This report was generated at Mon Sep 8 16:12:17 2008 AEST.

Report Sections:

Status Summary

Summary of total route table size for the past 7 days, a listing of possibly bogus routes seen and summary information on ASes.

Aggregation Summary

This lists the "Top 30" ASes who if they aggregated their announced prefixes could make a significant contribution to the reduction of the current size of the Internet routing table.

Last Week's Changes

A summary of the last week's changes in terms of withdrawn and added routes and added ASes.

More Specifics

A list of ASes advertising routes that are more specfic than the original registry allocation size.

Possible Bogons

A list of advertisements of address blocks and Autonomous System numbers where there is no matching allocation data.

Status Summary

Table History

Date Prefixes   CIDR Aggregated 01-09-08   279520   171918 02-09-08   279541   172356 03-09-08   279757   172890 04-09-08   279781   171815 05-09-08   279838   172577 06-09-08   280450   167662 07-09-08   280494   171189 08-09-08   280576   17939

Plot: BGP Table Size

AS Summary

966   Number of ASes in routing system 371   Number of ASes announcing only one prefix 1534   Largest number of prefixes announced by an AS   AS2386: INS-AS - AT&T Data Communications Services 76570368   Largest address span announced by an AS (/32s)   AS3356: LEVEL3 Level 3 Communications

Plot: AS count
Plot: Average announcements per origin AS
Report: ASes ordered by originating address span
Report: ASes ordered by transit address span
Report: Autonomous System number-to-name mapping (from Registry WHOIS data)

Aggregation Summary

--- 08Sep08 ---
ASnum	NetsNow	NetsAggr	NetGain	% Gain	Description
Table	7503	5118	2385	31.8%	All ASes
AS4323	1018	330	688	67.6%	TWTC - tw telecom holdings, inc.
AS2386	1534	898	636	41.5%	INS-AS - AT&T Data Communications Services
AS7018	1058	754	304	28.7%	ATT-INTERNET4 - AT&T WorldNet Services
AS668	214	108	106	49.5%	ASN-ASNET-NET-AS - Defense Research and Engineering Network
AS19685	76	19	57	75.0%	HCIS-1 - Heartland Communications Internet Services,Inc.
AS40285	130	97	33	25.4%	NORTHLAND-CABLE - NORTHLAND CABLE TELEVISION INC.
AS17232	55	24	31	56.4%	AT&T US
AS26210	41	15	26	63.4%	AES Communications Bolivia S.A.
AS4267	38	18	20	52.6%	CERNET-ASN-BLOCK - California Education and Research Federation Network
AS40020	41	24	17	41.5%	FARMERS-TELECOMMUNICATIONS-COOPERATIVE-INC - Farmers Telecommunications Cooperative, Inc.
AS17227	55	39	16	29.1%	ATT-CERFNET-BLOCK - AT&T Enhanced Network Services
AS3801	16	3	13	81.2%	MISNET - Mikrotec Internet Services, Inc.
AS12163	21	8	13	61.9%	BNSI - Broadband Network Services, Inc.
AS13807	17	4	13	76.5%	GREAT-PLAINS-COMMUNICATIONS - GREAT PLAINS COMMUNICATIONS INC
AS22243	20	8	12	60.0%	CENTRACOMM - CentraComm Communications
AS25642	23	11	12	52.2%	SPIDERHOST - Spiderhost Inc
AS10998	23	12	11	47.8%	MLAMRS - Merrill Lynch and Company, Inc.
AS17233	27	16	11	40.7%	ATT-CERFNET-BLOCK - AT&T Enhanced Network Services
AS15048	14	4	10	71.4%	METLIFE-ASN - MetLife
AS209	70	61	9	12.9%	ASN-QWEST - Qwest
AS11857	13	4	9	69.2%	AEGONUSA - Aegon USA, Inc.
AS12175	36	27	9	25.0%	YELMNET - Yelm Telephone Company
AS14131	12	3	9	75.0%	DONET - DONet Inc.
AS17231	28	19	9	32.1%	ATT-CERFNET-BLOCK - AT&T Enhanced Network Services
AS19384	19	10	9	47.4%	GRAMTEL001 - GramTel USA, Inc.
AS19893	23	14	9	39.1%	RWT - RagingWire Telecommunications
AS20115	71	62	9	12.7%	CHARTER-NET-HKY-NC - Charter Communications
AS3356	144	136	8	5.6%	LEVEL3 Level 3 Communications
AS30082	20	12	8	40.0%	QS1-DATA-SYSTEMS - QS1 Data Systems
AS32328	13	5	8	61.5%	ALASCOM-IP-MANAGED-NETWORK - Alascom
Total	4870	2745	2125	43.6%	Top 30 total

