[lacnog] Weekly Routing Table Report

Routing Analysis Role Account cscora en apnic.net
Vie Nov 18 17:19:54 BRST 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 en lists.apnic.net

For historical data, please see http://thyme.rand.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz en gmail.com>.

Routing Table Report   04:00 +10GMT Sat 19 Nov, 2011

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

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

BGP routing table entries examined:                              382518
    Prefixes after maximum aggregation:                          166913
    Deaggregation factor:                                          2.29
    Unique aggregates announced to Internet:                     187922
Total ASes present in the Internet Routing Table:                 39344
    Prefixes per ASN:                                              9.72
Origin-only ASes present in the Internet Routing Table:           32426
Origin ASes announcing only one prefix:                           15480
Transit ASes present in the Internet Routing Table:                5275
Transit-only ASes present in the Internet Routing Table:            133
Average AS path length visible in the Internet Routing Table:       4.4
    Max AS path length visible:                                      33
    Max AS path prepend of ASN (48687)                               24
Prefixes from unregistered ASNs in the Routing Table:              1738
    Unregistered ASNs in the Routing Table:                         898
Number of 32-bit ASNs allocated by the RIRs:                       1966
Number of 32-bit ASNs visible in the Routing Table:                1643
Prefixes from 32-bit ASNs in the Routing Table:                    3811
Special use prefixes present in the Routing Table:                    3
Prefixes being announced from unallocated address space:             85
Number of addresses announced to Internet:                   2491183488
    Equivalent to 148 /8s, 124 /16s and 113 /24s
    Percentage of available address space announced:               67.2
    Percentage of allocated address space announced:               67.2
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               91.6
Total number of prefixes smaller than registry allocations:      161662

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

Prefixes being announced by APNIC Region ASes:                    95270
    Total APNIC prefixes after maximum aggregation:               31163
    APNIC Deaggregation factor:                                    3.06
Prefixes being announced from the APNIC address blocks:           91712
    Unique aggregates announced from the APNIC address blocks:    38427
APNIC Region origin ASes present in the Internet Routing Table:    4610
    APNIC Prefixes per ASN:                                       19.89
APNIC Region origin ASes announcing only one prefix:               1269
APNIC Region transit ASes present in the Internet Routing Table:    709
Average APNIC Region AS path length visible:                        4.5
    Max APNIC Region AS path length visible:                         18
Number of APNIC region 32-bit ASNs visible in the Routing Table:    110
Number of APNIC addresses announced to Internet:              630281568
    Equivalent to 37 /8s, 145 /16s and 85 /24s
    Percentage of available APNIC address space announced:         79.9

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:                    145957
    Total ARIN prefixes after maximum aggregation:                74487
    ARIN Deaggregation factor:                                     1.96
Prefixes being announced from the ARIN address blocks:           118097
    Unique aggregates announced from the ARIN address blocks:     48616
ARIN Region origin ASes present in the Internet Routing Table:    14749
    ARIN Prefixes per ASN:                                         8.01
ARIN Region origin ASes announcing only one prefix:                5633
ARIN Region transit ASes present in the Internet Routing Table:    1567
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          25
Number of ARIN region 32-bit ASNs visible in the Routing Table:      13
Number of ARIN addresses announced to Internet:               803282880
    Equivalent to 47 /8s, 225 /16s and 31 /24s
    Percentage of available ARIN address space announced:          63.8

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:                     92363
    Total RIPE prefixes after maximum aggregation:                51229
    RIPE Deaggregation factor:                                     1.80
Prefixes being announced from the RIPE address blocks:            84633
    Unique aggregates announced from the RIPE address blocks:     54540
RIPE Region origin ASes present in the Internet Routing Table:    16120
    RIPE Prefixes per ASN:                                         5.25
RIPE Region origin ASes announcing only one prefix:                7983
RIPE Region transit ASes present in the Internet Routing Table:    2536
Average RIPE Region AS path length visible:                         4.7
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:    1143
Number of RIPE addresses announced to Internet:               492243904
    Equivalent to 29 /8s, 87 /16s and 11 /24s
    Percentage of available RIPE address space announced:          79.3

