[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Dec 10 20:35:53 UTC 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 11 Dec, 2010

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

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

BGP routing table entries examined:                              338487
    Prefixes after maximum aggregation:                          152765
    Deaggregation factor:                                          2.22
    Unique aggregates announced to Internet:                     166476
Total ASes present in the Internet Routing Table:                 35460
    Prefixes per ASN:                                              9.55
Origin-only ASes present in the Internet Routing Table:           30540
Origin ASes announcing only one prefix:                           14921
Transit ASes present in the Internet Routing Table:                4920
Transit-only ASes present in the Internet Routing Table:            118
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:               684
    Unregistered ASNs in the Routing Table:                         323
Number of 32-bit ASNs allocated by the RIRs:                        939
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:            193
Number of addresses announced to Internet:                   2317458720
    Equivalent to 138 /8s, 33 /16s and 157 /24s
    Percentage of available address space announced:               62.5
    Percentage of allocated address space announced:               64.6
    Percentage of available address space allocated:               96.8
    Percentage of address space in use by end-sites:               86.6
Total number of prefixes smaller than registry allocations:      139176

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

Prefixes being announced by APNIC Region ASes:                    83574
    Total APNIC prefixes after maximum aggregation:               28342
    APNIC Deaggregation factor:                                    2.95
Prefixes being announced from the APNIC address blocks:           80522
    Unique aggregates announced from the APNIC address blocks:    34882
APNIC Region origin ASes present in the Internet Routing Table:    4270
    APNIC Prefixes per ASN:                                       18.86
APNIC Region origin ASes announcing only one prefix:               1209
APNIC Region transit ASes present in the Internet Routing Table:    691
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         20
Number of APNIC addresses announced to Internet:              571740448
    Equivalent to 34 /8s, 20 /16s and 17 /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:                    136853
    Total ARIN prefixes after maximum aggregation:                69866
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           107840
    Unique aggregates announced from the ARIN address blocks:     43908
ARIN Region origin ASes present in the Internet Routing Table:    14068
    ARIN Prefixes per ASN:                                         7.67
ARIN Region origin ASes announcing only one prefix:                5390
ARIN Region transit ASes present in the Internet Routing Table:    1494
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          23
Number of ARIN addresses announced to Internet:               741824128
    Equivalent to 44 /8s, 55 /16s and 86 /24s
    Percentage of available ARIN address space announced:          62.3

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,  23/8,  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, 100/8,
                       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:                     79084
    Total RIPE prefixes after maximum aggregation:                45393
    RIPE Deaggregation factor:                                     1.74
Prefixes being announced from the RIPE address blocks:            72578
    Unique aggregates announced from the RIPE address blocks:     47126
RIPE Region origin ASes present in the Internet Routing Table:    15108
    RIPE Prefixes per ASN:                                         4.80
RIPE Region origin ASes announcing only one prefix:                7748
RIPE Region transit ASes present in the Internet Routing Table:    2336
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          30
Number of RIPE addresses announced to Internet:               450700800
    Equivalent to 26 /8s, 221 /16s and 38 /24s
    Percentage of available RIPE address space announced:          74.6

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,   5/8,  25/8,  31/8,  37/8,  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:                   31053
    Total LACNIC prefixes after maximum aggregation:               7139
    LACNIC Deaggregation factor:                                   4.35
Prefixes being announced from the LACNIC address blocks:          29788
    Unique aggregates announced from the LACNIC address blocks:   15473
LACNIC Region origin ASes present in the Internet Routing Table:   1408
    LACNIC Prefixes per ASN:                                      21.16
LACNIC Region origin ASes announcing only one prefix:               439
LACNIC Region transit ASes present in the Internet Routing Table:   253
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              78606336
    Equivalent to 4 /8s, 175 /16s and 112 /24s
    Percentage of available LACNIC address space announced:        58.6

