Routing Table Report 00:00 GMT Fri 27 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: 362821
Prefixes after maximum aggregation: 163251
Deaggregation factor: 2.22
Unique aggregates announced to Internet: 177142
Total ASes present in the Internet Routing Table: 37704
Prefixes per ASN: 9.62
Origin-only ASes present in the Internet Routing Table: 31566
Origin ASes announcing only one prefix: 15080
Transit ASes present in the Internet Routing Table: 5035
Transit-only ASes present in the Internet Routing Table: 127
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: 3327
Unregistered ASNs in the Routing Table: 385
Number of 32-bit ASNs allocated by the RIRs: 1383
Number of 32-bit ASNs visible in the Routing Table: 1103
Prefixes from 32-bit ASNs in the Routing Table: 2526
Special use prefixes present in the Routing Table: 78
Prefixes being announced from unallocated address space: 295
Number of addresses announced to Internet: 2437566535
Equivalent to 145 /8s, 74 /16s and 80 /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: 150647
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 87374
Total APNIC prefixes after maximum aggregation: 28959
APNIC Deaggregation factor: 3.02
Prefixes being announced from the APNIC address blocks: 83877
Unique aggregates announced from the APNIC address blocks: 36720
APNIC Region origin ASes present in the Internet Routing Table: 4450
APNIC Prefixes per ASN: 18.85
APNIC Region origin ASes announcing only one prefix: 1255
APNIC Region transit ASes present in the Internet Routing Table: 682
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 27
Number of APNIC region 32-bit ASNs visible in the Routing Table: 47
Number of APNIC addresses announced to Internet: 616578753
Equivalent to 36 /8s, 192 /16s and 62 /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: 143505
Total ARIN prefixes after maximum aggregation: 73399
ARIN Deaggregation factor: 1.96
Prefixes being announced from the ARIN address blocks: 115492
Unique aggregates announced from the ARIN address blocks: 45697
ARIN Region origin ASes present in the Internet Routing Table: 14403
ARIN Prefixes per ASN: 8.02
ARIN Region origin ASes announcing only one prefix: 5472
ARIN Region transit ASes present in the Internet Routing Table: 1472
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: 801948696
Equivalent to 47 /8s, 204 /16s and 196 /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: 87868
Total RIPE prefixes after maximum aggregation: 48618
RIPE Deaggregation factor: 1.81
Prefixes being announced from the RIPE address blocks: 80382
Unique aggregates announced from the RIPE address blocks: 51558
RIPE Region origin ASes present in the Internet Routing Table: 15657
RIPE Prefixes per ASN: 5.13
RIPE Region origin ASes announcing only one prefix: 7782
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: 817
Number of RIPE addresses announced to Internet: 474528460
Equivalent to 28 /8s, 72 /16s and 186 /24s
Percentage of available RIPE address space announced: 76.4
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: 33063
Total LACNIC prefixes after maximum aggregation: 7550
LACNIC Deaggregation factor: 4.38
Prefixes being announced from the LACNIC address blocks: 32128
Unique aggregates announced from the LACNIC address blocks: 16848
LACNIC Region origin ASes present in the Internet Routing Table: 1459
LACNIC Prefixes per ASN: 22.02
LACNIC Region origin ASes announcing only one prefix: 431
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: 222
Number of LACNIC addresses announced to Internet: 84023816
Equivalent to 5 /8s, 2 /16s and 26 /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: 8196
Total AfriNIC prefixes after maximum aggregation: 1896
AfriNIC Deaggregation factor: 4.32
Prefixes being announced from the AfriNIC address blocks: 6368
Unique aggregates announced from the AfriNIC address blocks: 1916
AfriNIC Region origin ASes present in the Internet Routing Table: 455
AfriNIC Prefixes per ASN: 14.00
AfriNIC Region origin ASes announcing only one prefix: 140
AfriNIC Region transit ASes present in the Internet Routing Table: 104
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: 23181056
Equivalent to 1 /8s, 97 /16s and 183 /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 1843 508 33 PT TELEKOMUNIKASI INDONESIA
7545 1537 301 86 TPG Internet Pty Ltd
4755 1470 634 166 Videsh Sanchar Nigam Ltd. Aut
24560 1152 336 183 Bharti Airtel Ltd.
7552 1140 1064 7 Vietel Corporation
9583 1077 80 508 Sify Limited
9829 1039 875 51 BSNL National Internet Backbo
17488 945 170 101 Hathway IP Over Cable Interne
18101 932 116 141 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 3642 3822 258 bellsouth.net, inc.
