Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jan 8 12:43:43 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 09 Jan, 2010

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

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

BGP routing table entries examined:                              307662
    Prefixes after maximum aggregation:                          143300
    Deaggregation factor:                                          2.15
    Unique aggregates announced to Internet:                     151565
Total ASes present in the Internet Routing Table:                 33037
    Prefixes per ASN:                                              9.31
Origin-only ASes present in the Internet Routing Table:           28698
Origin ASes announcing only one prefix:                           14013
Transit ASes present in the Internet Routing Table:                4339
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:                                      22
    Max AS path prepend of ASN ( 9503)                               20
Prefixes from unregistered ASNs in the Routing Table:               731
    Unregistered ASNs in the Routing Table:                         133
Number of 32-bit ASNs allocated by the RIRs:                        385
Prefixes from 32-bit ASNs in the Routing Table:                     335
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            186
Number of addresses announced to Internet:                   2169545344
    Equivalent to 129 /8s, 80 /16s and 162 /24s
    Percentage of available address space announced:               58.5
    Percentage of allocated address space announced:               66.3
    Percentage of available address space allocated:               88.2
    Percentage of address space in use by end-sites:               80.7
Total number of prefixes smaller than registry allocations:      148143

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

Prefixes being announced by APNIC Region ASes:                    73972
    Total APNIC prefixes after maximum aggregation:               25793
    APNIC Deaggregation factor:                                    2.87
Prefixes being announced from the APNIC address blocks:           70662
    Unique aggregates announced from the APNIC address blocks:    31402
APNIC Region origin ASes present in the Internet Routing Table:    3913
    APNIC Prefixes per ASN:                                       18.06
APNIC Region origin ASes announcing only one prefix:               1071
APNIC Region transit ASes present in the Internet Routing Table:    612
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         22
Number of APNIC addresses announced to Internet:              486803488
    Equivalent to 29 /8s, 4 /16s and 8 /24s
    Percentage of available APNIC address space announced:         80.6

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    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:                    129255
    Total ARIN prefixes after maximum aggregation:                67559
    ARIN Deaggregation factor:                                     1.91
Prefixes being announced from the ARIN address blocks:           103380
    Unique aggregates announced from the ARIN address blocks:     39158
ARIN Region origin ASes present in the Internet Routing Table:    13428
    ARIN Prefixes per ASN:                                         7.70
ARIN Region origin ASes announcing only one prefix:                5201
ARIN Region transit ASes present in the Internet Routing Table:    1323
Average ARIN Region AS path length visible:                         3.3
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               735019296
    Equivalent to 43 /8s, 207 /16s and 129 /24s
    Percentage of available ARIN address space announced:          64.4

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:                     70912
    Total RIPE prefixes after maximum aggregation:                41459
    RIPE Deaggregation factor:                                     1.71
Prefixes being announced from the RIPE address blocks:            64240
    Unique aggregates announced from the RIPE address blocks:     42763
RIPE Region origin ASes present in the Internet Routing Table:    13948
    RIPE Prefixes per ASN:                                         4.61
RIPE Region origin ASes announcing only one prefix:                7257
RIPE Region transit ASes present in the Internet Routing Table:    2088
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          20
Number of RIPE addresses announced to Internet:               409561344
    Equivalent to 24 /8s, 105 /16s and 105 /24s
    Percentage of available RIPE address space announced:          76.3

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:                   26966
    Total LACNIC prefixes after maximum aggregation:               6530
    LACNIC Deaggregation factor:                                   4.13
Prefixes being announced from the LACNIC address blocks:          25329
    Unique aggregates announced from the LACNIC address blocks:   13780
LACNIC Region origin ASes present in the Internet Routing Table:   1225
    LACNIC Prefixes per ASN:                                      20.68
LACNIC Region origin ASes announcing only one prefix:               391
LACNIC Region transit ASes present in the Internet Routing Table:   204
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        20
Number of LACNIC addresses announced to Internet:              69899712
    Equivalent to 4 /8s, 42 /16s and 149 /24s
    Percentage of available LACNIC address space announced:        69.4

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:                   5994
    Total AfriNIC prefixes after maximum aggregation:              1610
    AfriNIC Deaggregation factor:                                  3.72
Prefixes being announced from the AfriNIC address blocks:          4375
    Unique aggregates announced from the AfriNIC address blocks:   1592
AfriNIC Region origin ASes present in the Internet Routing Table:   337
    AfriNIC Prefixes per ASN:                                     12.98
AfriNIC Region origin ASes announcing only one prefix:               93
AfriNIC Region transit ASes present in the Internet Routing Table:   69
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       21
Number of AfriNIC addresses announced to Internet:             14742016
    Equivalent to 0 /8s, 224 /16s and 242 /24s
    Percentage of available AfriNIC address space announced:       43.9

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     1831       7509         473   Korea Telecom (KIX)
17488     1464        144         140   Hathway IP Over Cable Interne
 4755     1281        289         144   TATA Communications formerly 
18101     1033        220          38   Reliance Infocom Ltd Internet
 4134     1018      19477         400   CHINANET-BACKBONE
 9583      998         74         503   Sify Limited
 7545      920        198          98   TPG Internet Pty Ltd
17974      844        271          55   PT TELEKOMUNIKASI INDONESIA
 4808      836       1583         213   CNCGROUP IP network: China169
 9829      835        679          22   BSNL National Internet Backbo

