Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Nov 26 13:40:29 CST 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.rand.apnic.net.

If you have any comments please contact Philip Smith <pfs at cisco.com>.

Routing Table Report   04:00 +10GMT Sat 27 Nov, 2010

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

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

BGP routing table entries examined:                              336618
    Prefixes after maximum aggregation:                          152156
    Deaggregation factor:                                          2.21
    Unique aggregates announced to Internet:                     165085
Total ASes present in the Internet Routing Table:                 35344
    Prefixes per ASN:                                              9.52
Origin-only ASes present in the Internet Routing Table:           30444
Origin ASes announcing only one prefix:                           14895
Transit ASes present in the Internet Routing Table:                4900
Transit-only ASes present in the Internet Routing Table:            121
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      31
    Max AS path prepend of ASN (36992)                               29
Prefixes from unregistered ASNs in the Routing Table:               494
    Unregistered ASNs in the Routing Table:                         223
Number of 32-bit ASNs allocated by the RIRs:                        921
Prefixes from 32-bit ASNs in the Routing Table:                       4
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            188
Number of addresses announced to Internet:                   2311338848
    Equivalent to 137 /8s, 196 /16s and 59 /24s
    Percentage of available address space announced:               62.4
    Percentage of allocated address space announced:               65.6
    Percentage of available address space allocated:               95.0
    Percentage of address space in use by end-sites:               86.2
Total number of prefixes smaller than registry allocations:      138184

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

Prefixes being announced by APNIC Region ASes:                    83261
    Total APNIC prefixes after maximum aggregation:               28210
    APNIC Deaggregation factor:                                    2.95
Prefixes being announced from the APNIC address blocks:           80180
    Unique aggregates announced from the APNIC address blocks:    34447
APNIC Region origin ASes present in the Internet Routing Table:    4251
    APNIC Prefixes per ASN:                                       18.86
APNIC Region origin ASes announcing only one prefix:               1194
APNIC Region transit ASes present in the Internet Routing Table:    690
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         18
Number of APNIC addresses announced to Internet:              571809824
    Equivalent to 34 /8s, 21 /16s and 32 /24s
    Percentage of available APNIC address space announced:         77.5

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,  36/8,  42/8,  43/8,  49/8,
                        58/8,  59/8,  60/8,  61/8, 101/8, 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:                    136335
    Total ARIN prefixes after maximum aggregation:                69801
    ARIN Deaggregation factor:                                     1.95
Prefixes being announced from the ARIN address blocks:           107499
    Unique aggregates announced from the ARIN address blocks:     43805
ARIN Region origin ASes present in the Internet Routing Table:    14036
    ARIN Prefixes per ASN:                                         7.66
ARIN Region origin ASes announcing only one prefix:                5381
ARIN Region transit ASes present in the Internet Routing Table:    1487
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          23
Number of ARIN addresses announced to Internet:               741285376
    Equivalent to 44 /8s, 47 /16s and 30 /24s
    Percentage of available ARIN address space announced:          64.0

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,  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:                     78369
    Total RIPE prefixes after maximum aggregation:                45055
    RIPE Deaggregation factor:                                     1.74
Prefixes being announced from the RIPE address blocks:            71927
    Unique aggregates announced from the RIPE address blocks:     46615
RIPE Region origin ASes present in the Internet Routing Table:    15053
    RIPE Prefixes per ASN:                                         4.78
RIPE Region origin ASes announcing only one prefix:                7742
RIPE Region transit ASes present in the Internet Routing Table:    2334
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          30
Number of RIPE addresses announced to Internet:               446006976
    Equivalent to 26 /8s, 149 /16s and 134 /24s
    Percentage of available RIPE address space announced:          78.2

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:                   30746
    Total LACNIC prefixes after maximum aggregation:               7098
    LACNIC Deaggregation factor:                                   4.33
Prefixes being announced from the LACNIC address blocks:          29454
    Unique aggregates announced from the LACNIC address blocks:   15267
LACNIC Region origin ASes present in the Internet Routing Table:   1400
    LACNIC Prefixes per ASN:                                      21.04
LACNIC Region origin ASes announcing only one prefix:               442
LACNIC Region transit ASes present in the Internet Routing Table:   245
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              78080512
    Equivalent to 4 /8s, 167 /16s and 106 /24s
    Percentage of available LACNIC address space announced:        58.2

