[AusNOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Sat Jul 31 04:10:38 EST 2010


This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, AusNOG, SANOG, PacNOG, LacNOG,
CaribNOG and the RIPE Routing Working Group.

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 31 Jul, 2010

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

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

BGP routing table entries examined:                              327096
    Prefixes after maximum aggregation:                          150524
    Deaggregation factor:                                          2.17
    Unique aggregates announced to Internet:                     159810
Total ASes present in the Internet Routing Table:                 34482
    Prefixes per ASN:                                              9.49
Origin-only ASes present in the Internet Routing Table:           29935
Origin ASes announcing only one prefix:                           14512
Transit ASes present in the Internet Routing Table:                4547
Transit-only ASes present in the Internet Routing Table:            101
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      38
    Max AS path prepend of ASN (22394)                               35
Prefixes from unregistered ASNs in the Routing Table:               306
    Unregistered ASNs in the Routing Table:                         113
Number of 32-bit ASNs allocated by the RIRs:                        716
Prefixes from 32-bit ASNs in the Routing Table:                     874
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            165
Number of addresses announced to Internet:                   2281256256
    Equivalent to 135 /8s, 249 /16s and 53 /24s
    Percentage of available address space announced:               61.5
    Percentage of allocated address space announced:               66.4
    Percentage of available address space allocated:               92.8
    Percentage of address space in use by end-sites:               84.0
Total number of prefixes smaller than registry allocations:      155817

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

Prefixes being announced by APNIC Region ASes:                    79192
    Total APNIC prefixes after maximum aggregation:               27270
    APNIC Deaggregation factor:                                    2.90
Prefixes being announced from the APNIC address blocks:           76117
    Unique aggregates announced from the APNIC address blocks:    33644
APNIC Region origin ASes present in the Internet Routing Table:    4145
    APNIC Prefixes per ASN:                                       18.36
APNIC Region origin ASes announcing only one prefix:               1154
APNIC Region transit ASes present in the Internet Routing Table:    633
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         15
Number of APNIC addresses announced to Internet:              536013088
    Equivalent to 31 /8s, 242 /16s and 233 /24s
    Percentage of available APNIC address space announced:         79.9

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,  14/8,  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, 223/8,

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

Prefixes being announced by ARIN Region ASes:                    134849
    Total ARIN prefixes after maximum aggregation:                69675
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           107709
    Unique aggregates announced from the ARIN address blocks:     42178
ARIN Region origin ASes present in the Internet Routing Table:    13823
    ARIN Prefixes per ASN:                                         7.79
ARIN Region origin ASes announcing only one prefix:                5299
ARIN Region transit ASes present in the Internet Routing Table:    1367
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          38
Number of ARIN addresses announced to Internet:               730011936
    Equivalent to 43 /8s, 131 /16s and 25 /24s
    Percentage of available ARIN address space announced:          62.2

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:                     75230
    Total RIPE prefixes after maximum aggregation:                43549
    RIPE Deaggregation factor:                                     1.73
Prefixes being announced from the RIPE address blocks:            68351
    Unique aggregates announced from the RIPE address blocks:     44695
RIPE Region origin ASes present in the Internet Routing Table:    14643
    RIPE Prefixes per ASN:                                         4.67
RIPE Region origin ASes announcing only one prefix:                7534
RIPE Region transit ASes present in the Internet Routing Table:    2180
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               433696384
    Equivalent to 25 /8s, 217 /16s and 174 /24s
    Percentage of available RIPE address space announced:          76.0

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,  31/8,  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, 176/8, 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:                   29324
    Total LACNIC prefixes after maximum aggregation:               6984
    LACNIC Deaggregation factor:                                   4.20
Prefixes being announced from the LACNIC address blocks:          27836
    Unique aggregates announced from the LACNIC address blocks:   14618
LACNIC Region origin ASes present in the Internet Routing Table:   1317
    LACNIC Prefixes per ASN:                                      21.14
LACNIC Region origin ASes announcing only one prefix:               406
LACNIC Region transit ASes present in the Internet Routing Table:   232
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        26
Number of LACNIC addresses announced to Internet:              75899776
    Equivalent to 4 /8s, 134 /16s and 35 /24s
    Percentage of available LACNIC address space announced:        56.5