Report: Aggregation Top 20 summaries for last 7 days
Report: Full Aggregation Details

Top 20 Route Count per Originating AS
Prefixes	ASnum	AS Description
1534	AS2386	INS-AS - AT&T Data Communications Services
1058	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
1018	AS4323	TWTC - tw telecom holdings, inc.
214	AS668	ASN-ASNET-NET-AS - Defense Research and Engineering Network
144	AS3356	LEVEL3 Level 3 Communications
130	AS40285	NORTHLAND-CABLE - NORTHLAND CABLE TELEVISION INC.
76	AS19685	HCIS-1 - Heartland Communications Internet Services,Inc.
71	AS20115	CHARTER-NET-HKY-NC - Charter Communications
70	AS209	ASN-QWEST - Qwest
57	AS4266	CERNET-ASN-BLOCK - California Education and Research Federation Network
55	AS17232	AT&T US
55	AS17227	ATT-CERFNET-BLOCK - AT&T Enhanced Network Services
52	AS27524	XEEX-COMMUNICATIONS - Xeex
51	AS4739	CIX-ADELAIDE-AS Internode Systems Pty Ltd
41	AS26210	AES Communications Bolivia S.A.
41	AS30217	DESYNC - Desync Networks
41	AS40020	FARMERS-TELECOMMUNICATIONS-COOPERATIVE-INC - Farmers Telecommunications Cooperative, Inc.
38	AS4267	CERNET-ASN-BLOCK - California Education and Research Federation Network
36	AS12175	YELMNET - Yelm Telephone Company
35	AS12180	INTERNAP-2BLK - Internap Network Services Corporation

Last Week's Changes

 

 

ASes Added to the Routing Table
Prefixes	ASnum	AS Description
1	AS2	DCN-AS - University of Delaware
1	AS21670	AUDIBLE - Audible, Inc.

 

Top 20 Net Increased Routes per Originating AS
Prefixes	Change	ASnum	AS Description
1	0->1	AS2	DCN-AS - University of Delaware
1	0->1	AS21670	AUDIBLE - Audible, Inc.
1	1->2	AS46302	CINQUIX - Cinquix Networks

 

Top 20 Net Decreased Routes per Originating AS
Prefixes	Change	ASnum	AS Description
-5017	5017->0	AS4538	ERX-CERNET-BKB China Education and Research Network Center
-4302	4302->0	AS6389	BELLSOUTH-NET-BLK - BellSouth.net Inc.
-2809	2879->70	AS209	ASN-QWEST - Qwest
-2013	2013->0	AS6298	COX-PHX - Cox Communications Inc.
-1719	1719->0	AS4755	TATACOMM-AS TATA Communications formerly VSNL is Leading ISP
-1650	1650->0	AS1785	AS-PAETEC-NET - PaeTec Communications, Inc.
-1590	1590->0	AS8151	Uninet S.A. de C.V.
-1407	1478->71	AS20115	CHARTER-NET-HKY-NC - Charter Communications
-1366	1366->0	AS17488	HATHWAY-NET-AP Hathway IP Over Cable Internet
-1277	1277->0	AS1803	ICMNET-5 - Sprint
-1211	1211->0	AS11492	CABLEONE - CABLE ONE
-1134	1134->0	AS6478	ATT-INTERNET3 - AT&T WorldNet Services
-1115	1115->0	AS9583	SIFY-AS-IN Sify Limited
-1046	1046->0	AS18566	COVAD - Covad Communications Co.
-985	985->0	AS174	COGENT Cogent/PSI
-979	979->0	AS23577	ATM-MPLS-AS-KR Korea Telecom
-969	969->0	AS22773	CCINET-2 - Cox Communications Inc.
-944	944->0	AS19262	VZGNI-TRANSIT - Verizon Internet Services Inc.
-903	903->0	AS7011	FRONTIER-AND-CITIZENS - Frontier Communications of America, Inc.
-898	898->0	AS4766	KIXS-AS-KR Korea Telecom