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:                   36318
    Total LACNIC prefixes after maximum aggregation:               7909
    LACNIC Deaggregation factor:                                   4.59
Prefixes being announced from the LACNIC address blocks:          35776
    Unique aggregates announced from the LACNIC address blocks:   18643
LACNIC Region origin ASes present in the Internet Routing Table:   1547
    LACNIC Prefixes per ASN:                                      23.13
LACNIC Region origin ASes announcing only one prefix:               439
LACNIC Region transit ASes present in the Internet Routing Table:   283
Average LACNIC Region AS path length visible:                       4.5
    Max LACNIC Region AS path length visible:                        18
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   373
Number of LACNIC addresses announced to Internet:              93166208
    Equivalent to 5 /8s, 141 /16s and 154 /24s
    Percentage of available LACNIC address space announced:        61.7

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:                   8616
    Total AfriNIC prefixes after maximum aggregation:              2052
    AfriNIC Deaggregation factor:                                  4.20
Prefixes being announced from the AfriNIC address blocks:          6675
    Unique aggregates announced from the AfriNIC address blocks:   2049
AfriNIC Region origin ASes present in the Internet Routing Table:   499
    AfriNIC Prefixes per ASN:                                     13.38
AfriNIC Region origin ASes announcing only one prefix:              156
AfriNIC Region transit ASes present in the Internet Routing Table:  108
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:    4
Number of AfriNIC addresses announced to Internet:             27745280
    Equivalent to 1 /8s, 167 /16s and 92 /24s
    Percentage of available AfriNIC address space announced:       41.3

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     2506      11072         963   Korea Telecom (KIX)
17974     1647        511          36   PT TELEKOMUNIKASI INDONESIA
 7545     1627        303          87   TPG Internet Pty Ltd
 4755     1528        378         169   TATA Communications formerly 
 7552     1394       1064           7   Vietel Corporation
 9829     1166        989          28   BSNL National Internet Backbo
 4808     1097       2073         310   CNCGROUP IP network: China169
 9583     1094         80         494   Sify Limited
24560      965        343         218   Bharti Airtel Ltd., Telemedia
18101      952        119         148   Reliance Infocom Ltd Internet

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     3543       3814         219   bellsouth.net, inc. 
 7029     2906       1016         199   Windstream Communications Inc
18566     2093        383         177   Covad Communications 
 1785     1848        680         121   PaeTec Communications, Inc.
 4323     1613       1077         387   Time Warner Telecom
20115     1596       1546         624   Charter Communications 
22773     1500       2909         103   Cox Communications, Inc.
30036     1428        257         670   Mediacom Communications Corp 
19262     1387       4683         401   Verizon Global Networks 
 7018     1312       7029         860   AT&T WorldNet Services

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     1548        416          14   Corbina telecom
 6830      646       1927         411   UPC Distribution Services
34984      601        112         188   BILISIM TELEKOM
20940      553        182         435   Akamai Technologies European 
 3320      512       8168         389   Deutsche Telekom AG
12479      484        596           9   Uni2 Autonomous System
 3292      480       2106         408   TDC Tele Danmark
 8866      462        133          26   Bulgarian Telecommunication C
 8551      415        366          45   Bezeq International
31148      409         22         114   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     1706        316         157   TVCABLE BOGOTA 
28573     1500       1044          70   NET Servicos de Comunicao S.A
 8151     1448       2972         345   UniNet S.A. de C.V. 
 7303     1238        751         173   Telecom Argentina Stet-France
27947      602         72          86   Telconet S.A
22047      580        322          17   VTR PUNTO NET S.A. 
 6503      557        434          68   AVANTEL, S.A. 
 7738      553       1050          31   Telecomunicacoes da Bahia S.A
 3816      540        234          96   Empresa Nacional de Telecomun
11172      529         85          95   Servicios Alestra S.A de C.V 

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
24863      778        146          36   LINKdotNET AS number
 8452      685        446          12   TEDATA
15475      444         74           8   Nile Online
36992      283        415          21   Etisalat MISR
 3741      281        939         230   The Internet Solution 
15706      242         32           6   Sudatel Internet Exchange Aut
 6713      235        519          14   Itissalat Al-MAGHRIB
29571      218         17          13   Ci Telecom Autonomous system 
33776      212         13          14   Starcomms Nigeria Limited
12258      196         28          57   Vodacom Internet Company 

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     3543       3814         219   bellsouth.net, inc. 
 7029     2906       1016         199   Windstream Communications Inc
 4766     2506      11072         963   Korea Telecom (KIX)
18566     2093        383         177   Covad Communications 
 1785     1848        680         121   PaeTec Communications, Inc.
10620     1706        316         157   TVCABLE BOGOTA 
17974     1647        511          36   PT TELEKOMUNIKASI INDONESIA
 7545     1627        303          87   TPG Internet Pty Ltd
 4323     1613       1077         387   Time Warner Telecom
20115     1596       1546         624   Charter Communications 

