Routing Table Report 00:00 GMT Sat 28 May, 2011
NB: RouteViews data includes iBGP information from some ASNs.
Treat the information provided below appropriately.
Report Website: http://thyme.rand.apnic.net
Detailed Analysis: http://thyme.rand.apnic.net/rviews/
Analysis Summary
----------------
BGP routing table entries examined: 363186
Prefixes after maximum aggregation: 163514
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 177396
Total ASes present in the Internet Routing Table: 37740
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31588
Origin ASes announcing only one prefix: 15090
Transit ASes present in the Internet Routing Table: 5043
Transit-only ASes present in the Internet Routing Table: 125
Average AS path length visible in the Internet Routing Table: 4.1
Max AS path length visible: 33
Max AS path prepend of ASN (48687) 24
Prefixes from unregistered ASNs in the Routing Table: 3368
Unregistered ASNs in the Routing Table: 396
Number of 32-bit ASNs allocated by the RIRs: 1389
Number of 32-bit ASNs visible in the Routing Table: 1109
Prefixes from 32-bit ASNs in the Routing Table: 2540
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 292
Number of addresses announced to Internet: 2437723111
Equivalent to 145 /8s, 76 /16s and 179 /24s
Percentage of available address space announced: 65.8
Percentage of allocated address space announced: 65.8
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 91.0
Total number of prefixes smaller than registry allocations: 150912
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87296
Total APNIC prefixes after maximum aggregation: 28951
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 83796
Unique aggregates announced from the APNIC address blocks: 36641
APNIC Region origin ASes present in the Internet Routing Table: 4451
APNIC Prefixes per ASN: 18.83
APNIC Region origin ASes announcing only one prefix: 1260
APNIC Region transit ASes present in the Internet Routing Table: 686
Average APNIC Region AS path length visible: 4.8
Max APNIC Region AS path length visible: 27
Number of APNIC region 32-bit ASNs visible in the Routing Table: 48
Number of APNIC addresses announced to Internet: 616551873
Equivalent to 36 /8s, 191 /16s and 213 /24s
Percentage of available APNIC address space announced: 78.2
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: 143578
Total ARIN prefixes after maximum aggregation: 73448
ARIN Deaggregation factor: 1.95
Prefixes being announced from the ARIN address blocks: 115555
Unique aggregates announced from the ARIN address blocks: 45830
ARIN Region origin ASes present in the Internet Routing Table: 14415
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5482
ARIN Region transit ASes present in the Internet Routing Table: 1478
Average ARIN Region AS path length visible: 3.6
Max ARIN Region AS path length visible: 22
Number of ARIN region 32-bit ASNs visible in the Routing Table: 12
Number of ARIN addresses announced to Internet: 801966360
Equivalent to 47 /8s, 205 /16s and 9 /24s
Percentage of available ARIN address space announced: 63.7
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: 88234
Total RIPE prefixes after maximum aggregation: 48826
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 80731
Unique aggregates announced from the RIPE address blocks: 51716
RIPE Region origin ASes present in the Internet Routing Table: 15677
RIPE Prefixes per ASN: 5.15
RIPE Region origin ASes announcing only one prefix: 7781
RIPE Region transit ASes present in the Internet Routing Table: 2452
Average RIPE Region AS path length visible: 4.2
Max RIPE Region AS path length visible: 33
Number of RIPE region 32-bit ASNs visible in the Routing Table: 820
Number of RIPE addresses announced to Internet: 474806380
Equivalent to 28 /8s, 76 /16s and 248 /24s
Percentage of available RIPE address space announced: 76.5
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: 33136
Total LACNIC prefixes after maximum aggregation: 7550
LACNIC Deaggregation factor: 4.39
Prefixes being announced from the LACNIC address blocks: 32187
Unique aggregates announced from the LACNIC address blocks: 16853
LACNIC Region origin ASes present in the Internet Routing Table: 1458
LACNIC Prefixes per ASN: 22.08
LACNIC Region origin ASes announcing only one prefix: 429
LACNIC Region transit ASes present in the Internet Routing Table: 263
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 20
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 224
Number of LACNIC addresses announced to Internet: 84022536
Equivalent to 5 /8s, 2 /16s and 21 /24s
Percentage of available LACNIC address space announced: 55.6
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: 8097
Total AfriNIC prefixes after maximum aggregation: 1894
AfriNIC Deaggregation factor: 4.28
Prefixes being announced from the AfriNIC address blocks: 6262
Unique aggregates announced from the AfriNIC address blocks: 1904
AfriNIC Region origin ASes present in the Internet Routing Table: 455
AfriNIC Prefixes per ASN: 13.76
AfriNIC Region origin ASes announcing only one prefix: 138
AfriNIC Region transit ASes present in the Internet Routing Table: 105
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 24
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 5
Number of AfriNIC addresses announced to Internet: 23146752
Equivalent to 1 /8s, 97 /16s and 49 /24s
Percentage of available AfriNIC address space announced: 34.5
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 1902 9492 618 Korea Telecom (KIX)
17974 1851 508 33 PT TELEKOMUNIKASI INDONESIA
7545 1539 301 87 TPG Internet Pty Ltd
4755 1472 634 168 Videsh Sanchar Nigam Ltd. Aut
24560 1155 337 187 Bharti Airtel Ltd.
