[SANOG] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri May 25 19:03:50 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 26 May, 2012

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

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

BGP routing table entries examined:                              411471
    Prefixes after maximum aggregation:                          174357
    Deaggregation factor:                                          2.36
    Unique aggregates announced to Internet:                     200214
Total ASes present in the Internet Routing Table:                 41122
    Prefixes per ASN:                                             10.01
Origin-only ASes present in the Internet Routing Table:           33227
Origin ASes announcing only one prefix:                           15654
Transit ASes present in the Internet Routing Table:                5503
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:                                      29
    Max AS path prepend of ASN ( 2115)                               25
Prefixes from unregistered ASNs in the Routing Table:               385
    Unregistered ASNs in the Routing Table:                         134
Number of 32-bit ASNs allocated by the RIRs:                       2738
Number of 32-bit ASNs visible in the Routing Table:                2392
Prefixes from 32-bit ASNs in the Routing Table:                    6078
Special use prefixes present in the Routing Table:                    2
Prefixes being announced from unallocated address space:            116
Number of addresses announced to Internet:                   2553429168
    Equivalent to 152 /8s, 50 /16s and 60 /24s
    Percentage of available address space announced:               68.9
    Percentage of allocated address space announced:               69.0
    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:      175392

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

Prefixes being announced by APNIC Region ASes:                   100470
    Total APNIC prefixes after maximum aggregation:               32508
    APNIC Deaggregation factor:                                    3.09
Prefixes being announced from the APNIC address blocks:           96903
    Unique aggregates announced from the APNIC address blocks:    40056
APNIC Region origin ASes present in the Internet Routing Table:    4698
    APNIC Prefixes per ASN:                                       20.63
APNIC Region origin ASes announcing only one prefix:               1245
APNIC Region transit ASes present in the Internet Routing Table:    732
Average APNIC Region AS path length visible:                        4.7
    Max APNIC Region AS path length visible:                         25
Number of APNIC region 32-bit ASNs visible in the Routing Table:    217
Number of APNIC addresses announced to Internet:              646675008
    Equivalent to 38 /8s, 139 /16s and 122 /24s
    Percentage of available APNIC address space announced:         82.0

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:                    151368
    Total ARIN prefixes after maximum aggregation:                76847
    ARIN Deaggregation factor:                                     1.97
Prefixes being announced from the ARIN address blocks:           121901
    Unique aggregates announced from the ARIN address blocks:     51066
ARIN Region origin ASes present in the Internet Routing Table:    15130
    ARIN Prefixes per ASN:                                         8.06
ARIN Region origin ASes announcing only one prefix:                5742
ARIN Region transit ASes present in the Internet Routing Table:    1602
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:               812317120
    Equivalent to 48 /8s, 106 /16s and 249 /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:                    102332
    Total RIPE prefixes after maximum aggregation:                54493
    RIPE Deaggregation factor:                                     1.88
Prefixes being announced from the RIPE address blocks:            94402
    Unique aggregates announced from the RIPE address blocks:     59288
RIPE Region origin ASes present in the Internet Routing Table:    16590
    RIPE Prefixes per ASN:                                         5.69
RIPE Region origin ASes announcing only one prefix:                8060
RIPE Region transit ASes present in the Internet Routing Table:    2655
Average RIPE Region AS path length visible:                         5.0
    Max RIPE Region AS path length visible:                          29
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1591
Number of RIPE addresses announced to Internet:               514347400
    Equivalent to 30 /8s, 168 /16s and 81 /24s
    Percentage of available RIPE address space announced:          82.9

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:                   41693
    Total LACNIC prefixes after maximum aggregation:               8266
    LACNIC Deaggregation factor:                                   5.04
Prefixes being announced from the LACNIC address blocks:          41798
    Unique aggregates announced from the LACNIC address blocks:   20439
LACNIC Region origin ASes present in the Internet Routing Table:   1597
    LACNIC Prefixes per ASN:                                      26.17
LACNIC Region origin ASes announcing only one prefix:               440
LACNIC Region transit ASes present in the Internet Routing Table:   308
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        21
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   563
Number of LACNIC addresses announced to Internet:             101399432
    Equivalent to 6 /8s, 11 /16s and 59 /24s
    Percentage of available LACNIC address space announced:        67.2

