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From: Routing Analysis Role Account (no email)
Date: Fri May 05 2006 - 14:06:07 EDT
This is an automated weekly mailing describing the state of the Internet
Routing Table as seen from APNIC's router in Japan.
Daily listings are sent to
If you have any comments please contact Philip Smith <>.
Routing Table Report 04:00 +10GMT Sat 06 May, 2006
Analysis Summary
----------------
BGP routing table entries examined: 187455
Prefixes after maximum aggregation: 103616
Unique aggregates announced to Internet: 91884
Total ASes present in the Internet Routing Table: 22087
Origin-only ASes present in the Internet Routing Table: 19218
Origin ASes announcing only one prefix: 9153
Transit ASes present in the Internet Routing Table: 2869
Transit-only ASes present in the Internet Routing Table: 66
Average AS path length visible in the Internet Routing Table: 3.5
Max AS path length visible: 23
Max AS path prepend of ASN (34527) 16
Prefixes from unregistered ASNs in the Routing Table: 28
Unregistered ASNs in the Routing Table: 6
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 13
Number of addresses announced to Internet: 1531319456
Equivalent to 91 /8s, 70 /16s and 20 /24s
Percentage of available address space announced: 41.3
Percentage of allocated address space announced: 59.8
Percentage of available address space allocated: 69.1
Total number of prefixes smaller than registry allocations: 92349
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 39523
Total APNIC prefixes after maximum aggregation: 16521
Prefixes being announced from the APNIC address blocks: 37242
Unique aggregates announced from the APNIC address blocks: 18267
APNIC Region origin ASes present in the Internet Routing Table: 2543
APNIC Region origin ASes announcing only one prefix: 715
APNIC Region transit ASes present in the Internet Routing Table: 390
Average APNIC Region AS path length visible: 3.5
Max APNIC Region AS path length visible: 15
Number of APNIC addresses announced to Internet: 225017824
Equivalent to 13 /8s, 105 /16s and 127 /24s
Percentage of available APNIC address space announced: 70.4
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911
APNIC Address Blocks 58/7, 60/7, 121/8, 122/7, 124/7, 126/8, 202/7
210/7, 218/7, 220/7 and 222/8
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 97040
Total ARIN prefixes after maximum aggregation: 57517
Prefixes being announced from the ARIN address blocks: 71278
Unique aggregates announced from the ARIN address blocks: 26403
ARIN Region origin ASes present in the Internet Routing Table: 10690
ARIN Region origin ASes announcing only one prefix: 4009
ARIN Region transit ASes present in the Internet Routing Table: 986
Average ARIN Region AS path length visible: 3.3
Max ARIN Region AS path length visible: 18
Number of ARIN addresses announced to Internet: 290145792
Equivalent to 17 /8s, 75 /16s and 70 /24s
Percentage of available ARIN address space announced: 75.2
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
ARIN Address Blocks 24/8, 63/8, 64/5, 72/6, 76/8, 199/8, 204/6,
208/7 and 216/8
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 37490
Total RIPE prefixes after maximum aggregation: 25049
Prefixes being announced from the RIPE address blocks: 34506
Unique aggregates announced from the RIPE address blocks: 23143
RIPE Region origin ASes present in the Internet Routing Table: 7951
RIPE Region origin ASes announcing only one prefix: 4162
RIPE Region transit ASes present in the Internet Routing Table: 1306
Average RIPE Region AS path length visible: 4.0
Max RIPE Region AS path length visible: 20
Number of RIPE addresses announced to Internet: 247766464
Equivalent to 14 /8s, 196 /16s and 157 /24s
Percentage of available RIPE address space announced: 77.7
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
RIPE Address Blocks 62/8, 80/5, 88/6, 193/8, 194/7, 212/7
and 217/8
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 11278
Total LACNIC prefixes after maximum aggregation: 3636
Prefixes being announced from the LACNIC address blocks: 9368