7552 1140 1064 7 Vietel Corporation
9583 1077 80 508 Sify Limited
9829 1040 875 51 BSNL National Internet Backbo
17488 943 170 104 Hathway IP Over Cable Interne
18101 931 116 141 Reliance Infocom Ltd Internet
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3644 3822 255 bellsouth.net, inc.
4323 1967 1081 398 Time Warner Telecom
18566 1919 363 270 Covad Communications
1785 1790 681 124 AppliedTheory Corporation
6478 1704 317 50 AT&T Worldnet Services
20115 1586 1543 633 Charter Communications
19262 1490 4919 308 Verizon Global Networks
7018 1373 7101 896 AT&T WorldNet Services
22773 1335 2897 88 Cox Communications, Inc.
11492 1280 240 15 Cable One
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
286 1013 798 176 KPNQwest Backbone AS
9116 539 326 30 Goldenlines main autonomous s
6830 517 1780 319 UPC Distribution Services
3292 516 2078 398 TDC Tele Danmark
34984 516 106 179 Tellcom Iletisim Hizmetleri
20940 462 135 354 Akamai Technologies European
29049 451 33 48 AzerSat LLC.
8866 445 134 26 Bulgarian Telecommunication C
12479 428 577 6 Uni2 Autonomous System
3320 425 8152 370 Deutsche Telekom AG
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
10620 1492 274 156 TVCABLE BOGOTA
8151 1375 2691 360 Uninet S.A. de C.V.
28573 1321 991 88 Types of queries are: POCs, o
7303 958 504 150 Telecom Argentina Stet-France
6503 729 354 71 AVANTEL, S.A.
14420 670 54 91 Types of queries are: POCs, o
22047 565 310 15 Types of queries are: POCs, o
3816 523 227 100 COLOMBIA TELECOMUNICACIONES S
13489 516 262 123 Orbitel S.A. E.S.P.
27947 504 53 46 Telconet S.A
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8452 871 445 11 TEDATA
24863 787 147 37 LINKdotNET AS number
15475 544 90 8 Nile Online
16637 294 441 87 Johnnic e-Ventures
36992 290 315 18 Etisalat MISR
3741 263 937 226 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
24835 208 78 10 RAYA Telecom - Egypt
33776 202 11 8 Starcomms Nigeria Limited
29571 162 17 11 Ci Telecom Autonomous system
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
6389 3644 3822 255 bellsouth.net, inc.