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     4165       3891         301   bellsouth.net, inc. 
 4323     3783       1068         400   Time Warner Telecom
 1785     1796        699         134   PaeTec Communications, Inc.
 7018     1589       5791        1028   AT&T WorldNet Services
20115     1537       1487         666   Charter Communications 
 2386     1294        617         930   AT&T Data Communications Serv
 3356     1200      10929         423   Level 3 Communications, LLC 
11492     1154        222          14   Cable One 
22773     1124       2600          66   Cox Communications, Inc.
 6478     1092        241         298   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
30890      516         98         206   Evolva Telecom
35805      466         40           5   United Telecom of Georgia
 3292      448       1903         393   TDC Tele Danmark
 9198      426        202          13   Kazakhtelecom Data Network Ad
  702      419       1837         337   UUNET - Commercial IP service
 8551      396        353          37   Bezeq International
 8866      374        110          23   Bulgarian Telecommunication C
 3320      361       7068         307   Deutsche Telekom AG
 3301      352       1412         307   TeliaNet Sweden
 3215      350       3168         107   France Telecom Transpac

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     1576       2899         232   UniNet S.A. de C.V. 
10620     1004        224         130   TVCABLE BOGOTA 
28573      832        674          85   NET Servicos de Comunicao S.A
 7303      668        352          98   Telecom Argentina Stet-France
22047      546        302          14   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      436         29          11   Telefonica del Sur S.A. 
 3816      431        193          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     1017        444           8   TEDATA
24863      719        143          53   LINKdotNET AS number
 3741      273        857         233   The Internet Solution 
 2018      178        196         100   Tertiary Education Network 
 6713      177        167          12   Itissalat Al-MAGHRIB
29571      161         19           9   Ci Telecom Autonomous system 
29975      134        506          15   Vodacom
33776      123          7          11   Starcomms Nigeria Limited
 5536      121          8          18   Internet Egypt Network
 5713      114        505          68   Telkom SA Ltd 

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     4165       3891         301   bellsouth.net, inc. 
 4323     3783       1068         400   Time Warner Telecom
 4766     1831       7509         473   Korea Telecom (KIX)
 1785     1796        699         134   PaeTec Communications, Inc.
 7018     1589       5791        1028   AT&T WorldNet Services
 8151     1576       2899         232   UniNet S.A. de C.V. 
20115     1537       1487         666   Charter Communications 
17488     1464        144         140   Hathway IP Over Cable Interne
 2386     1294        617         930   AT&T Data Communications Serv
 4755     1281        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      3783        3383      Time Warner Telecom
 1785      1796        1662      PaeTec Communications, Inc.
 4766      1831        1358      Korea Telecom (KIX)
 8151      1576        1344      UniNet S.A. de C.V. 
17488      1464        1324      Hathway IP Over Cable Interne
11492      1154        1140      Cable One 
 4755      1281        1137      TATA Communications formerly 
22773      1124        1058      Cox Communications, Inc.
18566      1059        1049      Covad Communications 
 8452      1017        1009      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
41.78.60.0/22         6762     Telecom Italia international 
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

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      /12:181     
/13:382     /14:654     /15:1233    /16:10850   /17:5053    /18:8622    
/19:17725   /20:21661   /21:21549   /22:27892   /23:28054   /24:160791  
/25:915     /26:1147    /27:584     /28:221     /29:11      /30:8       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2723          4165      bellsouth.net, inc. 
 4323     2369          3783      Time Warner Telecom
 4766     1476          1831      Korea Telecom (KIX)
 1785     1263          1796      PaeTec Communications, Inc.
17488     1230          1464      Hathway IP Over Cable Interne
11492     1074          1154      Cable One 
18566     1040          1059      Covad Communications 
 7018      960          1589      AT&T WorldNet Services
 8452      913          1017      TEDATA
18101      913          1033      Reliance Infocom Ltd Internet

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

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

   2:1         4:13        8:242      12:2007     13:9        15:22     
  16:3        17:8        20:38       24:1301     32:49       38:635    
  40:99       41:1881     44:3        46:1        47:29       52:6      
  55:2        56:2        57:23       58:640      59:596      60:446    
  61:968      62:956      63:2005     64:3774     65:2358     66:4100   
  67:1841     68:1047     69:2832     70:688      71:231      72:1878   
  73:3        74:2075     75:225      76:359      77:871      78:604    
  79:406      80:961      81:803      82:469      83:440      84:521    
  85:1015     86:376      87:692      88:433      89:1561     90:65     
  91:2674     92:434      93:1151     94:1293     95:799      96:194    
  97:290      98:488      99:23      109:206     110:263     111:413    
 112:168     113:216     114:304     115:404     116:1126    117:596    
 118:380     119:812     120:141     121:684     122:1385    123:830    
 124:1029    125:1305    128:198     129:203     130:134     131:461    
 132:84      133:16      134:193     135:41      136:228     137:175    
 138:236     139:81      140:462     141:121     142:377     143:349    
 144:393     145:51      146:390     147:175     148:565     149:196    
 150:151     151:172     152:225     153:162     154:2       155:270    
 156:178     157:329     158:98      159:355     160:304     161:175    
 162:271     163:189     164:309     165:472     166:493     167:387    
 168:758     169:158     170:568     171:42      172:1       173:425    
 174:519     175:20      180:273     183:200     184:3       186:258    
 187:211     188:1138    189:615     190:3423    192:5722    193:4390   
 194:3352    195:2786    196:1192    198:3550    199:3390    200:5256   
 201:1450    202:8076    203:8300    204:3981    205:2167    206:2401   
 207:3042    208:3924    209:3394    210:2518    211:1170    212:1657   
 213:1650    214:248     215:58      216:4425    217:1390    218:481    
 219:416     220:1137    221:461     222:303    

End of report




More information about the NANOG mailing list