Unique aggregates announced from the LACNIC address blocks: 5436
LACNIC Region origin ASes present in the Internet Routing Table: 683
LACNIC Region origin ASes announcing only one prefix: 221
LACNIC Region transit ASes present in the Internet Routing Table: 129
Average LACNIC Region AS path length visible: 4.1
Max LACNIC Region AS path length visible: 23
Number of LACNIC addresses announced to Internet: 26824960
Equivalent to 1 /8s, 153 /16s and 81 /24s
Percentage of available LACNIC address space announced: 40.0
LACNIC AS Blocks 26592-26623, 27648-28671, plus ERX transfers
LACNIC Address Blocks 189/8, 190/8, 200/7
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 2119
Total AfriNIC prefixes after maximum aggregation: 893
Prefixes being announced from the AfriNIC address blocks: 1463
Unique aggregates announced from the AfriNIC address blocks: 953
AfriNIC Region origin ASes present in the Internet Routing Table: 154
AfriNIC Region origin ASes announcing only one prefix: 46
AfriNIC Region transit ASes present in the Internet Routing Table: 27
Average AfriNIC Region AS path length visible: 3.4
Max AfriNIC Region AS path length visible: 13
Number of AfriNIC addresses announced to Internet: 4066816
Equivalent to 0 /8s, 62 /16s and 14 /24s
Percentage of available AfriNIC address space announced: 12.1
AfriNIC AS Blocks 36864-37887 & ERX transfers
AfriNIC Address Blocks 41/8, 196/8
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
4134 1129 7088 221 CHINANET-BACKBONE
4755 913 259 71 Videsh Sanchar Nigam Ltd. Aut
9583 900 109 16 Sify Limited
4766 676 4435 303 Korea Telecom (KIX)
1221 615 1556 471 Telstra Pty Ltd
9498 566 211 67 BHARTI BT INTERNET LTD.
7545 530 124 70 TPG Internet Pty Ltd
17488 501 31 7 Hathway IP Over Cable Interne
17676 486 7029 108 Softbank BB Corp.
9443 450 110 81 Primus Telecommunications
4802 384 81 175 Wantree Development
17849 347 22 113 Telecommunications Technology
18101 338 85 24 Reliance Infocom Ltd Internet
2907 336 1749 312 SINET Japan
17557 329 28 158 Pakistan Telecom
9929 324 221 57 China Netcom Corp.
17974 312 120 29 PT TELEKOMUNIKASI INDONESIA
7474 299 211 229 SingTel Optus Pty Ltd
9800 273 410 67 CHINA UNICOM
9837 265 78 158 Powertel Ltd
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
7018 1508 6256 967 AT&T WorldNet Services
4323 1292 733 253 Time Warner Telecom
6197 1007 618 472 BellSouth Network Solutions,
721 1001 21929 303 DLA Systems Automation Center
174 961 5787 907 Cogent Communications
19029 951 151 111 New Edge Networks
18566 937 272 8 Covad Communications
701 923 8009 765 UUNET Technologies, Inc.
2386 877 522 676 AT&T Data Communications Serv
1239 848 2805 600 Sprint
209 709 3595 555 Qwest
19262 695 2089 165 Verizon Global Networks
20115 688 601 369 Charter Communications
22773 658 1745 45 Cox Communications, Inc.
7011 633 217 413 Citizens Utilities
11492 631 87 21 Cable One
852 582 1085 384 Telus Advanced Communications
19916 563 49 54 OLM LLC
855 549 244 63 Canadian Research Network
3602 537 127 109 Sprint Canada, Inc.
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
702 580 1951 456 UUNET - Commercial IP service
3352 310 1612 29 Ibernet, Internet Access Netw
3301 306 1071 292 TeliaNet Sweden
8220 290 474 268 COLT Telecommunications
3320 286 3989 239 Deutsche Telekom AG
680 245 2025 242 DFN-IP service G-WiN
3246 233 504 223 Song Networks
6746 227 89 203 Dynamic Network Technologies,
8708 218 276 201 Romania Data Systems S.A.
24863 207 40 9 LINKdotNET AS number
8551 202 198 24 Bezeq International
3269 198 2134 72 TELECOM ITALIA
3215 196 1662 93 France Telecom Transpac
1257 195 742 169 SWIPnet Swedish IP Network
8866 179 37 16 Bulgarian Telecommunication C
6830 175 765 35 UPC Distribution Services
786 171 1778 171 The JANET IP Service
5400 170 363 139 BT Ignite European Backbone
9121 170 931 27 TTnet Autonomous System
30890 170 15 63 SC Kappa Invexim SRL
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8151 700 1067 227 UniNet S.A. de C.V.
22047 409 158 11 VTR PUNTO NET S.A.
11172 324 110 84 Servicios Alestra S.A de C.V
16814 317 20 8 NSS, S.A.
