Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Feb 4 12:27:05 CST 2011


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 05 Feb, 2011

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

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

BGP routing table entries examined:                              344448
    Prefixes after maximum aggregation:                          155332
    Deaggregation factor:                                          2.22
    Unique aggregates announced to Internet:                     170039
Total ASes present in the Internet Routing Table:                 35787
    Prefixes per ASN:                                              9.62
Origin-only ASes present in the Internet Routing Table:           30852
Origin ASes announcing only one prefix:                           14951
Transit ASes present in the Internet Routing Table:                4935
Transit-only ASes present in the Internet Routing Table:            119
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:               397
    Unregistered ASNs in the Routing Table:                         129
Number of 32-bit ASNs allocated by the RIRs:                       1077
Prefixes from 32-bit ASNs in the Routing Table:                       1
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            203
Number of addresses announced to Internet:                   2380656448
    Equivalent to 141 /8s, 229 /16s and 239 /24s
    Percentage of available address space announced:               64.2
    Percentage of allocated address space announced:               65.7
    Percentage of available address space allocated:               97.7
    Percentage of address space in use by end-sites:               88.1
Total number of prefixes smaller than registry allocations:      142101

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

Prefixes being announced by APNIC Region ASes:                    85206
    Total APNIC prefixes after maximum aggregation:               28888
    APNIC Deaggregation factor:                                    2.95
Prefixes being announced from the APNIC address blocks:           81892
    Unique aggregates announced from the APNIC address blocks:    35574
APNIC Region origin ASes present in the Internet Routing Table:    4314
    APNIC Prefixes per ASN:                                       18.98
APNIC Region origin ASes announcing only one prefix:               1208
APNIC Region transit ASes present in the Internet Routing Table:    687
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         20
Number of APNIC addresses announced to Internet:              586924320
    Equivalent to 34 /8s, 251 /16s and 193 /24s
    Percentage of available APNIC address space announced:         76.1

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,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 106/8,
                       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:                    138523
    Total ARIN prefixes after maximum aggregation:                70948
    ARIN Deaggregation factor:                                     1.95
Prefixes being announced from the ARIN address blocks:           109351
    Unique aggregates announced from the ARIN address blocks:     44581
ARIN Region origin ASes present in the Internet Routing Table:    14172
    ARIN Prefixes per ASN:                                         7.72
ARIN Region origin ASes announcing only one prefix:                5410
ARIN Region transit ASes present in the Internet Routing Table:    1468
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          23
Number of ARIN addresses announced to Internet:               751911808
    Equivalent to 44 /8s, 209 /16s and 67 /24s
    Percentage of available ARIN address space announced:          63.1

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:                     81469
    Total RIPE prefixes after maximum aggregation:                46272
    RIPE Deaggregation factor:                                     1.76
Prefixes being announced from the RIPE address blocks:            74776
    Unique aggregates announced from the RIPE address blocks:     48554
RIPE Region origin ASes present in the Internet Routing Table:    15262
    RIPE Prefixes per ASN:                                         4.90
RIPE Region origin ASes announcing only one prefix:                7770
RIPE Region transit ASes present in the Internet Routing Table:    2373
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          30
Number of RIPE addresses announced to Internet:               457667392
    Equivalent to 27 /8s, 71 /16s and 115 /24s
    Percentage of available RIPE address space announced:          75.8

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, 56320-58367
                       196608-198655
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:                   31580
    Total LACNIC prefixes after maximum aggregation:               7273
    LACNIC Deaggregation factor:                                   4.34
Prefixes being announced from the LACNIC address blocks:          30338
    Unique aggregates announced from the LACNIC address blocks:   15849
LACNIC Region origin ASes present in the Internet Routing Table:   1424
    LACNIC Prefixes per ASN:                                      21.30
LACNIC Region origin ASes announcing only one prefix:               430
LACNIC Region transit ASes present in the Internet Routing Table:   250
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC addresses announced to Internet:              80422528
    Equivalent to 4 /8s, 203 /16s and 38 /24s
    Percentage of available LACNIC address space announced:        59.9