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  177/8, 181/8, 186/8, 187/8, 189/8, 190/8, 200/8,
                       201/8,

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

Prefixes being announced by AfriNIC Region ASes:                   7377
    Total AfriNIC prefixes after maximum aggregation:              1867
    AfriNIC Deaggregation factor:                                  3.95
Prefixes being announced from the AfriNIC address blocks:          5682
    Unique aggregates announced from the AfriNIC address blocks:   1606
AfriNIC Region origin ASes present in the Internet Routing Table:   384
    AfriNIC Prefixes per ASN:                                     14.80
AfriNIC Region origin ASes announcing only one prefix:              119
AfriNIC Region transit ASes present in the Internet Routing Table:   88
Average AfriNIC Region AS path length visible:                      3.7
    Max AfriNIC Region AS path length visible:                       14
Number of AfriNIC addresses announced to Internet:             19798016
    Equivalent to 1 /8s, 46 /16s and 24 /24s
    Percentage of available AfriNIC address space announced:       59.0

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     1856       8409         488   Korea Telecom (KIX)
 4755     1477        298         164   TATA Communications formerly 
 7545     1371        234          87   TPG Internet Pty Ltd
17488     1343        151         126   Hathway IP Over Cable Interne
17974     1186        287          60   PT TELEKOMUNIKASI INDONESIA
 9583     1003         74         486   Sify Limited
24560      994        305         183   Bharti Airtel Ltd., Telemedia
 4808      833       1582         225   CNCGROUP IP network: China169
 9829      817        686          33   BSNL National Internet Backbo
 4134      784      21996         412   CHINANET-BACKBONE

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     3881       3716         284   bellsouth.net, inc. 
 4323     2735       1116         397   Time Warner Telecom
19262     1947       4567         278   Verizon Global Networks 
 1785     1782        698         129   PaeTec Communications, Inc.
20115     1488       1522         653   Charter Communications 
 7018     1467       5733         953   AT&T WorldNet Services
 2386     1286        554         908   AT&T Data Communications Serv
 6478     1266        253         175   AT&T Worldnet Services 
22773     1174       2858          61   Cox Communications, Inc.
11492     1160        209          90   Cable One 

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      654         56           6   United Telecom of Georgia
 9198      499        202          13   Kazakhtelecom Data Network Ad
 3292      448       2026         389   TDC Tele Danmark
30890      444        111         206   Evolva Telecom
  702      412       1853         324   UUNET - Commercial IP service
 8866      403        117          18   Bulgarian Telecommunication C
 8551      401        353          46   Bezeq International
 3320      375       7329         327   Deutsche Telekom AG
 3301      372       1414         327   TeliaNet Sweden
34984      364         89         183   BILISIM TELEKOM

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     1523       3048         247   UniNet S.A. de C.V. 
10620     1072        240         149   TVCABLE BOGOTA 
28573     1028        818         100   NET Servicos de Comunicao S.A
 7303      775        396         104   Telecom Argentina Stet-France
 6503      719        178         222   AVANTEL, S.A. 
22047      555        310          15   VTR PUNTO NET S.A. 
14420      537         34          74   CORPORACION NACIONAL DE TELEC
 3816      494        210          90   Empresa Nacional de Telecomun
 7738      477        922          30   Telecomunicacoes da Bahia S.A
11172      448         99          76   Servicios Alestra S.A de C.V 

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     1177        445          10   TEDATA
24863      726        147          39   LINKdotNET AS number
36992      654        279         185   Etisalat MISR
 3741      270        898         232   The Internet Solution 
33776      220         12          12   Starcomms Nigeria Limited
 2018      213        277          64   Tertiary Education Network 
 6713      195        186          16   Itissalat Al-MAGHRIB
29571      191         19          10   Ci Telecom Autonomous system 
24835      189         78           9   RAYA Telecom - Egypt
16637      140        440          95   MTN Network Solutions

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     3881       3716         284   bellsouth.net, inc. 
 4323     2735       1116         397   Time Warner Telecom
19262     1947       4567         278   Verizon Global Networks 
 4766     1856       8409         488   Korea Telecom (KIX)
 1785     1782        698         129   PaeTec Communications, Inc.
 8151     1523       3048         247   UniNet S.A. de C.V. 
20115     1488       1522         653   Charter Communications 
 4755     1477        298         164   TATA Communications formerly 
 7018     1467       5733         953   AT&T WorldNet Services
 7545     1371        234          87   TPG Internet Pty Ltd

