[afnog] Weekly Routing Table Report

Routing Analysis Role Account cscora at apnic.net
Fri Jul 29 19:05:00 UTC 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 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 30 Jul, 2011

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

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

BGP routing table entries examined:                              365335
    Prefixes after maximum aggregation:                          165793
    Deaggregation factor:                                          2.20
    Unique aggregates announced to Internet:                     181250
Total ASes present in the Internet Routing Table:                 38300
    Prefixes per ASN:                                              9.54
Origin-only ASes present in the Internet Routing Table:           31802
Origin ASes announcing only one prefix:                           15306
Transit ASes present in the Internet Routing Table:                5217
Transit-only ASes present in the Internet Routing Table:            138
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      34
    Max AS path prepend of ASN (22394)                               31
Prefixes from unregistered ASNs in the Routing Table:              1005
    Unregistered ASNs in the Routing Table:                         569
Number of 32-bit ASNs allocated by the RIRs:                       1603
Number of 32-bit ASNs visible in the Routing Table:                1281
Prefixes from 32-bit ASNs in the Routing Table:                    2966
Special use prefixes present in the Routing Table:                    0
Prefixes being announced from unallocated address space:            118
Number of addresses announced to Internet:                   2488168960
    Equivalent to 148 /8s, 78 /16s and 114 /24s
    Percentage of available address space announced:               67.1
    Percentage of allocated address space announced:               67.1
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               91.2
Total number of prefixes smaller than registry allocations:      152319

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

Prefixes being announced by APNIC Region ASes:                    91501
    Total APNIC prefixes after maximum aggregation:               30401
    APNIC Deaggregation factor:                                    3.01
Prefixes being announced from the APNIC address blocks:           88083
    Unique aggregates announced from the APNIC address blocks:    37486
APNIC Region origin ASes present in the Internet Routing Table:    4521
    APNIC Prefixes per ASN:                                       19.48
APNIC Region origin ASes announcing only one prefix:               1253
APNIC Region transit ASes present in the Internet Routing Table:    713
Average APNIC Region AS path length visible:                        4.4
    Max APNIC Region AS path length visible:                         19
Number of APNIC region 32-bit ASNs visible in the Routing Table:     66
Number of APNIC addresses announced to Internet:              622567776
    Equivalent to 37 /8s, 27 /16s and 161 /24s
    Percentage of available APNIC address space announced:         79.0

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,  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:                    141849
    Total ARIN prefixes after maximum aggregation:                73135
    ARIN Deaggregation factor:                                     1.94
Prefixes being announced from the ARIN address blocks:           113666
    Unique aggregates announced from the ARIN address blocks:     46757
ARIN Region origin ASes present in the Internet Routing Table:    14520
    ARIN Prefixes per ASN:                                         7.83
ARIN Region origin ASes announcing only one prefix:                5565
ARIN Region transit ASes present in the Internet Routing Table:    1537
Average ARIN Region AS path length visible:                         4.0
    Max ARIN Region AS path length visible:                          34
Number of ARIN region 32-bit ASNs visible in the Routing Table:      12
Number of ARIN addresses announced to Internet:               803106176
    Equivalent to 47 /8s, 222 /16s and 109 /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:                     86823
    Total RIPE prefixes after maximum aggregation:                49404
    RIPE Deaggregation factor:                                     1.76
Prefixes being announced from the RIPE address blocks:            80166
    Unique aggregates announced from the RIPE address blocks:     53029
RIPE Region origin ASes present in the Internet Routing Table:    15823
    RIPE Prefixes per ASN:                                         5.07
RIPE Region origin ASes announcing only one prefix:                7899
RIPE Region transit ASes present in the Internet Routing Table:    2509
Average RIPE Region AS path length visible:                         4.6
    Max RIPE Region AS path length visible:                          33
Number of RIPE region 32-bit ASNs visible in the Routing Table:     924
Number of RIPE addresses announced to Internet:               484366720
    Equivalent to 28 /8s, 222 /16s and 217 /24s
    Percentage of available RIPE address space announced:          78.0

