[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Oct 15 18:29:12 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 16 Oct, 2010

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

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

BGP routing table entries examined:                              333673
    Prefixes after maximum aggregation:                          153173
    Deaggregation factor:                                          2.18
    Unique aggregates announced to Internet:                     163976
Total ASes present in the Internet Routing Table:                 34973
    Prefixes per ASN:                                              9.54
Origin-only ASes present in the Internet Routing Table:           30332
Origin ASes announcing only one prefix:                           14721
Transit ASes present in the Internet Routing Table:                4641
Transit-only ASes present in the Internet Routing Table:            102
Average AS path length visible in the Internet Routing Table:       3.6
    Max AS path length visible:                                      24
    Max AS path prepend of ASN (41664)                               21
Prefixes from unregistered ASNs in the Routing Table:               334
    Unregistered ASNs in the Routing Table:                         124
Number of 32-bit ASNs allocated by the RIRs:                        819
Prefixes from 32-bit ASNs in the Routing Table:                    1161
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            216
Number of addresses announced to Internet:                   2280874400
    Equivalent to 135 /8s, 243 /16s and 97 /24s
    Percentage of available address space announced:               61.5
    Percentage of allocated address space announced:               65.7
    Percentage of available address space allocated:               93.7
    Percentage of address space in use by end-sites:               85.3
Total number of prefixes smaller than registry allocations:      137157

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

Prefixes being announced by APNIC Region ASes:                    81624
    Total APNIC prefixes after maximum aggregation:               27931
    APNIC Deaggregation factor:                                    2.92
Prefixes being announced from the APNIC address blocks:           78535
    Unique aggregates announced from the APNIC address blocks:    34462
APNIC Region origin ASes present in the Internet Routing Table:    4204
    APNIC Prefixes per ASN:                                       18.68
APNIC Region origin ASes announcing only one prefix:               1175
APNIC Region transit ASes present in the Internet Routing Table:    644
Average APNIC Region AS path length visible:                        3.7
    Max APNIC Region AS path length visible:                         16
Number of APNIC addresses announced to Internet:              551962912
    Equivalent to 32 /8s, 230 /16s and 73 /24s
    Percentage of available APNIC address space announced:         78.3

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,  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:                    136292
    Total ARIN prefixes after maximum aggregation:                70287
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           108891
    Unique aggregates announced from the ARIN address blocks:     43464
ARIN Region origin ASes present in the Internet Routing Table:    13949
    ARIN Prefixes per ASN:                                         7.81
ARIN Region origin ASes announcing only one prefix:                5337
ARIN Region transit ASes present in the Internet Routing Table:    1381
Average ARIN Region AS path length visible:                         3.4
    Max ARIN Region AS path length visible:                          22
Number of ARIN addresses announced to Internet:               737739008
    Equivalent to 43 /8s, 249 /16s and 1 /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:                     76685
    Total RIPE prefixes after maximum aggregation:                44471
    RIPE Deaggregation factor:                                     1.72
Prefixes being announced from the RIPE address blocks:            70114
    Unique aggregates announced from the RIPE address blocks:     45929
RIPE Region origin ASes present in the Internet Routing Table:    14880
    RIPE Prefixes per ASN:                                         4.71
RIPE Region origin ASes announcing only one prefix:                7660
RIPE Region transit ASes present in the Internet Routing Table:    2244
Average RIPE Region AS path length visible:                         3.9
    Max RIPE Region AS path length visible:                          24
Number of RIPE addresses announced to Internet:               441326464
    Equivalent to 26 /8s, 78 /16s and 27 /24s
    Percentage of available RIPE address space announced:          77.4

