Internet Routing Table Analysis Update
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1 Internet Routing Table Analysis Update Philip Smith Amsterdam, January 2001 Presentation_ID 1998, Cisco Systems, Inc. 1
2 Internet Routing Table Analysis New: Unassigned but announced ASNs flagged /24 announcements from each /8 block Full Stats on APNIC web page 2
3 19th January summary Global summary Routing Report 19 January, 2001 BGP routing table entries examined: Origin ASes present in the Internet Routing Table: 9709 Origin ASes announcing only one prefix: 3439 Transit ASes present in the Internet Routing Table: 1290 Average AS path length visible in the Internet Routing Table: 5.3 Max AS path length visible: 17 Illegal AS announcements present in the Routing Table: 17 Non-routable prefixes present in the Routing Table: 0 Prefixes being announced from the IANA Reserved Address blocks: 1 Number of addresses announced to Internet: Equivalent to 71 /8s, 84 /16s and 50 /24s Percentage of available address space announced: 32.3 Percentage of allocated address space announced: 63.3 Percentage of available address space allocated:
4 19th January summary APNIC region summary APNIC region Report 19 January, 2001 Prefixes being announced by APNIC Region ASes: Prefixes being announced from the APNIC address blocks: APNIC Region origin ASes present in the Internet Routing Table: 1132 APNIC Region origin ASes announcing only one prefix: 404 APNIC Region transit ASes present in the Internet Routing Table: 178 Average APNIC Region AS path length visible: 5.0 Max APNIC Region AS path length visible: 10 Number of APNIC addresses announced to Internet: Equivalent to 3 /8s, 218 /16s and 108 /24s Percentage of available APNIC address space announced: 76.1 APNIC AS Blocks , , , APNIC Address Blocks 61/8, 202/7 and 210/7 4
5 19th January summary ARIN region summary ARIN region Report 19 January, 2001 Prefixes being announced by ARIN Region ASes: Prefixes being announced from the ARIN address blocks: ARIN Region origin ASes present in the Internet Routing Table: 5907 ARIN Region origin ASes announcing only one prefix: 1712 ARIN Region transit ASes present in the Internet Routing Table: 621 Average ARIN Region AS path length visible: 5.2 Max ARIN Region AS path length visible: 17 Number of ARIN addresses announced to Internet: Equivalent to 10 /8s, 80 /16s and 78 /24s Percentage of available ARIN address space announced: 79.3 ARIN AS Blocks , , , , , , , , , , , , ARIN Address Blocks 63/8, 64/7, 66/8, 199/8, 200/8, 204/6, 208/7 and 216/8 5
6 19th January summary RIPE NCC region summary RIPE NCC region Report 19 January, 2001 Prefixes being announced by RIPE Region ASes: Prefixes being announced from the RIPE address blocks: RIPE Region origin ASes present in the Internet Routing Table: 2671 RIPE Region origin ASes announcing only one prefix: 1323 RIPE Region transit ASes present in the Internet Routing Table: 490 Average RIPE Region AS path length visible: 5.9 Max RIPE Region AS path length visible: 16 Number of RIPE addresses announced to Internet: Equivalent to 5 /8s, 73 /16s and 100 /24s Percentage of available RIPE address space announced: 75.5 RIPE AS Blocks , 2042, 2047, , , , , , , , RIPE Address Blocks 62/8, 193/8, 194/7, 212/7 and 217/8 6