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:                   9337
    Total AfriNIC prefixes after maximum aggregation:              2175
    AfriNIC Deaggregation factor:                                  4.29
Prefixes being announced from the AfriNIC address blocks:          7389
    Unique aggregates announced from the AfriNIC address blocks:   2197
AfriNIC Region origin ASes present in the Internet Routing Table:   541
    AfriNIC Prefixes per ASN:                                     13.66
AfriNIC Region origin ASes announcing only one prefix:              167
AfriNIC Region transit ASes present in the Internet Routing Table:  119
Average AfriNIC Region AS path length visible:                      4.5
    Max AfriNIC Region AS path length visible:                       25
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    4
Number of AfriNIC addresses announced to Internet:             31746304
    Equivalent to 1 /8s, 228 /16s and 105 /24s
    Percentage of available AfriNIC address space announced:       47.3

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     2635      11114        1120   Korea Telecom (KIX)
17974     1925        530          80   PT TELEKOMUNIKASI INDONESIA
 7545     1671        301          87   TPG Internet Pty Ltd
 4755     1577        385         155   TATA Communications formerly 
 9829     1298       1085          28   BSNL National Internet Backbo
 7552     1173       1062          11   Vietel Corporation
 9583     1156         87         503   Sify Limited
 4808     1105       2050         317   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     3413       3807         193   bellsouth.net, inc. 
 7029     3335        986         159   Windstream Communications Inc
18566     2093        382         181   Covad Communications 
 1785     1909        681         131   PaeTec Communications, Inc.
20115     1639       1566         616   Charter Communications 
22773     1608       2911         121   Cox Communications, Inc.
 4323     1566       1040         379   Time Warner Telecom
30036     1401        260         760   Mediacom Communications Corp 
 7018     1224      10031         821   AT&T WorldNet Services
 7011     1188        317         681   Citizens Utilities 

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     1718        544          16   Corbina telecom
 2118     1312         97          14   EUnet/RELCOM Autonomous Syste
34984      697        188         172   BILISIM TELEKOM
12479      692        678          70   Uni2 Autonomous System
31148      684         37           9   FreeNet ISP
20940      669        221         522   Akamai Technologies European 
 6830      655       2215         426   UPC Distribution Services
 8551      577        362          71   Bezeq International
 3320      489       8442         402   Deutsche Telekom AG
 3292      471       2108         407   TDC Tele Danmark

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     1917        340         202   TVCABLE BOGOTA 
28573     1891       1171          59   NET Servicos de Comunicao S.A
 6503     1539        418          65   AVANTEL, S.A. 
 8151     1483       3054         337   UniNet S.A. de C.V. 
 7303     1435        901         191   Telecom Argentina Stet-France
26615      902        760          32   Tim Brasil S.A.
27947      689         73          95   Telconet S.A
11172      642         91          73   Servicios Alestra S.A de C.V 
 3816      584        247          89   Empresa Nacional de Telecomun
22047      582        326          15   VTR PUNTO NET 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     1367        957          12   TEDATA
24863      846        274          35   LINKdotNET AS number
 6713      496        649          18   Itissalat Al-MAGHRIB
24835      321         80           8   RAYA Telecom - Egypt
 3741      262        905         223   The Internet Solution 
33776      205         12          21   Starcomms Nigeria Limited
12258      197         28          62   Vodacom Internet Company 
16637      171        666          83   MTN Network Solutions
15706      164         32           6   Sudatel Internet Exchange Aut
29571      157         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     3413       3807         193   bellsouth.net, inc. 
 7029     3335        986         159   Windstream Communications Inc
 4766     2635      11114        1120   Korea Telecom (KIX)
18566     2093        382         181   Covad Communications 
17974     1925        530          80   PT TELEKOMUNIKASI INDONESIA
10620     1917        340         202   TVCABLE BOGOTA 
 1785     1909        681         131   PaeTec Communications, Inc.
28573     1891       1171          59   NET Servicos de Comunicao S.A
 8402     1718        544          16   Corbina telecom
 7545     1671        301          87   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      3335        3176      Windstream Communications Inc
18566      2093        1912      Covad Communications 
17974      1925        1845      PT TELEKOMUNIKASI INDONESIA
28573      1891        1832      NET Servicos de Comunicao S.A
 1785      1909        1778      PaeTec Communications, Inc.
10620      1917        1715      TVCABLE BOGOTA 
 8402      1718        1702      Corbina telecom
 7545      1671        1584      TPG Internet Pty Ltd
 4766      2635        1515      Korea Telecom (KIX)
22773      1608        1487      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
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
32873   UNALLOCATED  12.46.102.0/24       10912       InterNAP Network Ser
14764   UNALLOCATED  12.108.237.0/24       7018       AT&T WorldNet Servic

