starcomms Nigeria Limited
 5536      121          8          18   Internet Egypt Network
 5713      116        508          67   Telkom SA Ltd 
20858      109         34           6   EgyNet

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     4164       3882         312   bellsouth.net, inc. 
 4323     3711       1037         384   Time Warner Telecom
 1785     1776        714         139   PaeTec Communications, Inc.
 4766     1763       6991         454   Korea Telecom (KIX)
 7018     1574       5844        1059   AT&T WorldNet Services
 8151     1520       2899         237   UniNet S.A. de C.V. 
20115     1488       1481         670   Charter Communications 
17488     1470        138         142   Hathway IP Over Cable Interne
 6478     1347        275         437   AT&T Worldnet Services 
 2386     1306        637         945   AT&T Data Communications Serv

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

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

  ASN   No of nets  Net Savings Description
 4323      3711        3327      Time Warner Telecom
 1785      1776        1637      PaeTec Communications, Inc.
17488      1470        1328      Hathway IP Over Cable Interne
 4766      1763        1309      Korea Telecom (KIX)
 8151      1520        1283      UniNet S.A. de C.V. 
 4755      1266        1121      TATA Communications formerly 
11492      1134        1121      Cable One 
18566      1062        1052      Covad Communications 
22773      1113        1046      Cox Communications, Inc.
 8452       990         983      TEDATA

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   12.39.159.0/24        7018       AT&T WorldNet Servic
32326   UNALLOCATED   12.40.49.0/24         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
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
43.245.0.0/16         7502     Internetwork Kyoto
46.0.0.0/16          12654     RIPE NCC RIS Project
46.1.0.0/21          12654     RIPE NCC RIS Project
46.1.24.0/24         12654     RIPE NCC RIS Project

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        /8:20       /9:10      /10:24      /11:63      /12:177     
/13:355     /14:629     /15:1210    /16:10692   /17:4886    /18:8472    
/19:17517   /20:21113   /21:21075   /22:27386   /23:26945   /24:157743  
/25:926     /26:1113    /27:557     /28:154     /29:8       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2691          4164      bellsouth.net, inc. 
 4323     2350          3711      Time Warner Telecom
 4766     1436          1763      Korea Telecom (KIX)
 1785     1241          1776      PaeTec Communications, Inc.
17488     1231          1470      Hathway IP Over Cable Interne
11492     1058          1134      Cable One 
18566     1043          1062      Covad Communications 
 9583      955          1103      Sify Limited
 7018      932          1574      AT&T WorldNet Services
10620      926          1020      TVCABLE BOGOTA 

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

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

   2:1         4:14        8:225      12:2147     13:7        15:22     
  16:3        17:5        20:36       24:1199     32:52       34:2      
  38:605      40:97       41:1767     43:1        44:2        46:1      
  47:21       52:6        55:2        56:2        57:25       58:607    
  59:640      60:441      61:1088     62:973      63:2005     64:3661   
  65:2374     66:4090     67:1758     68:984      69:2761     70:572    
  71:154      72:1725     73:2        74:1989     75:183      76:357    
  77:866      78:566      79:390      80:913      81:814      82:479    
  83:436      84:533      85:1006     86:372      87:692      88:422    
  89:1517     90:53       91:2616     92:417      93:1279     94:1317   
  95:1145     96:190      97:271      98:371      99:30      109:86     
 110:246     111:456     112:142     113:155     114:274     115:446    
 116:1096    117:592     118:358     119:790     120:132     121:797    
 122:1293    123:778     124:1043    125:1373    128:219     129:220    
 130:130     131:421     132:76      133:10      134:186     135:42     
 136:224     137:171     138:174     139:82      140:440     141:123    
 142:385     143:348     144:365     145:49      146:391     147:170    
 148:551     149:202     150:151     151:176     152:212     153:158    
 154:2       155:273     156:168     157:310     158:91      159:358    
 160:292     161:171     162:279     163:171     164:278     165:467    
 166:478     167:391     168:754     169:163     170:466     171:42     
 172:2       173:386     174:382     175:1       178:1       180:96     
 182:1       186:148     187:167     188:1179    189:610     190:3168   
 192:5745    193:4270    194:3326    195:2736    196:1170    198:3551   
 199:3352    200:5202    201:1360    202:7891    203:8237    204:3915   
 205:2180    206:2400    207:2987    208:3972    209:3456    210:2570   
 211:1142    212:1603    213:1619    214:172     215:39      216:4425   
 217:1335    218:415     219:456     220:1135    221:449     222:304    


End of report




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