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:                   30306
    Total LACNIC prefixes after maximum aggregation:               7173
    LACNIC Deaggregation factor:                                   4.23
Prefixes being announced from the LACNIC address blocks:          28998
    Unique aggregates announced from the LACNIC address blocks:   15164
LACNIC Region origin ASes present in the Internet Routing Table:   1368
    LACNIC Prefixes per ASN:                                      21.20
LACNIC Region origin ASes announcing only one prefix:               429
LACNIC Region transit ASes present in the Internet Routing Table:   237
Average LACNIC Region AS path length visible:                       4.0
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC addresses announced to Internet:              76206464
    Equivalent to 4 /8s, 138 /16s and 209 /24s
    Percentage of available LACNIC address space announced:        56.8

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:                   7350
    Total AfriNIC prefixes after maximum aggregation:              1867
    AfriNIC Deaggregation factor:                                  3.94
Prefixes being announced from the AfriNIC address blocks:          5664
    Unique aggregates announced from the AfriNIC address blocks:   1769
AfriNIC Region origin ASes present in the Internet Routing Table:   405
    AfriNIC Prefixes per ASN:                                     13.99
AfriNIC Region origin ASes announcing only one prefix:              120
AfriNIC Region transit ASes present in the Internet Routing Table:   92
Average AfriNIC Region AS path length visible:                      3.8
    Max AfriNIC Region AS path length visible:                       17
Number of AfriNIC addresses announced to Internet:             20834560
    Equivalent to 1 /8s, 61 /16s and 233 /24s
    Percentage of available AfriNIC address space announced:       62.1

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     1872       9437         510   Korea Telecom (KIX)
 7545     1412        297          80   TPG Internet Pty Ltd
 4755     1373        382         157   TATA Communications formerly 
17488     1364        156         121   Hathway IP Over Cable Interne
17974     1246        303          79   PT TELEKOMUNIKASI INDONESIA
 9583     1034         77         497   Sify Limited
24560     1020        303         179   Bharti Airtel Ltd., Telemedia
 4808      977       1739         267   CNCGROUP IP network: China169
18101      888        100         134   Reliance Infocom Ltd Internet
 9829      822        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     3770       3667         279   bellsouth.net, inc. 
 4323     2616       1119         393   Time Warner Telecom
 1785     1797        698         130   PaeTec Communications, Inc.
19262     1777       4833         279   Verizon Global Networks 
20115     1505       1526         647   Charter Communications 
 7018     1462       5728         935   AT&T WorldNet Services
 6478     1384        280         121   AT&T Worldnet Services 
 2386     1307        555         923   AT&T Data Communications Serv
11492     1235        231          74   Cable One 
22773     1205       2858          61   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      449       2028         390   TDC Tele Danmark
 8866      422        119          24   Bulgarian Telecommunication C
  702      404       1869         318   UUNET - Commercial IP service
 8551      402        353          46   Bezeq International
34984      381         91         184   BILISIM TELEKOM
 3320      380       7332         331   Deutsche Telekom AG
 3301      379       1688         335   TeliaNet Sweden
30890      375         80         204   Evolva Telecom
12479      374        576           5   Uni2 Autonomous System
31148      357         19          78   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
 8151     1341       2581         371   UniNet S.A. de C.V. 
10620     1332        247         150   TVCABLE BOGOTA 
28573     1182        909          88   NET Servicos de Comunicao S.A
 7303      831        441         107   Telecom Argentina Stet-France
 6503      761        223         259   AVANTEL, S.A. 
22047      559        310          15   VTR PUNTO NET S.A. 
14420      544         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      976        445          10   TEDATA
24863      712        146          44   LINKdotNET AS number
36992      641        278         167   Etisalat MISR
 3741      266        906         224   The Internet Solution 
 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
24835      174         78           9   RAYA Telecom - Egypt
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     3770       3667         279   bellsouth.net, inc. 
 4323     2616       1119         393   Time Warner Telecom
 4766     1872       9437         510   Korea Telecom (KIX)
 1785     1797        698         130   PaeTec Communications, Inc.
19262     1777       4833         279   Verizon Global Networks 
20115     1505       1526         647   Charter Communications 
 7018     1462       5728         935   AT&T WorldNet Services
 7545     1412        297          80   TPG Internet Pty Ltd
 6478     1384        280         121   AT&T Worldnet Services 
 4755     1373        382         157   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      2616        2223      Time Warner Telecom
 1785      1797        1667      PaeTec Communications, Inc.
19262      1777        1498      Verizon Global Networks 
 4766      1872        1362      Korea Telecom (KIX)
 7545      1412        1332      TPG Internet Pty Ltd
 6478      1384        1263      AT&T Worldnet Services 
17488      1364        1243      Hathway IP Over Cable Interne
 4755      1373        1216      TATA Communications formerly 
10620      1332        1182      TVCABLE BOGOTA 
17974      1246        1167      PT TELEKOMUNIKASI INDONESIA