 

Top 20 Added Routes this week per Originating AS
Prefixes	ASnum	AS Description
16	AS209	ASN-QWEST - Qwest
4	AS2386	INS-AS - AT&T Data Communications Services
4	AS15133	EDGECAST - EdgeCast Networks, Inc.
4	AS40285	NORTHLAND-CABLE - NORTHLAND CABLE TELEVISION INC.
3	AS11957	CACHEFLOW-AS - Bluecoat Systems, Inc.
1	AS17227	ATT-CERFNET-BLOCK - AT&T Enhanced Network Services
1	AS14685	COUNTRYWIDE-CREDIT1 - COUNTRYWIDE HOME LOANS
1	AS12180	INTERNAP-2BLK - Internap Network Services Corporation
1	AS21670	AUDIBLE - Audible, Inc.
1	AS36184	MT-EWT-NYC01 - Madison Tyler, LLC
1	AS46302	CINQUIX - Cinquix Networks

Top 20 Withdrawn Routes this week per Originating AS
Prefixes	ASnum	AS Description
-5017	AS4538	ERX-CERNET-BKB China Education and Research Network Center
-4302	AS6389	BELLSOUTH-NET-BLK - BellSouth.net Inc.
-2825	AS209	ASN-QWEST - Qwest
-2013	AS6298	COX-PHX - Cox Communications Inc.
-1719	AS4755	TATACOMM-AS TATA Communications formerly VSNL is Leading ISP
-1650	AS1785	AS-PAETEC-NET - PaeTec Communications, Inc.
-1590	AS8151	Uninet S.A. de C.V.
-1407	AS20115	CHARTER-NET-HKY-NC - Charter Communications
-1366	AS17488	HATHWAY-NET-AP Hathway IP Over Cable Internet
-1277	AS1803	ICMNET-5 - Sprint
-1211	AS11492	CABLEONE - CABLE ONE
-1134	AS6478	ATT-INTERNET3 - AT&T WorldNet Services
-1115	AS9583	SIFY-AS-IN Sify Limited
-1046	AS18566	COVAD - Covad Communications Co.
-985	AS174	COGENT Cogent/PSI
-979	AS23577	ATM-MPLS-AS-KR Korea Telecom
-969	AS22773	CCINET-2 - Cox Communications Inc.
-944	AS19262	VZGNI-TRANSIT - Verizon Internet Services Inc.
-903	AS7011	FRONTIER-AND-CITIZENS - Frontier Communications of America, Inc.
-898	AS4766	KIXS-AS-KR Korea Telecom

Adds and Wdls per Prefix Length
	/8	+0	-14
	/9	+0	-3
	/10	+0	-17
	/11	+0	-46
	/12	+0	-147
	/13	+0	-293
	/14	+0	-515
	/15	+0	-1051
	/16	+0	-9968
	/17	+0	-4440
	/18	+0	-7676
	/19	+0	-16214
	/20	+0	-19494
	/21	+0	-18855
	/22	+1	-23431
	/23	+6	-24290
	/24	+30	-138478
	/25	+0	-1128
	/26	+0	-1352
	/27	+0	-1019
	/28	+0	-1223
	/29	+0	-1073
	/30	+0	-847
	/31	+0	-2
	/32	+0	-498

Report: Announced and Withdrawn prefix list
Report: Announced and Withdrawn prefix list - ordered by prefix length
Report: Announced Route count per Originating AS
Report: Withdrawn Route count per Originating AS