7 APNIC Region per AS prefix count summary ASN No of nets /19 equiv Description Telstra connect.com.au pty ltd SINET Japan UUNET Technologies, Inc VSNL India Oz The Internet Group Limited Internet Thailand Hong Kong CTI TPG Internet Pty Ltd Telstra New Zealand Optus Communications KORnet Powered BY Korea Telec Data Communications Bureau Paradox Digital Pty. Ltd Power Up Data Communications Institute NetConnect Communications Pty Delegated to TWNIC for subseq One.Net Pty Ltd 7
8 ARIN Region per AS prefix count summary ASN No of nets /19 equiv Description UUNET Technologies, Inc BBN Planet AT&T Sprint ICM-Inria UUNET Technologies, Inc Verio, Inc PSINet Inc Digital Express Group, Inc UUNET Technologies, Inc Cable & Wireless USA NETCOM On-Line Communication Frontier GlobalCenter PSINet Ltd. Canada Supernet, Inc Qwest Sprint Canada Cable & Wireless USA BCnet Backbone Management Analysis, Incorpor UniNet S.A. de C.V. 8
9 RIPE NCC Region per AS prefix count summary ASN No of nets /19 equiv Description TeliaNet Sweden UUNET Technologies, Inc UUNET Germany Swipnet AB RAIN LANLINK Sonera Finland JANET IP Service UUNET UK (formerly PIPEX) Deutsche Telekom AG Deutschef Forschurgsnetz Xlink INRIA-Rocquencourt BTnet UK Regional network Swisscom Concert Internet Plus Europea EUnet Austria IUnet S.p.A TELECOM ITALIA UUNET FRANCE 9
10 Global per AS prefix count summary ASN No of nets /19 equiv Description UUNET Technologies, Inc Telstra BBN Planet AT&T Sprint ICM-Inria UUNET Technologies, Inc Verio, Inc PSINet Inc Digital Express Group, Inc UUNET Technologies, Inc Cable & Wireless USA NETCOM On-Line Communication Frontier GlobalCenter PSINet Ltd. Canada Supernet, Inc connect.com.au pty ltd Qwest Sprint Canada Cable & Wireless USA BCnet Backbone 10
11 List of Illegal AS's Bad AS Designation Network Transit AS Description 2027 UNALLOCATED / Interpacket Group, 2027 UNALLOCATED / Publicom Corp UNALLOCATED / Interpacket Group, 2027 UNALLOCATED / Interpacket Group 2027 UNALLOCATED / Interpacket Group 2027 UNALLOCATED / Interpacket Group 1877 UNALLOCATED / SPRINT 1877 UNALLOCATED / Stupi, house man's 1877 UNALLOCATED / Stupi, house man's 1877 UNALLOCATED / SPRINT 5757 UNALLOCATED / UUNET Technologies, 5757 UNALLOCATED / UUNET Technologies, PRIVATE / INRIA-Rocquencourt PRIVATE / Netscape Communicati PRIVATE / chello broadband PRIVATE / chello broadband PRIVATE / Western Australian I UUNET are aware of AS5757 and will resolve ASAP RIPE NCC and Peter are aware of 1877 and will fix ASAP ARIN are aware of AS no more news 11
12 Advertised IANA Reserved Addresses Network Origin AS Description / Net56 Number of prefixes announced by prefix length /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:21 /9:4 /10:5 /11:10 /12:31 /13:59 /14:194 /15:305 /16:6777 /17:1010 /18:2027 /19:6263 /20:4434 /21:4318 /22:6450 /23:8419 /24:58056 /25:291 /26:411 /27:244 /28:182 /29:154 /30:275 /31:1 /32:220 12
13 Number of /24s announced by per /8 9:2 12:306 15:1 24:640 26:1 32:29 38:8 44:2 53:2 55:1 57:9 61:61 62:102 63: : :24 66:78 91:1 128:28 129: :20 131:31 132:9 133:4 134:94 135:7 136: :78 138: :68 140: :19 142:61 143:36 144: :11 146: :89 148: : :22 151: : : :58 155:71 156:14 157: :57 159:52 160:18 161:57 162:63 163: : :98 166: :77 168:71 169:31 170: :2 192: : : : : : : : : : : : : : : : : : : : :8 215:11 216: :88 13
14 BGP Table Growth Telstra withdraw 203.0/10 Korea Telecom leak 3000 prefixes Prefixes Mar 1999 Time Jan
15 AS Announcement Growth What happened here?? 250 ASes disappear 8000 ASNs Mar 1999 Time Jan
16 RIPE vs APNIC prefixes announced Prefixes RIPE APNIC 6000 Mar 1999 Time Jan
17 Final Slide... What other stats would be interesting? Any comments/discussion? 17
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