Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jan 29 12:45:25 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 <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 30 Jan, 2010

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

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

BGP routing table entries examined:                              310401
    Prefixes after maximum aggregation:                          143857
    Deaggregation factor:                                          2.16
    Unique aggregates announced to Internet:                     152150
Total ASes present in the Internet Routing Table:                 33195
    Prefixes per ASN:                                              9.35
Origin-only ASes present in the Internet Routing Table:           28813
Origin ASes announcing only one prefix:                           14071
Transit ASes present in the Internet Routing Table:                4382
Transit-only ASes present in the Internet Routing Table:            110
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      23
    Max AS path prepend of ASN ( 9503)                               21
Prefixes from unregistered ASNs in the Routing Table:               803
    Unregistered ASNs in the Routing Table:                         130
Number of 32-bit ASNs allocated by the RIRs:                        409
Prefixes from 32-bit ASNs in the Routing Table:                     367
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            208
Number of addresses announced to Internet:                   2182859712
    Equivalent to 130 /8s, 27 /16s and 203 /24s
    Percentage of available address space announced:               58.9
    Percentage of allocated address space announced:               66.1
    Percentage of available address space allocated:               89.1
    Percentage of address space in use by end-sites:               81.0
Total number of prefixes smaller than registry allocations:      149507

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

Prefixes being announced by APNIC Region ASes:                    74994
    Total APNIC prefixes after maximum aggregation:               25835
    APNIC Deaggregation factor:                                    2.90
Prefixes being announced from the APNIC address blocks:           71687
    Unique aggregates announced from the APNIC address blocks:    31510
APNIC Region origin ASes present in the Internet Routing Table:    3940
    APNIC Prefixes per ASN:                                       18.19
APNIC Region origin ASes announcing only one prefix:               1084
APNIC Region transit ASes present in the Internet Routing Table:    623
Average APNIC Region AS path length visible:                        3.6
    Max APNIC Region AS path length visible:                         23
Number of APNIC addresses announced to Internet:              490424864
    Equivalent to 29 /8s, 59 /16s and 74 /24s
    Percentage of available APNIC address space announced:         76.9

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:                    129648
    Total ARIN prefixes after maximum aggregation:                67654
    ARIN Deaggregation factor:                                     1.92
Prefixes being announced from the ARIN address blocks:           103715
    Unique aggregates announced from the ARIN address blocks:     39327
ARIN Region origin ASes present in the Internet Routing Table:    13468
    ARIN Prefixes per ASN:                                         7.70
ARIN Region origin ASes announcing only one prefix:                5204
ARIN Region transit ASes present in the Internet Routing Table:    1331
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               738182688
    Equivalent to 43 /8s, 255 /16s and 198 /24s
    Percentage of available ARIN address space announced:          64.7

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,  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:                     71527
    Total RIPE prefixes after maximum aggregation:                41622
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            64555
    Unique aggregates announced from the RIPE address blocks:     42965
RIPE Region origin ASes present in the Internet Routing Table:    14024
    RIPE Prefixes per ASN:                                         4.60
RIPE Region origin ASes announcing only one prefix:                7284
RIPE Region transit ASes present in the Internet Routing Table:    2103
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          21
Number of RIPE addresses announced to Internet:               415078528
    Equivalent to 24 /8s, 189 /16s and 152 /24s
    Percentage of available RIPE address space announced:          77.3

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:                   27325
    Total LACNIC prefixes after maximum aggregation:               6555
    LACNIC Deaggregation factor:                                   4.17
Prefixes being announced from the LACNIC address blocks:          25709
    Unique aggregates announced from the LACNIC address blocks:   13809
LACNIC Region origin ASes present in the Internet Routing Table:   1235
    LACNIC Prefixes per ASN:                                      20.82
LACNIC Region origin ASes announcing only one prefix:               404
LACNIC Region transit ASes present in the Internet Routing Table:   206
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        17
Number of LACNIC addresses announced to Internet:              70292480
    Equivalent to 4 /8s, 48 /16s and 148 /24s
    Percentage of available LACNIC address space announced:        69.8

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:                   6318
    Total AfriNIC prefixes after maximum aggregation:              1829
    AfriNIC Deaggregation factor:                                  3.45
Prefixes being announced from the AfriNIC address blocks:          4703
    Unique aggregates announced from the AfriNIC address blocks:   1396
AfriNIC Region origin ASes present in the Internet Routing Table:   338
    AfriNIC Prefixes per ASN:                                     13.91
AfriNIC Region origin ASes announcing only one prefix:               95
AfriNIC Region transit ASes present in the Internet Routing Table:   75
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       16
Number of AfriNIC addresses announced to Internet:             14851840
    Equivalent to 0 /8s, 226 /16s and 159 /24s
    Percentage of available AfriNIC address space announced:       44.3