More Specifics

Top 20 ASes advertising more specific prefixes
More Specifics	Total   Prefixes	ASnum	AS Description
1433	1534	AS2386	INS-AS - AT&T Data Communications Services
843	1018	AS4323	TWTC - tw telecom holdings, inc.
813	1058	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
152	214	AS668	ASN-ASNET-NET-AS - Defense Research and Engineering Network
130	130	AS40285	NORTHLAND-CABLE - NORTHLAND CABLE TELEVISION INC.
75	76	AS19685	HCIS-1 - Heartland Communications Internet Services,Inc.
69	71	AS20115	CHARTER-NET-HKY-NC - Charter Communications
63	70	AS209	ASN-QWEST - Qwest
54	55	AS17227	ATT-CERFNET-BLOCK - AT&T Enhanced Network Services
53	55	AS17232	AT&T US
53	57	AS4266	CERNET-ASN-BLOCK - California Education and Research Federation Network
45	52	AS27524	XEEX-COMMUNICATIONS - Xeex
41	41	AS26210	AES Communications Bolivia S.A.
41	41	AS40020	FARMERS-TELECOMMUNICATIONS-COOPERATIVE-INC - Farmers Telecommunications Cooperative, Inc.
37	41	AS30217	DESYNC - Desync Networks
36	36	AS12175	YELMNET - Yelm Telephone Company
36	38	AS4267	CERNET-ASN-BLOCK - California Education and Research Federation Network
35	144	AS3356	LEVEL3 Level 3 Communications
34	35	AS12180	INTERNAP-2BLK - Internap Network Services Corporation
32	32	AS17224	ATT-CERFNET-BLOCK - AT&T Enhanced Network Services

Report: ASes ordered by number of more specific prefixes
Report: More Specific prefix list (by AS)
Report: More Specific prefix list (ordered by prefix)

Possible Bogus Routes and AS Announcements 

Possible Bogus Routes

Prefix	Origin AS	AS Description	Unallocated block
66.180.239.0/24	AS35888	VIGNETTE - VIGNETTE CORPORATION	66.180.224.0 - 66.180.255.255
199.9.128.0/17	AS668	ASN-ASNET-NET-AS - Defense Research and Engineering Network	199.9.248.0 - 199.9.255.255
204.9.217.0/24	AS4323	TWTC - tw telecom holdings, inc.	204.9.216.0 - 204.9.219.255
204.48.58.0/24	AS4323	TWTC - tw telecom holdings, inc.	204.48.53.0 - 204.48.60.255
204.48.60.0/24	AS4323	TWTC - tw telecom holdings, inc.	204.48.53.0 - 204.48.60.255
216.99.20.0/24	AS6395	LVLT-6395 - Level 3 Communications, Inc.	216.99.16.0 - 216.99.23.255
216.240.240.0/24	AS7018	ATT-INTERNET4 - AT&T WorldNet Services	216.240.240.0 - 216.240.255.255
216.240.241.0/24	AS7018	ATT-INTERNET4 - AT&T WorldNet Services	216.240.240.0 - 216.240.255.255
216.240.242.0/24	AS7018	ATT-INTERNET4 - AT&T WorldNet Services	216.240.240.0 - 216.240.255.255

Report: Allocated and Reserved IPv4 address blocks

Possible Bogus ASs

Bogus AS		Announcing-AS
AS13317	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS13632	Announced by	AS6517	RELIANCEGLOBALCOM - Reliance Globalcom Services, Inc
AS13632	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS13746	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS14764	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS15132	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS16927	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS17300	Announced by	AS701	UUNET - MCI Communications Services, Inc. d/b/a Verizon Business
AS17300	Announced by	AS1239	SPRINTLINK - Sprint
AS17300	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS22219	Announced by	AS3356	LEVEL3 Level 3 Communications
AS22492	Announced by	AS1239	SPRINTLINK - Sprint
AS22492	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS23275	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS23502	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS25639	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS26064	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS26973	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS32326	Announced by	AS3549	GBLX Global Crossing Ltd.
AS32326	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS32567	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS32873	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services
AS32873	Announced by	AS10912	INTERNAP-BLK - Internap Network Services Corporation
AS33649	Announced by	AS7018	ATT-INTERNET4 - AT&T WorldNet Services

Report: Advertisements with Bogus ASs in the AS Path

Report: Allocated and Reserved AS blocks

A version of this report is available using plain text tables.

Report produced at: Mon Sep 8 16:12:17 2008 AEST (cidr-report.c v1.4 - gih)