4323 1966 1081 398 Time Warner Telecom
18566 1919 363 270 Covad Communications
1785 1789 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 1374 7101 898 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
34984 517 106 180 Tellcom Iletisim Hizmetleri
3292 515 2062 397 TDC Tele Danmark
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 1380 2691 362 Uninet S.A. de C.V.
28573 1320 991 88 Types of queries are: POCs, o
7303 957 504 151 Telecom Argentina Stet-France
6503 733 354 74 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 517 262 121 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 875 445 11 TEDATA
24863 787 147 37 LINKdotNET AS number
15475 544 90 8 Nile Online
16637 294 441 87 Johnnic e-Ventures
36992 291 315 18 Etisalat MISR
3741 263 937 226 The Internet Solution
6713 241 215 13 Itissalat Al-MAGHRIB
33776 217 12 11 Starcomms Nigeria Limited
24835 208 78 10 RAYA Telecom - Egypt
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 3642 3822 258 bellsouth.net, inc.
23456 2526 631 1367 >>UNKNOWN<<
4323 1966 1081 398 Time Warner Telecom
18566 1919 363 270 Covad Communications
4766 1902 9492 618 Korea Telecom (KIX)
17974 1843 508 33 PT TELEKOMUNIKASI INDONESIA
1785 1789 681 124 AppliedTheory Corporation
6478 1704 317 50 AT&T Worldnet Services
20115 1586 1543 633 Charter Communications
7545 1537 301 86 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 1843 1810 PT TELEKOMUNIKASI INDONESIA
1785 1789 1665 AppliedTheory Corporation
6478 1704 1654 AT&T Worldnet Services
18566 1919 1649 Covad Communications
4323 1966 1568 Time Warner Telecom
7545 1537 1451 TPG Internet Pty Ltd
10620 1492 1336 TVCABLE BOGOTA
4755 1470 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 /16:11905 /17:6082 /18:10069
/19:19833 /20:26425 /21:26350 /22:34492 /23:33580 /24:188252
/25:373 /26:344 /27:171 /28:298 /29:240 /30:667
/31:67 /32:617
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
6389 2241 3642 bellsouth.net, inc.
18566 1876 1919 Covad Communications
6478 1658 1704 AT&T Worldnet Services
10620 1382 1492 TVCABLE BOGOTA
23456 1229 2526 >>UNKNOWN<<
11492 1226 1280 Cable One
7011 1061 1160 Citizens Utilities
1785 1051 1789 AppliedTheory Corporation
4323 881 1966 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)
----------------------------------------------
1:279 2:69 4:20 5:1 6:3 8:354
12:1985 13:1 14:461 15:15 16:3 17:8
20:10 23:7 24:1650 27:776 31:354 32:126
33:4 34:2 37:1 38:738 40:101 41:2537
42:5 44:3 46:925 47:3 49:196 50:422
52:13 54:2 55:5 56:2 57:40 58:850
59:483 60:387 61:1240 62:1047 63:1953 64:3979
65:2293 66:4171 67:1899 68:1262 69:3096 70:750
71:357 72:1921 73:3 74:2412 75:316 76:349
77:909 78:710 79:484 80:1104 81:827 82:504
83:446 84:697 85:1072 86:604 87:770 88:336
89:1552 90:203 91:3775 92:517 93:1059 94:1305
95:828 96:507 97:249 98:857 99:35 101:58
103:25 106:1 107:7 108:84 109:957 110:599
111:714 112:307 113:401 114:538 115:671 116:970
117:693 118:824 119:1135 120:307 121:671 122:1621
123:999 124:1264 125:1229 128:263 129:174 130:162
131:565 132:108 133:19 134:214 135:48 136:215
137:143 138:301 139:123 140:483 141:239 142:405
143:401 144:484 145:54 146:444 147:220 148:590
149:242 150:170 151:186 152:326 153:178 154:3
155:396 156:194 157:353 158:137 159:388 160:317
161:207 162:282 163:164 164:505 165:373 166:515
167:427 168:731 169:156 170:801 171:77 172:1
173:1575 174:552 175:372 176:129 177:144 178:990
180:849 181:17 182:452 183:209 184:365 185:1
186:1172 187:755 188:854 189:892 190:4821 192:5823
193:4869 194:3534 195:3120 196:1234 197:19 198:3604
199:3927 200:5545 201:1497 202:8339 203:8428 204:4171
205:2336 206:2748 207:2879 208:3977 209:3481 210:2743
211:1430 212:2039 213:1781 214:731 215:66 216:4923
217:1636 218:571 219:366 220:1205 221:492 222:340
223:151
End of report
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