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

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

  ASN   No of nets  Net Savings Description
 4323      2735        2338      Time Warner Telecom
19262      1947        1669      Verizon Global Networks 
 1785      1782        1653      PaeTec Communications, Inc.
 4766      1856        1368      Korea Telecom (KIX)
 4755      1477        1313      TATA Communications formerly 
 7545      1371        1284      TPG Internet Pty Ltd
 8151      1523        1276      UniNet S.A. de C.V. 
17488      1343        1217      Hathway IP Over Cable Interne
 8452      1177        1167      TEDATA
17974      1186        1126      PT TELEKOMUNIKASI INDONESIA

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
24.38.240.0/21       33287     Comcast Cable Communications,
24.38.248.0/21       33287     Comcast Cable Communications,
31.0.0.0/16          12654     RIPE NCC RIS Project
31.1.0.0/21          12654     RIPE NCC RIS Project
31.1.24.0/24         12654     RIPE NCC RIS Project
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
41.223.188.0/24      22351     Intelsat 
41.223.189.0/24       6453     Teleglobe Inc. 
41.223.196.0/24      36990     Alkan Telecom Ltd

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      /11:67      /12:198     
/13:410     /14:709     /15:1296    /16:11182   /17:5376    /18:9196    
/19:18500   /20:23144   /21:23148   /22:30166   /23:29780   /24:170707  
/25:1051    /26:1192    /27:740     /28:118     /29:47      /30:6       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2485          3881      bellsouth.net, inc. 
 4766     1486          1856      Korea Telecom (KIX)
 4323     1398          2735      Time Warner Telecom
 1785     1244          1782      PaeTec Communications, Inc.
17488     1085          1343      Hathway IP Over Cable Interne
11492     1069          1160      Cable One 
18566     1069          1088      Covad Communications 
 8452     1066          1177      TEDATA
10620      988          1072      TVCABLE BOGOTA 
19262      913          1947      Verizon Global Networks 

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

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

   1:37        2:2         4:13        8:292      12:2016     13:7      
  14:1        15:21       16:3        17:8        20:6        24:1436   
  27:271      31:1        32:59       33:12       38:688      40:98     
  41:2487     44:3        46:17       47:16       52:9        55:6      
  56:2        57:28       58:770      59:508      60:462      61:1068   
  62:1038     63:1969     64:3713     65:2346     66:4052     67:1826   
  68:1096     69:2724     70:712      71:444      72:1944     73:2      
  74:2282     75:254      76:324      77:900      78:620      79:428    
  80:996      81:779      82:494      83:450      84:682      85:1043   
  86:466      87:686      88:332      89:1558     90:96       91:2896   
  92:507      93:1009     94:1410     95:666      96:529      97:210    
  98:618      99:33      100:1       108:105     109:587     110:434    
 111:515     112:273     113:314     114:434     115:573     116:1059   
 117:649     118:483     119:881     120:136     121:724     122:1517   
 123:950     124:1115    125:1304    128:226     129:163     130:196    
 131:558     132:247     133:16      134:196     135:45      136:240    
 137:135     138:267     139:104     140:480     141:197     142:340    
 143:370     144:469     145:52      146:446     147:170     148:673    
 149:299     150:153     151:228     152:297     153:168     154:2      
 155:356     156:160     157:324     158:110     159:360     160:315    
 161:182     162:255     163:173     164:410     165:366     166:460    
 167:413     168:645     169:157     170:716     171:59      172:2      
 173:959     174:505     175:161     176:1       178:329     180:478    
 182:163     183:242     184:122     186:529     187:409     188:1040   
 189:773     190:3861    192:5746    193:4719    194:3405    195:2818   
 196:1183    198:3571    199:3496    200:5355    201:1578    202:7963   
 203:8284    204:4042    205:2404    206:2506    207:3077    208:3874   
 209:3465    210:2549    211:1289    212:1714    213:1655    214:647    
 215:69      216:4729    217:1527    218:500     219:378     220:1143   
 221:399     222:313     223:2      

End of report



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