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:                   7665
    Total AfriNIC prefixes after maximum aggregation:              1872
    AfriNIC Deaggregation factor:                                  4.09
Prefixes being announced from the AfriNIC address blocks:          5958
    Unique aggregates announced from the AfriNIC address blocks:   1751
AfriNIC Region origin ASes present in the Internet Routing Table:   419
    AfriNIC Prefixes per ASN:                                     14.22
AfriNIC Region origin ASes announcing only one prefix:              136
AfriNIC Region transit ASes present in the Internet Routing Table:   93
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC addresses announced to Internet:             21409792
    Equivalent to 1 /8s, 70 /16s and 176 /24s
    Percentage of available AfriNIC address space announced:       42.5

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 105/8, 197/8,

APNIC Region per AS prefix count summary
----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     1873       9470         522   Korea Telecom (KIX)
 7545     1453        299          80   TPG Internet Pty Ltd
 4755     1385        639         158   TATA Communications formerly 
17488     1368        157         121   Hathway IP Over Cable Interne
17974     1316        427          27   PT TELEKOMUNIKASI INDONESIA
 9583     1035         75         487   Sify Limited
24560     1030        309         166   Bharti Airtel Ltd., Telemedia
 4808      982       1714         265   CNCGROUP IP network: China169
18101      908        116         141   Reliance Infocom Ltd Internet
 9829      836        696          31   BSNL National Internet Backbo

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

ARIN Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3742       3890         273   bellsouth.net, inc. 
 4323     2653       1088         402   Time Warner Telecom
19262     1839       4868         283   Verizon Global Networks 
 1785     1803        697         132   PaeTec Communications, Inc.
20115     1512       1532         640   Charter Communications 
 6478     1413        285          80   AT&T Worldnet Services 
 7018     1395       5670         891   AT&T WorldNet Services
 2386     1312        572         930   AT&T Data Communications Serv
11492     1260        233          62   Cable One 
22773     1255       2864          72   Cox Communications, Inc.

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

RIPE Region per AS prefix count summary
---------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 3215      477       3238          97   France Telecom Transpac
 3292      445       2010         387   TDC Tele Danmark
 8866      438        134          24   Bulgarian Telecommunication C
 9198      416        202          13   Kazakhtelecom Data Network Ad
 8551      401        353          46   Bezeq International
34984      401         92         192   BILISIM TELEKOM
  702      397       1865         311   UUNET - Commercial IP service
 3301      383       1696         336   TeliaNet Sweden
12479      382        576           5   Uni2 Autonomous System
 3320      381       7317         334   Deutsche Telekom AG

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

LACNIC Region per AS prefix count summary
-----------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8151     1342       2625         365   UniNet S.A. de C.V. 
10620     1335        249         158   TVCABLE BOGOTA 
28573     1186        932          79   NET Servicos de Comunicao S.A
 6503     1158        355          80   AVANTEL, S.A. 
 7303      827        441         105   Telecom Argentina Stet-France
14420      575         49          83   CORPORACION NACIONAL DE TELEC
22047      564        310          15   VTR PUNTO NET S.A. 
 3816      489        214          96   Empresa Nacional de Telecomun
 7738      478        922          30   Telecomunicacoes da Bahia S.A
14117      450         32          29   Telefonica del Sur S.A. 

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

AfriNIC Region per AS prefix count summary
------------------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 8452     1122        445          10   TEDATA
24863      742        147          39   LINKdotNET AS number
36992      653        278         161   Etisalat MISR
 3741      264        923         226   The Internet Solution 
 6713      203        199          12   Itissalat Al-MAGHRIB
24835      198         78          10   RAYA Telecom - Egypt
29571      197         19          11   Ci Telecom Autonomous system 
 2018      196        277          64   Tertiary Education Network 
33776      195         12          14   Starcomms Nigeria Limited
16637      153        423          87   MTN Network Solutions

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

Global Per AS prefix count summary
----------------------------------

  ASN   No of nets  /20 equiv  MaxAgg  Description
 6389     3742       3890         273   bellsouth.net, inc. 
 4323     2653       1088         402   Time Warner Telecom
 4766     1873       9470         522   Korea Telecom (KIX)
19262     1839       4868         283   Verizon Global Networks 
 1785     1803        697         132   PaeTec Communications, Inc.
20115     1512       1532         640   Charter Communications 
 7545     1453        299          80   TPG Internet Pty Ltd
 6478     1413        285          80   AT&T Worldnet Services 
 7018     1395       5670         891   AT&T WorldNet Services
 4755     1385        639         158   TATA Communications formerly 

