[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 22 18:51:43 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 23 Oct, 2010

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

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

BGP routing table entries examined:                              334429
    Prefixes after maximum aggregation:                          152752
    Deaggregation factor:                                          2.19
    Unique aggregates announced to Internet:                     164630
Total ASes present in the Internet Routing Table:                 35103
    Prefixes per ASN:                                              9.53
Origin-only ASes present in the Internet Routing Table:           30270
Origin ASes announcing only one prefix:                           14793
Transit ASes present in the Internet Routing Table:                4833
Transit-only ASes present in the Internet Routing Table:            122
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:               309
    Unregistered ASNs in the Routing Table:                         130
Number of 32-bit ASNs allocated by the RIRs:                        829
Prefixes from 32-bit ASNs in the Routing Table:                       0
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            196
Number of addresses announced to Internet:                   2290781856
    Equivalent to 136 /8s, 138 /16s and 142 /24s
    Percentage of available address space announced:               61.8
    Percentage of allocated address space announced:               65.4
    Percentage of available address space allocated:               94.6
    Percentage of address space in use by end-sites:               85.3
Total number of prefixes smaller than registry allocations:      137383

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

Prefixes being announced by APNIC Region ASes:                    81988
    Total APNIC prefixes after maximum aggregation:               27957
    APNIC Deaggregation factor:                                    2.93
Prefixes being announced from the APNIC address blocks:           78894
    Unique aggregates announced from the APNIC address blocks:    34579
APNIC Region origin ASes present in the Internet Routing Table:    4218
    APNIC Prefixes per ASN:                                       18.70
APNIC Region origin ASes announcing only one prefix:               1178
APNIC Region transit ASes present in the Internet Routing Table:    675
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         17
Number of APNIC addresses announced to Internet:              560261152
    Equivalent to 33 /8s, 100 /16s and 232 /24s
    Percentage of available APNIC address space announced:         75.9

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,  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:                    137432
    Total ARIN prefixes after maximum aggregation:                71024
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           108852
    Unique aggregates announced from the ARIN address blocks:     43520
ARIN Region origin ASes present in the Internet Routing Table:    13992
    ARIN Prefixes per ASN:                                         7.78
ARIN Region origin ASes announcing only one prefix:                5369
ARIN Region transit ASes present in the Internet Routing Table:    1478
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          23
Number of ARIN addresses announced to Internet:               737933824
    Equivalent to 43 /8s, 251 /16s and 250 /24s
    Percentage of available ARIN address space announced:          62.8

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:                     76974
    Total RIPE prefixes after maximum aggregation:                44606
    RIPE Deaggregation factor:                                     1.73
Prefixes being announced from the RIPE address blocks:            70398
    Unique aggregates announced from the RIPE address blocks:     46166
RIPE Region origin ASes present in the Internet Routing Table:    14926
    RIPE Prefixes per ASN:                                         4.72
RIPE Region origin ASes announcing only one prefix:                7695
RIPE Region transit ASes present in the Internet Routing Table:    2306
Average RIPE Region AS path length visible:                         4.4
    Max RIPE Region AS path length visible:                          30
Number of RIPE addresses announced to Internet:               442325120
    Equivalent to 26 /8s, 93 /16s and 88 /24s
    Percentage of available RIPE address space announced:          77.5

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:                   30290
    Total LACNIC prefixes after maximum aggregation:               7185
    LACNIC Deaggregation factor:                                   4.22
Prefixes being announced from the LACNIC address blocks:          28964
    Unique aggregates announced from the LACNIC address blocks:   15428
LACNIC Region origin ASes present in the Internet Routing Table:   1371
    LACNIC Prefixes per ASN:                                      21.13
LACNIC Region origin ASes announcing only one prefix:               427
LACNIC Region transit ASes present in the Internet Routing Table:   238
Average LACNIC Region AS path length visible:                       4.3
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              76358016
    Equivalent to 4 /8s, 141 /16s and 33 /24s
    Percentage of available LACNIC address space announced:        56.9

