[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 11 18:44:38 UTC 2012


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,
TRNOG, 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 <pfsinoz at gmail.com>.

Routing Table Report   04:00 +10GMT Sat 12 May, 2012

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

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

BGP routing table entries examined:                              407563
    Prefixes after maximum aggregation:                          173478
    Deaggregation factor:                                          2.35
    Unique aggregates announced to Internet:                     199037
Total ASes present in the Internet Routing Table:                 40961
    Prefixes per ASN:                                              9.95
Origin-only ASes present in the Internet Routing Table:           33155
Origin ASes announcing only one prefix:                           15644
Transit ASes present in the Internet Routing Table:                5484
Transit-only ASes present in the Internet Routing Table:            137
Average AS path length visible in the Internet Routing Table:       4.5
    Max AS path length visible:                                      64
    Max AS path prepend of ASN ( 9902)                               56
Prefixes from unregistered ASNs in the Routing Table:               374
    Unregistered ASNs in the Routing Table:                         130
Number of 32-bit ASNs allocated by the RIRs:                       2687
Number of 32-bit ASNs visible in the Routing Table:                2322
Prefixes from 32-bit ASNs in the Routing Table:                    5860
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            108
Number of addresses announced to Internet:                   2547853104
    Equivalent to 151 /8s, 221 /16s and 39 /24s
    Percentage of available address space announced:               68.7
    Percentage of allocated address space announced:               68.8
    Percentage of available address space allocated:               99.9
    Percentage of address space in use by end-sites:               92.6
Total number of prefixes smaller than registry allocations:      173961

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

Prefixes being announced by APNIC Region ASes:                   100290
    Total APNIC prefixes after maximum aggregation:               32360
    APNIC Deaggregation factor:                                    3.10
Prefixes being announced from the APNIC address blocks:           96740
    Unique aggregates announced from the APNIC address blocks:    39871
APNIC Region origin ASes present in the Internet Routing Table:    4683
    APNIC Prefixes per ASN:                                       20.66
APNIC Region origin ASes announcing only one prefix:               1234
APNIC Region transit ASes present in the Internet Routing Table:    729
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         20
Number of APNIC region 32-bit ASNs visible in the Routing Table:    203
Number of APNIC addresses announced to Internet:              644595328
    Equivalent to 38 /8s, 107 /16s and 190 /24s
    Percentage of available APNIC address space announced:         81.7

APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 131072-132095, 132096-133119
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, 103/8,
                       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:                    150584
    Total ARIN prefixes after maximum aggregation:                76455
    ARIN Deaggregation factor:                                     1.97
Prefixes being announced from the ARIN address blocks:           121585
    Unique aggregates announced from the ARIN address blocks:     50780
ARIN Region origin ASes present in the Internet Routing Table:    15088
    ARIN Prefixes per ASN:                                         8.06
ARIN Region origin ASes announcing only one prefix:                5739
ARIN Region transit ASes present in the Internet Routing Table:    1596
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          24
Number of ARIN region 32-bit ASNs visible in the Routing Table:      17
Number of ARIN addresses announced to Internet:               812031680
    Equivalent to 48 /8s, 102 /16s and 158 /24s
    Percentage of available ARIN address space announced:          64.8

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,  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,  45/8,  47/8,  48/8,  50/8,  52/8,
                        53/8,  54/8,  55/8,  56/8,  57/8,  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, 104/8, 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:                    100227
    Total RIPE prefixes after maximum aggregation:                54165
    RIPE Deaggregation factor:                                     1.85
Prefixes being announced from the RIPE address blocks:            92408
    Unique aggregates announced from the RIPE address blocks:     58733
RIPE Region origin ASes present in the Internet Routing Table:    16564
    RIPE Prefixes per ASN:                                         5.58
RIPE Region origin ASes announcing only one prefix:                8064
RIPE Region transit ASes present in the Internet Routing Table:    2649
Average RIPE Region AS path length visible:                         5.0
    Max RIPE Region AS path length visible:                          30
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1551
Number of RIPE addresses announced to Internet:               512885448
    Equivalent to 30 /8s, 146 /16s and 2 /24s
    Percentage of available RIPE address space announced:          82.6

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, 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, 185/8, 193/8, 194/8, 195/8, 212/8,
                       213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                   41419
    Total LACNIC prefixes after maximum aggregation:               8278
    LACNIC Deaggregation factor:                                   5.00
Prefixes being announced from the LACNIC address blocks:          41394
    Unique aggregates announced from the LACNIC address blocks:   20500
LACNIC Region origin ASes present in the Internet Routing Table:   1598
    LACNIC Prefixes per ASN:                                      25.90
LACNIC Region origin ASes announcing only one prefix:               441
LACNIC Region transit ASes present in the Internet Routing Table:   300
Average LACNIC Region AS path length visible:                       4.5
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   546
Number of LACNIC addresses announced to Internet:             100238984
    Equivalent to 5 /8s, 249 /16s and 134 /24s
    Percentage of available LACNIC address space announced:        66.4

LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       262144-263167 plus ERX transfers
LACNIC Address Blocks  177/8, 179/8, 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:                   8993
    Total AfriNIC prefixes after maximum aggregation:              2154
    AfriNIC Deaggregation factor:                                  4.18
Prefixes being announced from the AfriNIC address blocks:          7041
    Unique aggregates announced from the AfriNIC address blocks:   2219
AfriNIC Region origin ASes present in the Internet Routing Table:   532
    AfriNIC Prefixes per ASN:                                     13.23
AfriNIC Region origin ASes announcing only one prefix:              166
AfriNIC Region transit ASes present in the Internet Routing Table:  122
Average AfriNIC Region AS path length visible:                      4.6
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    5
Number of AfriNIC addresses announced to Internet:             31782656
    Equivalent to 1 /8s, 228 /16s and 247 /24s
    Percentage of available AfriNIC address space announced:       47.4

AfriNIC AS Blocks      36864-37887, 327680-328703 & ERX transfers
AfriNIC Address Blocks  41/8, 102/8, 105/8, 197/8,

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

  ASN   No of nets  /20 equiv  MaxAgg  Description
 4766     2540      11114        1040   Korea Telecom (KIX)
17974     1869        510          73   PT TELEKOMUNIKASI INDONESIA
 7545     1678        301          85   TPG Internet Pty Ltd
 4755     1593        388         162   TATA Communications formerly 
 9829     1283       1069          30   BSNL National Internet Backbo
 7552     1164       1062          11   Vietel Corporation
 9583     1156         86         500   Sify Limited
 4808     1104       2049         315   CNCGROUP IP network: China169
24560     1027        385         167   Bharti Airtel Ltd., Telemedia
 9498      965        291          64   BHARTI Airtel Ltd.

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     3415       3807         193   bellsouth.net, inc. 
 7029     3376        986         159   Windstream Communications Inc
18566     2093        382         179   Covad Communications 
 1785     1903        681         131   PaeTec Communications, Inc.
20115     1638       1566         620   Charter Communications 
 4323     1606       1044         383   Time Warner Telecom
22773     1597       2911         115   Cox Communications, Inc.
30036     1407        262         752   Mediacom Communications Corp 
 7018     1251      10038         820   AT&T WorldNet Services
11492     1186        216         364   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
 8402     1728        544          16   Corbina telecom
34984      693        188         172   BILISIM TELEKOM
31148      685         37           9   FreeNet ISP
12479      679        671          69   Uni2 Autonomous System
20940      657        216         511   Akamai Technologies European 
 6830      656       2215         426   UPC Distribution Services
 8551      573        360          80   Bezeq International
 3320      485       8442         401   Deutsche Telekom AG
 3292      473       2108         407   TDC Tele Danmark
 8866      436        134          27   Bulgarian Telecommunication C

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     1869        334         175   TVCABLE BOGOTA 
28573     1849       1137          58   NET Servicos de Comunicao S.A
 6503     1524        418          66   AVANTEL, S.A. 
 8151     1480       3003         342   UniNet S.A. de C.V. 
 7303     1371        837         188   Telecom Argentina Stet-France
26615      903        761          33   Tim Brasil S.A.
27947      693         74          98   Telconet S.A
11172      642         91          73   Servicios Alestra S.A de C.V 
22047      582        326          15   VTR PUNTO NET S.A. 
 3816      576        243          98   Empresa Nacional de Telecomun

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     1307        958          13   TEDATA
24863      845        274          35   LINKdotNET AS number
 6713      496        649          18   Itissalat Al-MAGHRIB
 3741      263        921         223   The Internet Solution 
12258      197         28          62   Vodacom Internet Company 
33776      197         12          21   Starcomms Nigeria Limited
24835      179         80           8   RAYA Telecom - Egypt
16637      170        666          83   MTN Network Solutions
15706      169         32           6   Sudatel Internet Exchange Aut
29571      158         15          16   Ci Telecom Autonomous system 

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     3415       3807         193   bellsouth.net, inc. 
 7029     3376        986         159   Windstream Communications Inc
 4766     2540      11114        1040   Korea Telecom (KIX)
18566     2093        382         179   Covad Communications 
 1785     1903        681         131   PaeTec Communications, Inc.
10620     1869        334         175   TVCABLE BOGOTA 
17974     1869        510          73   PT TELEKOMUNIKASI INDONESIA
28573     1849       1137          58   NET Servicos de Comunicao S.A
 8402     1728        544          16   Corbina telecom
 7545     1678        301          85   TPG Internet Pty Ltd