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        7018       AT&T WorldNet Servic
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<<
46.20.224.0/20       39451     Melbourne Network Solutions c
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

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      /11:67      /12:203     
/13:420     /14:735     /15:1330    /16:11315   /17:5488    /18:9329    
/19:18494   /20:23679   /21:23911   /22:31328   /23:30531   /24:173949  
/25:983     /26:1102    /27:581     /28:153     /29:12      /30:2       
/31:0       /32:7       

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

  ASN   No of nets  Total ann.   Description
 6389     2334          3770      bellsouth.net, inc. 
 4323     1407          2616      Time Warner Telecom
 6478     1346          1384      AT&T Worldnet Services 
10620     1220          1332      TVCABLE BOGOTA 
11492     1192          1235      Cable One 
 1785     1077          1797      PaeTec Communications, Inc.
18566     1069          1088      Covad Communications 
 7011     1056          1156      Citizens Utilities 
19262      903          1777      Verizon Global Networks 
 8452      882           976      TEDATA

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

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

   1:87        2:14        4:13        8:311      12:2011     13:8      
  14:34       15:20       16:3        17:9        20:9        24:1383   
  27:389      31:1        32:61       33:12       38:695      40:97     
  41:2454     44:3        46:163      47:11       49:4        50:1      
  52:12       55:3        56:2        57:29       58:832      59:500    
  60:479      61:1111     62:1027     63:1964     64:3746     65:2336   
  66:4062     67:1850     68:1144     69:2846     70:758      71:375    
  72:1940     73:2        74:2321     75:293      76:324      77:869    
  78:698      79:445      80:1043     81:805      82:493      83:450    
  84:685      85:1035     86:431      87:689      88:322      89:1556   
  90:105      91:3107     92:427      93:1020     94:1107     95:739    
  96:389      97:223      98:639      99:32      101:3       108:64     
 109:699     110:423     111:583     112:298     113:296     114:477    
 115:606     116:1115    117:658     118:541     119:979     120:196    
 121:722     122:1589    123:917     124:1228    125:1269    128:227    
 129:158     130:170     131:557     132:274     133:20      134:207    
 135:46      136:207     137:140     138:278     139:109     140:478    
 141:197     142:348     143:386     144:500     145:54      146:429    
 147:190     148:619     149:306     150:146     151:232     152:294    
 153:174     154:3       155:369     156:169     157:333     158:113    
 159:357     160:312     161:198     162:269     163:166     164:423    
 165:349     166:470     167:418     168:678     169:154     170:716    
 171:63      172:2       173:1029    174:554     175:212     176:1      
 177:1       178:537     180:683     181:1       182:244     183:231    
 184:131     186:733     187:513     188:842     189:806     190:4133   
 192:5771    193:4738    194:3430    195:2828    196:1205    198:3544   
 199:3615    200:5421    201:1582    202:8138    203:8299    204:4033   
 205:2326    206:2566    207:3036    208:3899    209:3478    210:2554   
 211:1282    212:1780    213:1706    214:678     215:66      216:4809   
 217:1561    218:522     219:401     220:1177    221:429     222:342    
 223:53     

End of report



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