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:                   7519
    Total AfriNIC prefixes after maximum aggregation:              1866
    AfriNIC Deaggregation factor:                                  4.03
Prefixes being announced from the AfriNIC address blocks:          5824
    Unique aggregates announced from the AfriNIC address blocks:   1725
AfriNIC Region origin ASes present in the Internet Routing Table:   410
    AfriNIC Prefixes per ASN:                                     14.20
AfriNIC Region origin ASes announcing only one prefix:              124
AfriNIC Region transit ASes present in the Internet Routing Table:   91
Average AfriNIC Region AS path length visible:                      5.2
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC addresses announced to Internet:             20921088
    Equivalent to 1 /8s, 63 /16s and 59 /24s
    Percentage of available AfriNIC address space announced:       62.3

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     1875       9453         513   Korea Telecom (KIX)
 7545     1417        299          78   TPG Internet Pty Ltd
 4755     1373        382         158   TATA Communications formerly 
17488     1364        156         121   Hathway IP Over Cable Interne
17974     1274        304          79   PT TELEKOMUNIKASI INDONESIA
24560     1051        309         180   Bharti Airtel Ltd., Telemedia
 9583     1030         76         493   Sify Limited
 4808      977       1722         266   CNCGROUP IP network: China169
18101      892        116         134   Reliance Infocom Ltd Internet
 9829      827        694          27   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     3765       3667         278   bellsouth.net, inc. 
 4323     2621       1103         394   Time Warner Telecom
 1785     1794        698         130   PaeTec Communications, Inc.
19262     1777       4833         279   Verizon Global Networks 
20115     1506       1528         647   Charter Communications 
 7018     1437       5692         920   AT&T WorldNet Services
 6478     1387        279          98   AT&T Worldnet Services 
 2386     1311        556         927   AT&T Data Communications Serv
11492     1236        231          74   Cable One 
22773     1207       2859          62   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
 3292      444       2027         389   TDC Tele Danmark
 8866      420        133          25   Bulgarian Telecommunication C
 8551      402        353          46   Bezeq International
  702      397       1866         311   UUNET - Commercial IP service
34984      381         91         188   BILISIM TELEKOM
 3301      379       1688         335   TeliaNet Sweden
 3320      377       7332         330   Deutsche Telekom AG
30890      376         80         205   Evolva Telecom
12479      364        576           5   Uni2 Autonomous System
31148      359         19          79   FreeNet ISP

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     1332        247         150   TVCABLE BOGOTA 
 8151     1327       2597         363   UniNet S.A. de C.V. 
28573     1220        920          84   NET Servicos de Comunicao S.A
 7303      831        441         107   Telecom Argentina Stet-France
 6503      785        223         258   AVANTEL, S.A. 
22047      564        310          15   VTR PUNTO NET S.A. 
14420      545         39          76   CORPORACION NACIONAL DE TELEC
 3816      484        210          95   Empresa Nacional de Telecomun
 7738      478        922          30   Telecomunicacoes da Bahia S.A
14117      448         32          27   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     1060        445          10   TEDATA
24863      742        147          39   LINKdotNET AS number
36992      639        278         159   Etisalat MISR
 3741      268        907         225   The Internet Solution 
24835      210         78          10   RAYA Telecom - Egypt
 6713      203        199          12   Itissalat Al-MAGHRIB
29571      203         19          11   Ci Telecom Autonomous system 
 2018      197        277          64   Tertiary Education Network 
33776      196         12          14   Starcomms Nigeria Limited
16637      154        440          91   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     3765       3667         278   bellsouth.net, inc. 
 4323     2621       1103         394   Time Warner Telecom
 4766     1875       9453         513   Korea Telecom (KIX)
 1785     1794        698         130   PaeTec Communications, Inc.
19262     1777       4833         279   Verizon Global Networks 
20115     1506       1528         647   Charter Communications 
 7018     1437       5692         920   AT&T WorldNet Services
 7545     1417        299          78   TPG Internet Pty Ltd
 6478     1387        279          98   AT&T Worldnet Services 
 4755     1373        382         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      2621        2227      Time Warner Telecom
 1785      1794        1664      PaeTec Communications, Inc.
19262      1777        1498      Verizon Global Networks 
 4766      1875        1362      Korea Telecom (KIX)
 7545      1417        1339      TPG Internet Pty Ltd
 6478      1387        1289      AT&T Worldnet Services 
17488      1364        1243      Hathway IP Over Cable Interne
 4755      1373        1215      TATA Communications formerly 
17974      1274        1195      PT TELEKOMUNIKASI INDONESIA
10620      1332        1182      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
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<<
62.61.220.0/24       24974     Tachyon Europe BV - Wireless 
62.61.221.0/24       24974     Tachyon Europe BV - Wireless 
64.21.192.0/20       11610     Internet Nebraska Corporation
64.21.212.0/22       11610     Internet Nebraska Corporation
64.21.216.0/21       11610     Internet Nebraska Corporation