23456 2540 633 1375 >>UNKNOWN<<
4323 1967 1081 398 Time Warner Telecom
18566 1919 363 270 Covad Communications
4766 1902 9492 618 Korea Telecom (KIX)
17974 1851 508 33 PT TELEKOMUNIKASI INDONESIA
1785 1790 681 124 AppliedTheory Corporation
6478 1704 317 50 AT&T Worldnet Services
20115 1586 1543 633 Charter Communications
7545 1539 301 87 TPG Internet Pty Ltd
Complete listing at http://thyme.rand.apnic.net/rviews/data-ASnet
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
17974 1851 1818 PT TELEKOMUNIKASI INDONESIA
1785 1790 1666 AppliedTheory Corporation
6478 1704 1654 AT&T Worldnet Services
18566 1919 1649 Covad Communications
4323 1967 1569 Time Warner Telecom
7545 1539 1452 TPG Internet Pty Ltd
10620 1492 1336 TVCABLE BOGOTA
4755 1472 1304 Videsh Sanchar Nigam Ltd. Aut
4766 1902 1284 Korea Telecom (KIX)
11492 1280 1265 Cable One
Complete listing at http://thyme.rand.apnic.net/rviews/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 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
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/rviews/data-badAS
Prefixes from private and non-routed address space (Global)
-----------------------------------------------------------
Prefix Origin AS Description
10.29.244.56/29 286 KPNQwest Backbone AS
10.29.245.1/32 286 KPNQwest Backbone AS
10.29.245.2/32 286 KPNQwest Backbone AS
10.29.245.15/32 286 KPNQwest Backbone AS
10.29.245.19/32 286 KPNQwest Backbone AS
10.29.245.20/32 286 KPNQwest Backbone AS
10.29.245.21/32 286 KPNQwest Backbone AS
10.29.245.22/32 286 KPNQwest Backbone AS
10.29.245.25/32 286 KPNQwest Backbone AS
10.29.245.26/32 286 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/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
27.0.128.0/17 7514 Media Exchange, Inc.
41.190.32.0/23 31856 CABSAS
41.190.34.0/23 31856 CABSAS
41.190.36.0/23 31856 CABSAS
Complete listing at http://thyme.rand.apnic.net/rviews/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 /10:28 /11:80 /12:228
/13:460 /14:802 /15:1426 /16:11908 /17:6084 /18:10066
/19:19842 /20:26447 /21:26333 /22:34550 /23:33664 /24:188430
/25:377 /26:349 /27:173 /28:295 /29:238 /30:668
/31:68 /32:638
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2244 3644 bellsouth.net, inc.
18566 1876 1919 Covad Communications
6478 1658 1704 AT&T Worldnet Services
10620 1382 1492 TVCABLE BOGOTA
23456 1238 2540 >>UNKNOWN<<
11492 1226 1280 Cable One
7011 1061 1160 Citizens Utilities
1785 1051 1790 AppliedTheory Corporation
4323 882 1967 Time Warner Telecom
286 873 1013 KPNQwest Backbone AS
Complete listing at http://thyme.rand.apnic.net/rviews/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:280 2:65 4:20 5:1 6:3 8:354
12:1987 13:1 14:461 15:15 16:3 17:8
20:10 23:7 24:1657 27:778 31:354 32:126
33:4 34:2 37:1 38:739 40:101 41:2447
42:5 44:3 46:936 47:3 49:199 50:422
52:13 54:2 55:5 56:2 57:40 58:848
59:481 60:387 61:1238 62:1061 63:1952 64:3978
65:2295 66:4172 67:1901 68:1262 69:3098 70:751
71:357 72:1924 73:3 74:2412 75:316 76:349
77:909 78:710 79:485 80:1106 81:828 82:510
83:455 84:696 85:1073 86:608 87:781 88:336
89:1575 90:203 91:3807 92:518 93:1082 94:1309
95:825 96:506 97:249 98:858 99:35 101:58
103:31 106:1 107:7 108:84 109:954 110:584
111:712 112:304 113:398 114:538 115:673 116:965
117:693 118:827 119:1139 120:278 121:671 122:1621
123:999 124:1263 125:1229 128:263 129:176 130:164
131:571 132:109 133:19 134:214 135:48 136:214
137:143 138:301 139:124 140:482 141:239 142:406
143:399 144:484 145:54 146:448 147:219 148:590
149:242 150:168 151:186 152:327 153:177 154:3
155:397 156:194 157:355 158:137 159:388 160:314
161:207 162:282 163:164 164:499 165:373 166:515
167:428 168:732 169:156 170:804 171:77 172:1
173:1576 174:552 175:366 176:129 177:141 178:992
180:847 181:17 182:454 183:209 184:366 185:1
186:1177 187:777 188:862 189:904 190:4824 192:5870
193:4915 194:3554 195:3121 196:1234 197:19 198:3609
199:3916 200:5537 201:1497 202:8320 203:8428 204:4178
205:2336 206:2754 207:2878 208:3978 209:3485 210:2742
211:1430 212:2044 213:1786 214:731 215:72 216:4924
217:1638 218:569 219:360 220:1204 221:492 222:341
223:149
End of report
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