6147 262 126 22 Telefonica Del Peru
14117 205 12 6 Telefonica del Sur S.A.
10481 181 72 8 Prima S.A.
7303 163 76 20 Telecom Argentina Stet-France
21826 138 16 21 INTERCABLE
5639 132 12 9 Telecommunications Services o
11556 132 80 4 Cable-Wireless Panama
6503 129 149 78 AVANTEL, S.A.
19169 127 8 20 Telconet
14259 115 10 12 GTD Internet S.A.
23216 110 21 9 RAMtelecom Telecomunicaciones
6505 106 88 78 Global One Communicaoes Ltda
7910 105 7 10 ANDINET ON LINE
19429 103 58 44 E.T.B.
14522 100 13 7 SatNet S.A.
14571 97 25 3 Internet Group do Brasil
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
3741 278 803 233 The Internet Solution
8452 170 60 7 TEDATA
6713 145 135 11 Itissalat Al-MAGHRIB
2018 123 314 104 Tertiary Education Network
5536 121 8 18 Internet Egypt Network
24835 117 50 7 RAYA Telecom - Egypt
33783 105 6 2 EEPAD TISP TELECOM & INTERNET
2905 73 155 66 The Internetworking Company o
20928 57 16 2 Noor Advanced Technologies AS
15475 55 84 4 Nile Online
5713 39 294 35 Telkom SA Ltd
15706 31 8 3 Sudatel Internet Exchange Aut
33774 30 7 20 AS Number for Telecom Algeria
12455 28 6 3 Jambonet Autonomous system
23889 26 8 11 MAURITIUS TELECOM
8524 24 1 4 AUCEGYPT Autonomous System
16637 24 14 22 Johnnic e-Ventures
10798 22 1 13 Standard Bank of South Africa
2561 19 6 2 Egyptian Universities Network
21491 19 17 2 UTL On-line is RF broadband I
Global Per AS Maximum Aggr summary
----------------------------------
ASN No of nets Net Savings Description
4323 1292 1039 Time Warner Telecom
18566 937 929 Covad Communications
4134 1129 908 CHINANET-BACKBONE
9583 900 884 Sify Limited
4755 913 842 Videsh Sanchar Nigam Ltd. Aut
19029 951 840 New Edge Networks
721 1001 698 DLA Systems Automation Center
22773 658 613 Cox Communications, Inc.
11492 631 610 Cable One
6197 1007 535 BellSouth Network Solutions,
19262 695 530 Verizon Global Networks
19916 563 509 OLM LLC
5668 532 509 CenturyTel Internet Holdings,
9498 566 499 BHARTI BT INTERNET LTD.
17488 501 494 Hathway IP Over Cable Interne
855 549 486 Canadian Research Network
8151 700 473 UniNet S.A. de C.V.
7545 530 460 TPG Internet Pty Ltd
3602 537 428 Sprint Canada, Inc.
22047 409 398 VTR PUNTO NET S.A.
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Network Transit AS Description
36656 UNALLOCATED 64.18.154.0/24 19318 Albany International
36656 UNALLOCATED 64.20.54.0/24 19318 Albany International
36656 UNALLOCATED 64.20.55.0/24 19318 Albany International
36656 UNALLOCATED 64.20.57.0/24 19318 Albany International
36656 UNALLOCATED 64.20.58.0/24 19318 Albany International
36656 UNALLOCATED 64.20.59.0/24 19318 Albany International
36656 UNALLOCATED 64.20.60.0/24 19318 Albany International
36656 UNALLOCATED 64.20.61.0/24 19318 Albany International
36656 UNALLOCATED 64.20.62.0/24 19318 Albany International
36727 UNALLOCATED 74.128.0.0/15 3356 Level 3 Communicatio
36727 UNALLOCATED 74.130.0.0/16 3356 Level 3 Communicatio
36727 UNALLOCATED 74.131.0.0/16 1239 Sprint
36727 UNALLOCATED 74.132.0.0/16 3356 Level 3 Communicatio
36727 UNALLOCATED 74.133.0.0/17 3356 Level 3 Communicatio
36727 UNALLOCATED 74.133.128.0/18 3356 Level 3 Communicatio
36727 UNALLOCATED 74.134.0.0/15 1239 Sprint
36727 UNALLOCATED 74.136.0.0/16 1239 Sprint
36727 UNALLOCATED 74.137.0.0/18 3356 Level 3 Communicatio