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:                   7683
    Total AfriNIC prefixes after maximum aggregation:              1907
    AfriNIC Deaggregation factor:                                  4.03
Prefixes being announced from the AfriNIC address blocks:          5972
    Unique aggregates announced from the AfriNIC address blocks:   1792
AfriNIC Region origin ASes present in the Internet Routing Table:   426
    AfriNIC Prefixes per ASN:                                     14.02
AfriNIC Region origin ASes announcing only one prefix:              135
AfriNIC Region transit ASes present in the Internet Routing Table:   92
Average AfriNIC Region AS path length visible:                      5.3
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC addresses announced to Internet:             21769216
    Equivalent to 1 /8s, 76 /16s and 44 /24s
    Percentage of available AfriNIC address space announced:       43.3

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     1874       9453         520   Korea Telecom (KIX)
 7545     1573        299          79   TPG Internet Pty Ltd
 4755     1422        648         141   TATA Communications formerly 
17974     1331        459          27   PT TELEKOMUNIKASI INDONESIA
17488     1102        158         113   Hathway IP Over Cable Interne
 9583     1043        107         487   Sify Limited
24560     1035        309         170   Bharti Airtel Ltd., Telemedia
 4808      990       1715         271   CNCGROUP IP network: China169
18101      939        116         138   Reliance Infocom Ltd Internet
 9829      838        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     3736       3887         269   bellsouth.net, inc. 
 4323     2641       1077         400   Time Warner Telecom
19262     1834       4869         282   Verizon Global Networks 
 1785     1795        697         132   PaeTec Communications, Inc.
20115     1512       1531         640   Charter Communications 
 6478     1427        289          75   AT&T Worldnet Services 
 7018     1360       5652         873   AT&T WorldNet Services
 2386     1308        571         926   AT&T Data Communications Serv
22773     1261       2864          74   Cox Communications, Inc.
11492     1256        234          73   Cable One 

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
 6830      502       1763         309   UPC Distribution Services
 3292      443       2010         385   TDC Tele Danmark
 8866      435        137          24   Bulgarian Telecommunication C
 9121      431       1690          29   TTnet Autonomous System
34984      422         92         191   BILISIM TELEKOM
 9198      414        202          13   Kazakhtelecom Data Network Ad
 8551      402        353          46   Bezeq International
  702      397       1864         311   UUNET - Commercial IP service
12479      397        577           6   Uni2 Autonomous System
 3301      385       1696         341   TeliaNet Sweden

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     1351       2649         369   UniNet S.A. de C.V. 
10620     1344        250         156   TVCABLE BOGOTA 
28573     1209        932          79   NET Servicos de Comunicao S.A
 6503     1175        355          80   AVANTEL, S.A. 
 7303      830        441         106   Telecom Argentina Stet-France
14420      584         49          88   CORPORACION NACIONAL DE TELEC
22047      563        310          15   VTR PUNTO NET S.A. 
 3816      492        214         100   Empresa Nacional de Telecomun
 7738      478        922          30   Telecomunicacoes da Bahia S.A
14117      452         32          30   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     1109        445          10   TEDATA
24863      746        147          39   LINKdotNET AS number
36992      657        274         160   Etisalat MISR
 3741      263        986         225   The Internet Solution 
 6713      203        199          12   Itissalat Al-MAGHRIB
29571      199         19          11   Ci Telecom Autonomous system 
24835      198         78          10   RAYA Telecom - Egypt
 2018      196        277          64   Tertiary Education Network 
33776      184         12          14   Starcomms Nigeria Limited
16637      162        440          89   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     3736       3887         269   bellsouth.net, inc. 
 4323     2641       1077         400   Time Warner Telecom
 4766     1874       9453         520   Korea Telecom (KIX)
19262     1834       4869         282   Verizon Global Networks 
 1785     1795        697         132   PaeTec Communications, Inc.
 7545     1573        299          79   TPG Internet Pty Ltd
20115     1512       1531         640   Charter Communications 
 6478     1427        289          75   AT&T Worldnet Services 
 4755     1422        648         141   TATA Communications formerly 
 7018     1360       5652         873   AT&T WorldNet Services

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      2641        2241      Time Warner Telecom
 1785      1795        1663      PaeTec Communications, Inc.
19262      1834        1552      Verizon Global Networks 
 7545      1573        1494      TPG Internet Pty Ltd
 4766      1874        1354      Korea Telecom (KIX)
 6478      1427        1352      AT&T Worldnet Services 
17974      1331        1304      PT TELEKOMUNIKASI INDONESIA
 4755      1422        1281      TATA Communications formerly 
10620      1344        1188      TVCABLE BOGOTA 
22773      1261        1187      Cox Communications, Inc.