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:                   33819
    Total LACNIC prefixes after maximum aggregation:               7619
    LACNIC Deaggregation factor:                                   4.44
Prefixes being announced from the LACNIC address blocks:          33043
    Unique aggregates announced from the LACNIC address blocks:   17222
LACNIC Region origin ASes present in the Internet Routing Table:   1492
    LACNIC Prefixes per ASN:                                      22.15
LACNIC Region origin ASes announcing only one prefix:               440
LACNIC Region transit ASes present in the Internet Routing Table:   275
Average LACNIC Region AS path length visible:                       4.4
    Max LACNIC Region AS path length visible:                        19
Number of LACNIC region 32-bit ASNs visible in the Routing Table:   275
Number of LACNIC addresses announced to Internet:              87208704
    Equivalent to 5 /8s, 50 /16s and 179 /24s
    Percentage of available LACNIC address space announced:        57.8

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:                   8186
    Total AfriNIC prefixes after maximum aggregation:              1976
    AfriNIC Deaggregation factor:                                  4.14
Prefixes being announced from the AfriNIC address blocks:          6472
    Unique aggregates announced from the AfriNIC address blocks:   2027
AfriNIC Region origin ASes present in the Internet Routing Table:   476
    AfriNIC Prefixes per ASN:                                     13.60
AfriNIC Region origin ASes announcing only one prefix:              149
AfriNIC Region transit ASes present in the Internet Routing Table:  106
Average AfriNIC Region AS path length visible:                      4.8
    Max AfriNIC Region AS path length visible:                       24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table:    4
Number of AfriNIC addresses announced to Internet:             26891520
    Equivalent to 1 /8s, 154 /16s and 85 /24s
    Percentage of available AfriNIC address space announced:       40.1

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     2478      11045         945   Korea Telecom (KIX)
17974     1747        516          31   PT TELEKOMUNIKASI INDONESIA
 7545     1558        301          85   TPG Internet Pty Ltd
 4755     1513        635         172   TATA Communications formerly 
 7552     1314       1064           7   Vietel Corporation
24560     1194        336         187   Bharti Airtel Ltd., Telemedia
 9829     1115        929          42   BSNL National Internet Backbo
 9583     1061         78         499   Sify Limited
 4808     1052       2093         299   CNCGROUP IP network: China169
17488      977        189         114   Hathway IP Over Cable Interne

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     3620       3818         237   bellsouth.net, inc. 
18566     1913        365         241   Covad Communications 
 1785     1812        681         121   PaeTec Communications, Inc.
 4323     1615       1082         401   Time Warner Telecom
 7029     1604        993         229   Windstream Communications Inc
20115     1591       1538         623   Charter Communications 
19262     1413       4792         392   Verizon Global Networks 
22773     1406       2900          90   Cox Communications, Inc.
 7018     1362       7068         890   AT&T WorldNet Services
 2386     1257        520         906   AT&T Data Communications Serv

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
34984      534        106         185   BILISIM TELEKOM
 6830      512       1788         316   UPC Distribution Services
 3292      468       2078         403   TDC Tele Danmark
20940      466        133         358   Akamai Technologies European 
12479      456        593           7   Uni2 Autonomous System
 8866      454        133          26   Bulgarian Telecommunication C
29049      431         31          49   AzerSat LLC.
 3320      425       8151         371   Deutsche Telekom AG
 8551      404        354          44   Bezeq International
 3301      397       1855         346   TeliaNet Sweden

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     1565        288         167   TVCABLE BOGOTA 
 8151     1421       2748         352   UniNet S.A. de C.V. 
28573     1283        996          67   NET Servicos de Comunicao S.A
 7303     1065        577         175   Telecom Argentina Stet-France
 6503      749        450          68   AVANTEL, S.A. 
14420      701         56          82   CORPORACION NACIONAL DE TELEC
22047      578        322          17   VTR PUNTO NET S.A. 
 3816      532        232          97   Empresa Nacional de Telecomun
 7738      516        986          31   Telecomunicacoes da Bahia S.A
27947      510         53          54   Telconet 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
24863      799        147          36   LINKdotNET AS number
 8452      794        445          11   TEDATA
15475      510         74           8   Nile Online
 3741      265        937         226   The Internet Solution 
 6713      260        519          14   Itissalat Al-MAGHRIB
36992      259        415          15   Etisalat MISR
33776      227         13           6   Starcomms Nigeria Limited
24835      177         78          10   RAYA Telecom - Egypt
29571      158         17          11   Ci Telecom Autonomous system 
16637      146        665          84   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     3620       3818         237   bellsouth.net, inc. 
23456     2966        713        1585   32-bit ASN transition
 4766     2478      11045         945   Korea Telecom (KIX)
18566     1913        365         241   Covad Communications 
 1785     1812        681         121   PaeTec Communications, Inc.
17974     1747        516          31   PT TELEKOMUNIKASI INDONESIA
 4323     1615       1082         401   Time Warner Telecom
 7029     1604        993         229   Windstream Communications Inc
20115     1591       1538         623   Charter Communications 
10620     1565        288         167   TVCABLE BOGOTA 