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      2906        2707      Windstream Communications Inc
18566      2093        1916      Covad Communications 
 1785      1848        1727      PaeTec Communications, Inc.
17974      1647        1611      PT TELEKOMUNIKASI INDONESIA
10620      1706        1549      TVCABLE BOGOTA 
 4766      2506        1543      Korea Telecom (KIX)
 7545      1627        1540      TPG Internet Pty Ltd
 8402      1548        1534      Corbina telecom
28573      1500        1430      NET Servicos de Comunicao S.A
22773      1500        1397      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
128.0.0.0/16         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
24.225.128.0/18      36377     Comcast Telecommunications, I
24.225.192.0/23      36377     Comcast Telecommunications, I
24.225.192.0/18      36377     Comcast Telecommunications, I
24.225.224.0/21      36377     Comcast Telecommunications, I
24.225.237.0/24      36377     Comcast Telecommunications, I
24.225.248.0/21      36377     Comcast Telecommunications, I
41.222.79.0/24       37345     MEDALLION Communications
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 

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      /10:27      /11:81      /12:236     
/13:465     /14:807     /15:1426    /16:12011   /17:6087    /18:10125   
/19:20002   /20:27673   /21:27853   /22:37927   /23:35487   /24:198837  
/25:1153    /26:1361    /27:758     /28:162     /29:4       /30:0       
/31:0       /32:5       

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

  ASN   No of nets  Total ann.   Description
 7029     2535          2906      Windstream Communications Inc
 6389     2185          3543      bellsouth.net, inc. 
18566     2042          2093      Covad Communications 
10620     1601          1706      TVCABLE BOGOTA 
 8402     1524          1548      Corbina telecom
30036     1388          1428      Mediacom Communications Corp 
11492     1117          1154      Cable One 
 1785     1058          1848      PaeTec Communications, Inc.
 7011     1050          1167      Citizens Utilities 
22773      960          1500      Cox Communications, Inc.

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

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

   1:411       2:487       4:15        5:1         6:3         8:355    
  12:1959     13:1        14:551      15:11       16:3        17:7      
  20:9        23:63       24:1688     27:1027     31:697      32:65     
  33:2        34:2        36:4        38:762      39:1        40:109    
  41:2689     42:61       43:1        44:3        46:1051     47:3      
  49:295      50:455      52:13       55:8        56:2        57:49     
  58:927      59:479      60:360      61:1143     62:1095     63:1965   
  64:4075     65:2301     66:4334     67:2000     68:1170     69:3146   
  70:904      71:384      72:1816     74:2640     75:429      76:320    
  77:892      78:891      79:439      80:1123     81:838      82:513    
  83:518      84:622      85:1150     86:405      87:907      88:357    
  89:1597     90:235      91:4274     92:539      93:1446     94:1306   
  95:1115     96:428      97:285      98:805      99:37      101:240    
 103:489     106:1       107:94      108:81      109:1188    110:674    
 111:805     112:363     113:497     114:595     115:715     116:879    
 117:720     118:894     119:1271    120:353     121:670     122:1576   
 123:1028    124:1367    125:1352    128:247     129:184     130:176    
 131:630     132:155     133:21      134:228     135:54      136:212    
 137:146     138:285     139:122     140:492     141:251     142:389    
 143:400     144:489     145:65      146:470     147:219     148:632    
 149:263     150:161     151:192     152:449     153:172     154:7      
 155:390     156:208     157:358     158:158     159:494     160:330    
 161:215     162:368     163:175     164:511     165:369     166:542    
 167:444     168:823     169:145     170:879     171:87      172:4      
 173:1745    174:592     175:432     176:297     177:393     178:1117   
 180:1147    181:39      182:656     183:239     184:394     185:1      
 186:1409    187:779     188:980     189:1159    190:5209    192:5933   
 193:5038    194:3544    195:3108    196:1276    197:166     198:3623   
 199:4216    200:5533    201:1704    202:8546    203:8549    204:4307   
 205:2398    206:2592    207:2820    208:4030    209:3577    210:2740   
 211:1465    212:2010    213:1807    214:815     215:97      216:4923   
 217:1601    218:577     219:339     220:1253    221:520     222:327    
 223:279    

End of report



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