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

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

  ASN   No of nets  Net Savings Description
 4323      2653        2251      Time Warner Telecom
 1785      1803        1671      PaeTec Communications, Inc.
19262      1839        1556      Verizon Global Networks 
 7545      1453        1373      TPG Internet Pty Ltd
 4766      1873        1351      Korea Telecom (KIX)
 6478      1413        1333      AT&T Worldnet Services 
17974      1316        1289      PT TELEKOMUNIKASI INDONESIA
17488      1368        1247      Hathway IP Over Cable Interne
 4755      1385        1227      TATA Communications formerly 
11492      1260        1198      Cable One 

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

List of Unregistered Origin ASNs (Global)
-----------------------------------------

Bad AS  Designation  Network              Transit AS  Description
46164   UNALLOCATED  4.23.88.0/24          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.23.89.0/24          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.23.92.0/23          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.23.94.0/23          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.38.0.0/21           7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.38.8.0/21           7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.43.50.0/24          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.43.51.0/24          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.67.96.0/21          7018       AT&T WorldNet Servic
46164   UNALLOCATED  4.67.104.0/21         7018       AT&T WorldNet Servic

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

Advertised Unallocated Addresses
--------------------------------

Network            Origin AS  Description
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<<
46.22.128.0/20       39122     Blacknight Internet Solutions
46.142.0.0/16        25295     Autonomous System of KielNET 
46.162.64.0/18       29518     Labs2
46.182.120.0/22      16265     LeaseWeb AS Macro
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 

Complete listing at http://thyme.rand.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      /10:25      /11:70      /12:208     
/13:426     /14:749     /15:1332    /16:11325   /17:5490    /18:9197    
/19:18485   /20:23713   /21:24084   /22:31717   /23:30443   /24:176498  
/25:981     /26:1081    /27:585     /28:158     /29:12      /30:2       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2310          3742      bellsouth.net, inc. 
 4323     1432          2653      Time Warner Telecom
 6478     1371          1413      AT&T Worldnet Services 
10620     1227          1335      TVCABLE BOGOTA 
11492     1217          1260      Cable One 
 1785     1078          1803      PaeTec Communications, Inc.
18566     1073          1092      Covad Communications 
 7011     1060          1161      Citizens Utilities 
 8452      985          1122      TEDATA
19262      958          1839      Verizon Global Networks 

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

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

   1:101       2:29        4:13        8:316      12:2023     13:6      
  14:69       15:17       16:3        17:8        20:9        24:1418   
  27:461      31:1        32:61       33:8        34:2        36:1      
  38:717      40:101      41:2655     42:1        44:3        46:289    
  47:10       49:30       50:13       52:12       55:5        56:2      
  57:29       58:852      59:499      60:499      61:1145     62:1013   
  63:1941     64:3716     65:2329     66:4086     67:1793     68:996    
  69:2809     70:719      71:382      72:1920     74:2281     75:285    
  76:319      77:869      78:678      79:437      80:1043     81:791    
  82:524      83:440      84:627      85:1019     86:484      87:700    
  88:381      89:1583     90:161      91:3235     92:541      93:1007   
  94:1127     95:667      96:403      97:241      98:688      99:33     
 101:3       107:2       108:69      109:769     110:425     111:661    
 112:305     113:324     114:473     115:635     116:1131    117:660    
 118:575     119:995     120:161     121:711     122:1586    123:963    
 124:1238    125:1270    128:227     129:151     130:169     131:556    
 132:235     133:20      134:207     135:46      136:210     137:146    
 138:287     139:109     140:475     141:195     142:348     143:512    
 144:484     145:54      146:430     147:170     148:640     149:319    
 150:151     151:231     152:294     153:175     154:3       155:365    
 156:166     157:342     158:122     159:367     160:311     161:199    
 162:276     163:165     164:434     165:331     166:465     167:429    
 168:709     169:152     170:720     171:67      172:2       173:1111   
 174:443     175:254     176:1       178:635     180:709     182:518    
 183:243     184:186     186:853     187:744     188:858     189:1022   
 190:4226    192:5772    193:4795    194:3469    195:2875    196:1211   
 197:1       198:3527    199:3656    200:5455    201:1576    202:8221   
 203:8323    204:4051    205:2353    206:2519    207:2983    208:3874   
 209:3459    210:2538    211:1297    212:1812    213:1715    214:682    
 215:62      216:4738    217:1607    218:565     219:398     220:1223   
 221:422     222:342     223:76     

End of report




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