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

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

  ASN   No of nets  Net Savings Description
 7029      3376        3217      Windstream Communications Inc
18566      2093        1914      Covad Communications 
17974      1869        1796      PT TELEKOMUNIKASI INDONESIA
28573      1849        1791      NET Servicos de Comunicao S.A
 1785      1903        1772      PaeTec Communications, Inc.
 8402      1728        1712      Corbina telecom
10620      1869        1694      TVCABLE BOGOTA 
 7545      1678        1593      TPG Internet Pty Ltd
 4766      2540        1500      Korea Telecom (KIX)
22773      1597        1482      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
15132   UNALLOCATED  12.9.150.0/24         7018       AT&T WorldNet Servic
32567   UNALLOCATED  12.14.170.0/24        4323       Time Warner Telecom
32567   UNALLOCATED  12.25.107.0/24        4323       Time Warner Telecom
25639   UNALLOCATED  12.41.169.0/24        7018       AT&T WorldNet Servic
13317   UNALLOCATED  12.44.10.0/24         7018       AT&T WorldNet Servic
23502   UNALLOCATED  12.44.44.0/24         7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.103.0/24        7018       AT&T WorldNet Servic
17300   UNALLOCATED  12.45.110.0/24         701       UUNET Technologies, 
16476   UNALLOCATED  12.46.27.0/24         7018       AT&T WorldNet Servic
32873   UNALLOCATED  12.46.100.0/23       10912       InterNAP Network Ser

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

Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------

Prefix             Origin AS  Description
128.0.0.0/21         12654     RIPE NCC RIS Project
128.0.24.0/24        12654     RIPE NCC RIS Project

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

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

Network            Origin AS  Description
5.32.168.0/21        15836     ARAX Autonomous System
14.192.0.0/22        45464     Room 201, TGU Bldg
14.192.4.0/22        45464     Room 201, TGU Bldg
14.192.8.0/22        45464     Room 201, TGU Bldg
14.192.12.0/22       45464     Room 201, TGU Bldg
14.192.16.0/22       45464     Room 201, TGU Bldg
14.192.20.0/22       45464     Room 201, TGU Bldg
14.192.24.0/22       45464     Room 201, TGU Bldg
14.192.28.0/22       45464     Room 201, TGU Bldg
27.112.114.0/24      23884     Proimage Engineering and Comm

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       /9:12      /10:29      /11:81      /12:235     
/13:460     /14:831     /15:1496    /16:12241   /17:6253    /18:10573   
/19:20706   /20:29319   /21:30533   /22:39962   /23:38226   /24:212903  
/25:1197    /26:1433    /27:787     /28:164     /29:66      /30:17      
/31:0       /32:20      

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

  ASN   No of nets  Total ann.   Description
 7029     3033          3376      Windstream Communications Inc
 6389     2134          3415      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
10620     1715          1869      TVCABLE BOGOTA 
 8402     1706          1728      Corbina telecom
30036     1348          1407      Mediacom Communications Corp 
 6503     1282          1524      AVANTEL, S.A. 
11492     1149          1186      Cable One 
 8452     1108          1307      TEDATA
 7011     1069          1184      Citizens Utilities 

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

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

   1:543       2:704       4:14        5:2         6:3         8:411    
  12:2001     13:1        14:610      15:12       16:3        17:5      
  20:23       23:166      24:1769     27:1298     31:953      32:57     
  33:2        34:2        36:8        37:440      38:808      40:120    
  41:3115     42:136      44:3        46:1417     47:3        49:402    
  50:546      52:13       54:10       55:13       56:3        57:32     
  58:961      59:509      60:255      61:1280     62:986      63:2056   
  64:4181     65:2241     66:4468     67:2019     68:1166     69:3209   
  70:905      71:484      72:1818     74:2592     75:492      76:319    
  77:948      78:985      79:489      80:1215     81:909      82:667    
  83:554      84:487      85:1224     86:438      87:918      88:334    
  89:1694     90:292      91:4810     92:539      93:1469     94:1519   
  95:903      96:369      97:316      98:873      99:38      100:7      
 101:186     103:1059    106:103     107:187     108:284     109:1337   
 110:769     111:915     112:409     113:605     114:631     115:898    
 116:938     117:715     118:911     119:1236    120:352     121:805    
 122:1668    123:1102    124:1382    125:1246    128:561     129:197    
 130:252     131:629     132:179     133:22      134:247     135:62     
 136:214     137:178     138:334     139:183     140:493     141:243    
 142:413     143:432     144:526     145:70      146:497     147:282    
 148:772     149:306     150:157     151:176     152:466     153:172    
 154:12      155:400     156:219     157:381     158:179     159:545    
 160:338     161:260     162:347     163:191     164:588     165:386    
 166:572     167:467     168:859     169:126     170:770     171:131    
 172:2       173:1738    174:583     175:432     176:696     177:735    
 178:1361    180:1208    181:82      182:974     183:290     184:486    
 185:1       186:2282    187:1074    188:1264    189:1791    190:5572   
 192:6002    193:5288    194:3807    195:3217    196:1283    197:135    
 198:3640    199:4605    200:5855    201:1936    202:8565    203:8595   
 204:4327    205:2526    206:2763    207:2798    208:4078    209:3616   
 210:2752    211:1489    212:2026    213:1935    214:851     215:103    
 216:5104    217:1546    218:544     219:338     220:1231    221:558    
 222:322     223:339    

End of report



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