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:                   7450
    Total AfriNIC prefixes after maximum aggregation:              1839
    AfriNIC Deaggregation factor:                                  4.05
Prefixes being announced from the AfriNIC address blocks:          5872
    Unique aggregates announced from the AfriNIC address blocks:   1790
AfriNIC Region origin ASes present in the Internet Routing Table:   436
    AfriNIC Prefixes per ASN:                                     13.47
AfriNIC Region origin ASes announcing only one prefix:              132
AfriNIC Region transit ASes present in the Internet Routing Table:   96
Average AfriNIC Region AS path length visible:                      5.3
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC addresses announced to Internet:             21818624
    Equivalent to 1 /8s, 76 /16s and 237 /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     1914       9485         525   Korea Telecom (KIX)
 7545     1619        301          84   TPG Internet Pty Ltd
 4755     1409        637         161   TATA Communications formerly 
17974     1391        467          27   PT TELEKOMUNIKASI INDONESIA
24560     1099        318         182   Bharti Airtel Ltd., Telemedia
 9583     1044         76         490   Sify Limited
 4808     1034       2130         292   CNCGROUP IP network: China169
17488      952        162         104   Hathway IP Over Cable Interne
18101      928        117         144   Reliance Infocom Ltd Internet
 9829      895        762          41   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     3704       3855         265   bellsouth.net, inc. 
 4323     2622       1109         403   Time Warner Telecom
19262     1842       4949         287   Verizon Global Networks 
 1785     1784        697         132   PaeTec Communications, Inc.
20115     1522       1532         642   Charter Communications 
 6478     1482        291          81   AT&T Worldnet Services 
 7018     1353       6673         871   AT&T WorldNet Services
 2386     1295        553         933   AT&T Data Communications Serv
22773     1278       2865          78   Cox Communications, Inc.
11492     1264        235          79   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      515       1764         319   UPC Distribution Services
 9198      464        266          14   Kazakhtelecom Data Network Ad
34984      458         97         137   BILISIM TELEKOM
 3292      447       2011         390   TDC Tele Danmark
 8866      440        133          23   Bulgarian Telecommunication C
 3320      407       7620         355   Deutsche Telekom AG
 8551      403        353          46   Bezeq International
  702      397       1817         310   UUNET - Commercial IP service
20940      387         89         296   Akamai Technologies European 
 3301      382       1822         340   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
10620     1357        252         162   TVCABLE BOGOTA 
 8151     1332       2647         359   UniNet S.A. de C.V. 
28573     1238        961          82   NET Servicos de Comunicao S.A
 6503     1187        355          78   AVANTEL, S.A. 
 7303      882        461         112   Telecom Argentina Stet-France
14420      625         56          93   CORPORACION NACIONAL DE TELEC
22047      548        310          15   VTR PUNTO NET S.A. 
 3816      500        220          94   Empresa Nacional de Telecomun
 7738      478        922          30   Telecomunicacoes da Bahia S.A
14117      456         34          31   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      800        445          11   TEDATA
24863      761        147          39   LINKdotNET AS number
36992      635        329          19   Etisalat MISR
 3741      264        987         226   The Internet Solution 
24835      217         78          10   RAYA Telecom - Egypt
 6713      203        199          12   Itissalat Al-MAGHRIB
33776      194         12          15   Starcomms Nigeria Limited
29571      192         17          11   Ci Telecom Autonomous system 
16637      146        422          83   MTN Network Solutions
29975      132        490          17   Vodacom

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     3704       3855         265   bellsouth.net, inc. 
 4323     2622       1109         403   Time Warner Telecom
 4766     1914       9485         525   Korea Telecom (KIX)
19262     1842       4949         287   Verizon Global Networks 
 1785     1784        697         132   PaeTec Communications, Inc.
 7545     1619        301          84   TPG Internet Pty Ltd
20115     1522       1532         642   Charter Communications 
 6478     1482        291          81   AT&T Worldnet Services 
 4755     1409        637         161   TATA Communications formerly 
17974     1391        467          27   PT TELEKOMUNIKASI INDONESIA