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
5.0.0.0/16           12654     RIPE NCC RIS Project
5.1.0.0/21           12654     RIPE NCC RIS Project
5.1.24.0/24          12654     RIPE NCC RIS Project
24.129.192.0/19       7922     Continental Cablevision 
37.0.0.0/16          12654     RIPE NCC RIS Project
37.1.0.0/21          12654     RIPE NCC RIS Project
37.1.24.0/24         12654     RIPE NCC RIS Project
41.222.79.0/24       36938     >>UNKNOWN<<
41.223.92.0/22       36936     >>UNKNOWN<<
46.164.128.0/18      21219     Datacom Autonomous System

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        /8:19       /9:10      /10:25      /11:70      /12:210     
/13:429     /14:751     /15:1338    /16:11355   /17:5518    /18:9199    
/19:18627   /20:23904   /21:24216   /22:31803   /23:30778   /24:177411  
/25:997     /26:1075    /27:572     /28:158     /29:12      /30:2       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2307          3736      bellsouth.net, inc. 
 4323     1430          2641      Time Warner Telecom
 6478     1384          1427      AT&T Worldnet Services 
10620     1236          1344      TVCABLE BOGOTA 
11492     1213          1256      Cable One 
18566     1070          1089      Covad Communications 
 7011     1069          1172      Citizens Utilities 
 1785     1068          1795      PaeTec Communications, Inc.
 8452      972          1109      TEDATA
 6503      960          1175      AVANTEL, S.A. 

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

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

   1:128       2:16        4:13        5:1         8:316      12:2029   
  13:6        14:88       15:17       16:3        17:8        20:9      
  24:1423     27:488      32:61       33:6        34:2        36:1      
  37:1        38:718      40:101      41:2635     42:1        44:3      
  46:323      47:4        49:38       50:17       52:12       55:6      
  56:2        57:29       58:856      59:515      60:418      61:1127   
  62:1025     63:1938     64:3713     65:2319     66:4068     67:1758   
  68:1002     69:2825     70:716      71:389      72:1947     74:2279   
  75:287      76:319      77:870      78:738      79:437      80:1059   
  81:803      82:511      83:445      84:632      85:1040     86:488    
  87:705      88:406      89:1589     90:137      91:3309     92:457    
  93:1018     94:1098     95:698      96:406      97:246      98:698    
  99:33      101:3       107:2       108:69      109:800     110:469    
 111:668     112:309     113:323     114:482     115:676     116:1000   
 117:664     118:608     119:1007    120:198     121:731     122:1572   
 123:1031    124:1224    125:1232    128:232     129:153     130:170    
 131:567     132:230     133:20      134:208     135:47      136:213    
 137:148     138:289     139:110     140:477     141:196     142:352    
 143:516     144:487     145:54      146:424     147:179     148:641    
 149:326     150:150     151:230     152:295     153:172     154:3      
 155:367     156:166     157:339     158:126     159:369     160:311    
 161:197     162:276     163:165     164:434     165:334     166:470    
 167:420     168:737     169:151     170:723     171:67      172:2      
 173:1132    174:466     175:274     176:1       178:641     180:734    
 182:532     183:241     184:190     186:893     187:759     188:875    
 189:1009    190:4265    192:5786    193:4802    194:3468    195:2894   
 196:1205    197:1       198:3533    199:3670    200:5539    201:1582   
 202:8246    203:8368    204:4045    205:2344    206:2517    207:2978   
 208:3851    209:3477    210:2543    211:1314    212:1875    213:1730   
 214:727     215:62      216:4795    217:1616    218:522     219:403    
 220:1207    221:442     222:341     223:76     

End of report



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