36727 UNALLOCATED 74.137.64.0/20 3356 Level 3 Communicatio
36727 UNALLOCATED 74.137.80.0/20 1239 Sprint
36727 UNALLOCATED 74.137.96.0/20 1239 Sprint
36727 UNALLOCATED 74.137.112.0/20 1239 Sprint
36727 UNALLOCATED 74.137.128.0/17 3356 Level 3 Communicatio
65289 PRIVATE 148.164.1.0/24 4755 Videsh Sanchar Nigam
24409 UNALLOCATED 203.119.29.0/24 9808 Guangdong Mobile Com
65280 PRIVATE 203.197.161.0/24 4755 Videsh Sanchar Nigam
65280 PRIVATE 203.200.14.0/24 4755 Videsh Sanchar Nigam
65280 PRIVATE 203.200.21.0/24 4755 Videsh Sanchar Nigam
Advertised Unallocated Addresses
--------------------------------
Network Origin AS Description
132.0.0.0/10 721 DLA Systems Automation Center
137.0.0.0/13 721 DLA Systems Automation Center
158.0.0.0/13 721 DLA Systems Automation Center
183.206.196.0/24 2188 FR-RENATER-ASTER
192.44.0.0/24 5501 Fraunhofer Gesellschaft
192.44.0.0/19 702 UUNET - Commercial IP service
192.70.164.0/24 25689 National Research Council of
192.84.205.0/24 719 LANLINK autonomous system
192.119.135.0/24 270 NASA
192.172.0.0/19 721 DLA Systems Automation Center
223.1.1.0/24 22724 PUNTONET S.A.
223.1.2.0/24 22724 PUNTONET S.A.
223.1.3.0/24 22724 PUNTONET S.A.
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:18 /9:9 /10:9 /11:28 /12:89
/13:199 /14:361 /15:706 /16:8796 /17:3201 /18:5278
/19:11597 /20:13106 /21:11313 /22:14494 /23:15593 /24:101607
/25:380 /26:266 /27:209 /28:61 /29:70 /30:35
/31:0 /32:30
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
18566 920 937 Covad Communications
19029 882 951 New Edge Networks
6197 796 1007 BellSouth Network Solutions,
7018 795 1508 AT&T WorldNet Services
9583 729 900 Sify Limited
4323 636 1292 Time Warner Telecom
11492 622 631 Cable One
2386 597 877 AT&T Data Communications Serv
19916 557 563 OLM LLC
7011 542 633 Citizens Utilities
4766 486 676 Korea Telecom (KIX)
855 424 549 Canadian Research Network
5668 413 532 CenturyTel Internet Holdings,
15270 388 419 PaeTec.net -a division of Pae
1239 385 848 Sprint
702 359 580 UUNET - Commercial IP service
6198 356 507 BellSouth Network Solutions,
6517 356 386 Yipes Communications, Inc.
17849 347 347 Telecommunications Technology
8151 345 700 UniNet S.A. de C.V.
Number of /24s announced per /8 block (Global)
----------------------------------------------
4:2 8:43 12:1634 13:1 15:12 16:3
17:3 18:4 20:43 24:740 25:1 30:2
32:59 38:211 40:54 41:1 44:3 47:6
52:4 55:1 56:3 57:25 58:152 59:188
60:181 61:844 62:764 63:1924 64:3180 65:2203
66:2993 67:600 68:659 69:1484 70:328 71:80
72:688 73:23 74:32 80:797 81:631 82:599
83:385 84:380 85:528 86:390 87:325 88:80
89:172 124:265 125:379 128:172 129:182 130:109
131:318 132:28 133:8 134:158 135:46 136:179
137:71 138:197 139:68 140:465 141:136 142:382
143:163 144:225 145:43 146:325 147:135 148:330
149:187 150:116 151:80 152:64 153:106 154:6
155:196 156:98 157:143 158:162 159:171 160:87
161:72 162:259 163:146 164:180 165:194 166:163
167:244 168:483 169:129 170:332 171:13 183:1
190:59 192:5735 193:3365 194:2600 195:1838 196:844
198:3900 199:3225 200:4433 201:922 202:6599 203:6887
204:3887 205:2080 206:2403 207:2939 208:2077 209:3802
210:1915 211:684 212:1188 213:1477 214:313 215:41
216:4117 217:1172 218:275 219:184 220:655 221:358
222:149 223:3
End of report
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