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      /11:68      /12:207     
/13:420     /14:744     /15:1345    /16:11370   /17:5497    /18:9345    
/19:18553   /20:23802   /21:23849   /22:31438   /23:30643   /24:174207  
/25:999     /26:1129    /27:583     /28:155     /29:12      /30:2       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2330          3765      bellsouth.net, inc. 
 4323     1410          2621      Time Warner Telecom
 6478     1349          1387      AT&T Worldnet Services 
10620     1220          1332      TVCABLE BOGOTA 
11492     1193          1236      Cable One 
 1785     1077          1794      PaeTec Communications, Inc.
18566     1069          1088      Covad Communications 
 7011     1058          1159      Citizens Utilities 
 8452      967          1060      TEDATA
19262      903          1777      Verizon Global Networks 

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

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

   1:87        2:12        4:13        8:313      12:2010     13:8      
  14:44       15:20       16:3        17:9        20:9        24:1386   
  27:383      31:1        32:61       33:12       38:696      40:97     
  41:2563     44:3        46:164      47:10       49:4        50:1      
  52:12       55:5        56:2        57:31       58:837      59:498    
  60:480      61:1112     62:1012     63:1964     64:3748     65:2344   
  66:4066     67:1819     68:1139     69:2850     70:757      71:376    
  72:1937     73:2        74:2334     75:295      76:326      77:868    
  78:691      79:445      80:1047     81:805      82:499      83:453    
  84:690      85:1020     86:433      87:694      88:326      89:1569   
  90:110      91:3125     92:431      93:1019     94:1110     95:700    
  96:395      97:222      98:628      99:33      101:3       108:64     
 109:708     110:434     111:608     112:305     113:305     114:483    
 115:607     116:1137    117:662     118:541     119:983     120:164    
 121:720     122:1596    123:917     124:1226    125:1270    128:228    
 129:152     130:167     131:566     132:275     133:20      134:207    
 135:46      136:212     137:139     138:280     139:109     140:479    
 141:198     142:347     143:383     144:498     145:55      146:432    
 147:174     148:621     149:308     150:146     151:231     152:293    
 153:175     154:3       155:369     156:166     157:334     158:112    
 159:361     160:313     161:198     162:271     163:166     164:424    
 165:349     166:469     167:424     168:683     169:154     170:718    
 171:61      172:2       173:1042    174:496     175:241     176:1      
 177:1       178:542     180:682     181:1       182:240     183:236    
 184:131     186:740     187:541     188:850     189:804     190:4189   
 192:5761    193:4752    194:3434    195:2826    196:1199    198:3542   
 199:3632    200:5419    201:1575    202:8158    203:8282    204:4008   
 205:2316    206:2566    207:3028    208:3907    209:3476    210:2559   
 211:1281    212:1798    213:1719    214:686     215:66      216:4769   
 217:1558    218:521     219:401     220:1182    221:429     222:343    
 223:58     

End of report



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