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

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

  ASN   No of nets  Net Savings Description
17974      1747        1716      PT TELEKOMUNIKASI INDONESIA
 1785      1812        1691      PaeTec Communications, Inc.
18566      1913        1672      Covad Communications 
 4766      2478        1533      Korea Telecom (KIX)
 7545      1558        1473      TPG Internet Pty Ltd
10620      1565        1398      TVCABLE BOGOTA 
23456      2966        1381      32-bit ASN transition
 7029      1604        1375      Windstream Communications Inc
 4755      1513        1341      TATA Communications formerly 
22773      1406        1316      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
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
13317   UNALLOCATED  12.44.10.0/24         7018       AT&T WorldNet Servic
23502   UNALLOCATED  12.44.44.0/24         7018       AT&T WorldNet Servic

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

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

Network            Origin AS  Description
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       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 

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        /8:20       /9:12      /10:27      /11:80      /12:233     
/13:465     /14:799     /15:1407    /16:12045   /17:5889    /18:9805    
/19:19535   /20:26307   /21:26309   /22:35049   /23:33972   /24:190038  
/25:1098    /26:1287    /27:738     /28:203     /29:9       /30:2       
/31:0       /32:6       

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

  ASN   No of nets  Total ann.   Description
 6389     2243          3620      bellsouth.net, inc. 
18566     1869          1913      Covad Communications 
23456     1463          2966      32-bit ASN transition
10620     1460          1565      TVCABLE BOGOTA 
 7029     1303          1604      Windstream Communications Inc
11492     1096          1142      Cable One 
 7011     1056          1158      Citizens Utilities 
 1785     1053          1812      PaeTec Communications, Inc.
 6478      968           996      AT&T Worldnet Services 
22773      905          1406      Cox Communications, Inc.

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

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

   1:340       2:46        4:16        5:1         6:3         8:339    
  12:1957     13:1        14:498      15:15       16:3        17:5      
  20:10       23:18       24:1678     27:861      31:508      32:64     
  33:4        34:2        36:4        38:729      40:104      41:2560   
  42:36       44:3        46:1051     47:3        49:201      50:376    
  52:13       54:2        55:6        56:2        57:34       58:870    
  59:487      60:378      61:1178     62:1045     63:1938     64:3987   
  65:2295     66:3905     67:1887     68:1113     69:3057     70:779    
  71:373      72:1864     74:2436     75:328      76:341      77:864    
  78:706      79:468      80:1119     81:839      82:502      83:466    
  84:689      85:1064     86:517      87:763      88:333      89:1533   
  90:224      91:3980     92:528      93:1056     94:1334     95:864    
  96:420      97:264      98:912      99:37      101:82      103:162    
 106:78      107:26      108:73      109:1029    110:605     111:715    
 112:305     113:407     114:554     115:685     116:987     117:682    
 118:856     119:1176    120:314     121:678     122:1608    123:976    
 124:1312    125:1328    128:245     129:169     130:169     131:579    
 132:113     133:21      134:214     135:52      136:215     137:132    
 138:296     139:115     140:477     141:255     142:403     143:421    
 144:486     145:56      146:454     147:216     148:673     149:248    
 150:160     151:189     152:341     153:182     154:5       155:399    
 156:199     157:353     158:140     159:454     160:315     161:205    
 162:310     163:166     164:507     165:369     166:531     167:432    
 168:746     169:153     170:836     171:81      172:1       173:1617   
 174:610     175:390     176:147     177:184     178:994     180:911    
 181:26      182:513     183:234     184:342     185:1       186:1310   
 187:765     188:894     189:967     190:5031    192:5916    193:4980   
 194:3507    195:3061    196:1199    197:46      198:3582    199:3993   
 200:5508    201:1479    202:8397    203:8455    204:4240    205:2317   
 206:2663    207:2800    208:3992    209:3410    210:2679    211:1454   
 212:2089    213:1782    214:792     215:69      216:4900    217:1632   
 218:548     219:342     220:1226    221:494     222:358     223:235    


End of report



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