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
5.44.40.0/21         23456     32-bit ASN transition
5.44.96.0/22         31342     AS from Clanotopia IT-Service
5.44.100.0/22        31342     AS from Clanotopia IT-Service
5.44.104.0/22        29066     velia.net
5.44.184.0/21        23456     32-bit ASN transition
5.44.216.0/21        51109     CAMELHOST SIA
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

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     
/13:462     /14:832     /15:1502    /16:12299   /17:6299    /18:10615   
/19:20778   /20:29474   /21:30834   /22:40476   /23:38421   /24:215321  
/25:1229    /26:1457    /27:821     /28:169     /29:67      /30:17      
/31:0       /32:22      

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

  ASN   No of nets  Total ann.   Description
 7029     2995          3335      Windstream Communications Inc
 6389     2132          3413      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
10620     1734          1917      TVCABLE BOGOTA 
 8402     1696          1718      Corbina telecom
30036     1342          1401      Mediacom Communications Corp 
 6503     1293          1539      AVANTEL, S.A. 
 8452     1169          1367      TEDATA
11492     1149          1186      Cable One 
 7011     1073          1188      Citizens Utilities 

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

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

   1:547       2:744       4:13        5:35        6:3         8:420    
  12:2006     13:1        14:618      15:12       16:3        17:5      
  20:23       23:173      24:1773     27:1319     31:1025     32:57     
  33:2        34:2        36:8        37:623      38:807      40:121    
  41:3203     42:137      44:3        46:1415     47:3        49:452    
  50:548      52:13       54:12       55:9        56:3        57:33     
  58:961      59:496      60:254      61:1217     62:1003     63:2036   
  64:4237     65:2249     66:4480     67:2008     68:1160     69:3196   
  70:933      71:494      72:1824     74:2599     75:493      76:328    
  77:952      78:984      79:492      80:1222     81:936      82:659    
  83:543      84:491      85:1221     86:438      87:907      88:340    
  89:1718     90:289      91:4854     92:550      93:1333     94:1517   
  95:1171     96:368      97:313      98:860      99:38      100:7      
 101:192     103:1105    106:104     107:185     108:307     109:1342   
 110:753     111:923     112:409     113:591     114:628     115:838    
 116:936     117:724     118:906     119:1236    120:357     121:698    
 122:1663    123:1103    124:1379    125:1254    128:554     129:195    
 130:245     131:631     132:287     133:22      134:248     135:59     
 136:214     137:187     138:359     139:186     140:496     141:243    
 142:417     143:555     144:535     145:70      146:506     147:286    
 148:775     149:298     150:191     151:177     152:468     153:172    
 154:12      155:401     156:223     157:381     158:186     159:556    
 160:340     161:265     162:345     163:190     164:606     165:397    
 166:593     167:466     168:862     169:126     170:875     171:131    
 172:4       173:1746    174:578     175:431     176:526     177:797    
 178:1380    180:1211    181:85      182:1005    183:226     184:497    
 185:1       186:2284    187:1098    188:1276    189:1804    190:5536   
 192:5996    193:5562    194:4526    195:3418    196:1208    197:148    
 198:3659    199:4650    200:5857    201:1940    202:8585    203:8607   
 204:4340    205:2550    206:2763    207:2802    208:4059    209:3629   
 210:2766    211:1534    212:2031    213:1934    214:863     215:103    
 216:5096    217:1550    218:553     219:314     220:1240    221:563    
 222:325     223:359    

End of report


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