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      2622        2219      Time Warner Telecom
 1785      1784        1652      PaeTec Communications, Inc.
19262      1842        1555      Verizon Global Networks 
 7545      1619        1535      TPG Internet Pty Ltd
 6478      1482        1401      AT&T Worldnet Services 
 4766      1914        1389      Korea Telecom (KIX)
17974      1391        1364      PT TELEKOMUNIKASI INDONESIA
 4755      1409        1248      TATA Communications formerly 
22773      1278        1200      Cox Communications, Inc.
10620      1357        1195      TVCABLE BOGOTA 

Complete listing at http://thyme.rand.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        4323       Time Warner Telecom
13746   UNALLOCATED  12.24.56.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.25.107.0/24        4323       Time Warner Telecom
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.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
41.78.192.0/22       30999     Emtel is GSM, 3G and ISP in M
41.78.228.0/22        5713     Telkom SA Ltd 
41.222.79.0/24       36938     >>UNKNOWN<<

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       /9:11      /10:26      /11:72      /12:221     
/13:445     /14:772     /15:1371    /16:11547   /17:5632    /18:9292    
/19:18815   /20:24292   /21:24666   /22:32814   /23:31471   /24:180138  
/25:995     /26:1072    /27:587     /28:163     /29:16      /30:3       
/31:0       /32:8       

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

  ASN   No of nets  Total ann.   Description
 6389     2283          3704      bellsouth.net, inc. 
 6478     1436          1482      AT&T Worldnet Services 
 4323     1412          2622      Time Warner Telecom
10620     1248          1357      TVCABLE BOGOTA 
11492     1221          1264      Cable One 
18566     1160          1182      Covad Communications 
 7011     1063          1164      Citizens Utilities 
 1785     1053          1784      PaeTec Communications, Inc.
 6503      963          1187      AVANTEL, S.A. 
19262      954          1842      Verizon Global Networks 

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

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

   1:169       2:39        4:13        5:1         8:334      12:2027   
  13:1        14:396      15:15       16:3        17:8        20:9      
  23:1        24:1465     27:570      32:61       33:5        34:2      
  37:1        38:695      40:101      41:2326     44:3        46:563    
  47:5        49:143      50:84       52:12       55:5        56:2      
  57:31       58:866      59:483      60:391      61:1116     62:1065   
  63:1919     64:3753     65:2358     66:4116     67:1760     68:1004   
  69:2878     70:717      71:397      72:1992     73:1        74:2322   
  75:293      76:329      77:848      78:702      79:440      80:1044   
  81:808      82:534      83:473      84:645      85:1046     86:533    
  87:732      88:356      89:1584     90:157      91:3458     92:494    
  93:1038     94:1195     95:791      96:416      97:250      98:759    
  99:33      101:23      107:3       108:82      109:863     110:472    
 111:693     112:312     113:354     114:495     115:641     116:922    
 117:676     118:649     119:1020    120:240     121:698     122:1612   
 123:1053    124:1269    125:1216    128:264     129:152     130:172    
 131:567     132:110     133:20      134:217     135:49      136:216    
 137:147     138:290     139:120     140:490     141:196     142:362    
 143:376     144:483     145:51      146:425     147:193     148:626    
 149:273     150:151     151:230     152:306     153:177     154:3      
 155:347     156:173     157:342     158:128     159:380     160:315    
 161:205     162:278     163:159     164:486     165:338     166:481    
 167:420     168:741     169:152     170:750     171:66      172:2      
 173:1275    174:521     175:314     176:1       177:12      178:752    
 180:778     182:340     183:250     184:208     186:988     187:790    
 188:912     189:1053    190:4357    192:5785    193:4800    194:3500   
 195:2946    196:1176    197:3       198:3579    199:3755    200:5592   
 201:1579    202:8263    203:8417    204:4097    205:2341    206:2632   
 207:3083    208:3884    209:3499    210:2641    211:1332    212:1859   
 213:1717    214:757     215:62      216:4796    217:1615    218:528    
 219:376     220:1202    221:449     222:319     223:95     

End of report




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