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       7511         472   Korea Telecom (KIX)
 4755     1314        305         136   TATA Communications formerly 
17488     1273        131         138   Hathway IP Over Cable Interne
18101     1043        220          37   Reliance Infocom Ltd Internet
 4134     1018      19609         399   CHINANET-BACKBONE
 9583      983         71         489   Sify Limited
 7545      924        198          98   TPG Internet Pty Ltd
17974      886        277          43   PT TELEKOMUNIKASI INDONESIA
24560      840        299         173   Bharti Airtel Ltd., Telemedia
 4808      835       1583         212   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     4135       3875         317   bellsouth.net, inc. 
 4323     3794       1088         395   Time Warner Telecom
 1785     1851        699         132   PaeTec Communications, Inc.
 7018     1584       5777        1026   AT&T WorldNet Services
20115     1542       1490         671   Charter Communications 
 2386     1294        616         916   AT&T Data Communications Serv
 3356     1211      10931         423   Level 3 Communications, LLC 
11492     1141        222          14   Cable One 
22773     1125       2600          66   Cox Communications, Inc.
 6478     1106        240         254   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      562         40           5   United Telecom of Georgia
 3292      454       1904         396   TDC Tele Danmark
30890      447        100         207   Evolva Telecom
  702      422       1821         336   UUNET - Commercial IP service
 8551      397        353          37   Bezeq International
 8866      376        110          24   Bulgarian Telecommunication C
 3320      360       7069         309   Deutsche Telekom AG
 3301      350       1412         311   TeliaNet Sweden
 3215      345       3174         102   France Telecom Transpac
12479      321        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     1565       2885         236   UniNet S.A. de C.V. 
10620     1010        226         133   TVCABLE BOGOTA 
28573      849        677         100   NET Servicos de Comunicao S.A
 7303      672        356          99   Telecom Argentina Stet-France
22047      565        310          15   VTR PUNTO NET S.A. 
11830      472        308          59   Instituto Costarricense de El
 6503      446        163         185   AVANTEL, S.A. 
11172      444         99          69   Servicios Alestra S.A de C.V 
14117      439         29          12   Telefonica del Sur S.A. 
 3816      432        194          70   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      963        445           9   TEDATA
24863      719        144          39   LINKdotNET AS number
36992      475         87         245   Etisalat MISR
 3741      274        857         234   The Internet Solution 
 2018      190        197         109   Tertiary Education Network 
 6713      177        167          12   Itissalat Al-MAGHRIB
29571      167         19           9   Ci Telecom Autonomous system 
29975      134        506          15   Vodacom
33776      123          7          11   Starcomms Nigeria Limited
 5536      117          8           3   Internet Egypt Network

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     4135       3875         317   bellsouth.net, inc. 
 4323     3794       1088         395   Time Warner Telecom
 4766     1859       7511         472   Korea Telecom (KIX)
 1785     1851        699         132   PaeTec Communications, Inc.
 7018     1584       5777        1026   AT&T WorldNet Services
 8151     1565       2885         236   UniNet S.A. de C.V. 
20115     1542       1490         671   Charter Communications 
 4755     1314        305         136   TATA Communications formerly 
 2386     1294        616         916   AT&T Data Communications Serv
17488     1273        131         138   Hathway IP Over Cable Interne

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

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

  ASN   No of nets  Net Savings Description
 4323      3794        3399      Time Warner Telecom
 1785      1851        1719      PaeTec Communications, Inc.
 4766      1859        1387      Korea Telecom (KIX)
 8151      1565        1329      UniNet S.A. de C.V. 
 4755      1314        1178      TATA Communications formerly 
17488      1273        1135      Hathway IP Over Cable Interne
11492      1141        1127      Cable One 
22773      1125        1059      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
18101      1043        1006      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
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24      26452     Local Communications Networks
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
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 

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      /12:185     
/13:385     /14:659     /15:1246    /16:10883   /17:5108    /18:8696    
/19:17880   /20:21774   /21:21830   /22:28190   /23:28191   /24:162323  
/25:935     /26:1169    /27:586     /28:215     /29:9       /30:7       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2693          4135      bellsouth.net, inc. 
 4323     2362          3794      Time Warner Telecom
 4766     1477          1859      Korea Telecom (KIX)
 1785     1316          1851      PaeTec Communications, Inc.
11492     1061          1141      Cable One 
17488     1052          1273      Hathway IP Over Cable Interne
18566     1040          1059      Covad Communications 
 7018      953          1584      AT&T WorldNet Services
18101      922          1043      Reliance Infocom Ltd Internet
10620      915          1010      TVCABLE BOGOTA 

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

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

   1:2         2:1         4:13        8:234      12:2002     13:10     
  15:22       16:3        17:8        20:39       24:1302     27:1      
  32:49       38:646      40:99       41:1865     44:3        46:1      
  47:26       52:6        55:2        56:2        57:23       58:640    
  59:639      60:389      61:1099     62:1010     63:2034     64:3789   
  65:2364     66:4096     67:1800     68:1035     69:2841     70:689    
  71:236      72:1879     73:2        74:2086     75:242      76:351    
  77:823      78:577      79:411      80:958      81:782      82:457    
  83:439      84:636      85:1004     86:381      87:695      88:418    
  89:1537     90:65       91:2701     92:420      93:1172     94:1376   
  95:796      96:208      97:296      98:534      99:23      100:1      
 109:266     110:285     111:423     112:219     113:221     114:348    
 115:514     116:1036    117:609     118:372     119:805     120:144    
 121:828     122:1380    123:833     124:1075    125:1284    128:197    
 129:203     130:138     131:477     132:82      133:16      134:195    
 135:41      136:224     137:172     138:237     139:90      140:460    
 141:132     142:377     143:339     144:389     145:51      146:406    
 147:183     148:563     149:196     150:146     151:171     152:248    
 153:165     154:2       155:269     156:179     157:331     158:97     
 159:354     160:305     161:176     162:274     163:187     164:305    
 165:454     166:502     167:389     168:759     169:157     170:571    
 171:48      172:2       173:455     174:525     175:31      178:2      
 180:298     183:215     184:3       186:269     187:231     188:1288   
 189:634     190:3497    192:5720    193:4440    194:3346    195:2787   
 196:1170    198:3558    199:3396    200:5306    201:1466    202:8094   
 203:8324    204:4003    205:2178    206:2416    207:3043    208:3924   
 209:3421    210:2536    211:1170    212:1658    213:1640    214:253    
 215:62      216:4438    217:1498    218:483     219:448     220:1129   
 221:469     222:308    

End of report




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