26271 CMSINTERNET, US
Adjacency: 5 Upstream: 2 Downstream: 3
Upstream Adjacent AS list
AS174 COGENT-174, US
AS6939 HURRICANE, US
Downstream Adjacent AS list
AS33583 IBC-FGIS, US
AS14691 -Reserved AS-, ZZ
AS62968 AS-CMC, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 5455 AS26271 ORG+TRN Originate: 31744 /17.05 Transit: 2304 /20.83 CMSINTERNET, US
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 7370 AS26271 CMSINTERNET, US 13 7 1 7 6 46.15% Prefix AS Path Aggregation Suggestion 64.25.192.0/20 6939 26271 107.161.128.0/20 6939 26271 107.181.192.0/19 6939 26271 138.229.32.0/19 6939 26271 162.249.112.0/22 6939 26271 162.250.24.0/21 6939 26271 207.241.128.0/20 6939 26271 + Announce - aggregate of 207.241.128.0/21 (6939 26271) and 207.241.136.0/21 (6939 26271) 207.241.128.0/22 6939 26271 - Withdrawn - aggregated with 207.241.132.0/22 (6939 26271) 207.241.132.0/23 6939 26271 - Withdrawn - aggregated with 207.241.134.0/23 (6939 26271) 207.241.134.0/23 6939 26271 - Withdrawn - aggregated with 207.241.132.0/23 (6939 26271) 207.241.136.0/22 6939 26271 - Withdrawn - aggregated with 207.241.140.0/22 (6939 26271) 207.241.140.0/24 6939 26271 - Withdrawn - aggregated with 207.241.141.0/24 (6939 26271) 207.241.141.0/24 6939 26271 - Withdrawn - aggregated with 207.241.140.0/24 (6939 26271) 207.241.142.0/23 6939 26271 - Withdrawn - aggregated with 207.241.140.0/23 (6939 26271)
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS26271 21 More Specifics 21 Total Advertisements CMSINTERNET, US
64.25.192.0/21 64.25.192.0/20
64.25.200.0/21 64.25.192.0/20
107.161.128.0/21 107.161.128.0/20
107.161.136.0/21 107.161.128.0/20
107.181.192.0/20 107.181.192.0/19
107.181.208.0/20 107.181.192.0/19
138.229.32.0/20 138.229.32.0/19
138.229.48.0/20 138.229.32.0/19
162.249.112.0/23 162.249.112.0/22
162.249.114.0/23 162.249.112.0/22
162.250.24.0/22 162.250.24.0/21
162.250.28.0/22 162.250.24.0/21
207.241.128.0/23 207.241.128.0/20
207.241.130.0/24 207.241.128.0/20
207.241.131.0/24 207.241.128.0/20
207.241.132.0/22 207.241.128.0/20
207.241.136.0/24 207.241.128.0/20
207.241.137.0/24 207.241.128.0/20
207.241.138.0/23 207.241.128.0/20
207.241.140.0/24 207.241.128.0/20
207.241.142.0/23 207.241.128.0/20
207.241.128.0/21 207.241.128.0/20
207.241.136.0/22 207.241.128.0/20
207.241.141.0/24 207.241.128.0/20
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 64.25.192.0/21 Announced
+ 64.25.200.0/21 Announced
+ 107.161.128.0/21 Announced
+ 107.161.136.0/21 Announced
+ 107.181.192.0/20 Announced
+ 107.181.208.0/20 Announced
+ 138.229.32.0/20 Announced
+ 138.229.48.0/20 Announced
+ 162.249.112.0/23 Announced
+ 162.249.114.0/23 Announced
+ 162.250.24.0/22 Announced
+ 162.250.28.0/22 Announced
+ 207.241.128.0/23 Announced
+ 207.241.130.0/24 Announced
+ 207.241.131.0/24 Announced
+ 207.241.132.0/22 Announced
+ 207.241.136.0/24 Announced
+ 207.241.137.0/24 Announced
+ 207.241.138.0/23 Announced
- 64.25.192.0/20 Withdrawn
- 107.161.128.0/20 Withdrawn
- 107.181.192.0/19 Withdrawn
- 138.229.32.0/19 Withdrawn
- 162.249.112.0/22 Withdrawn
- 162.250.24.0/21 Withdrawn
- 207.241.128.0/21 Withdrawn
- 207.241.136.0/22 Withdrawn
- 207.241.141.0/24 Withdrawn
whois: 402603
IANA has recorded AS26271 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS26271\n
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
ASNumber: 26271
ASName: CMSINTERNET
ASHandle: AS26271
RegDate: 2002-08-09
Updated: 2012-03-02
Ref: https://rdap.arin.net/registry/autnum/26271
OrgName: CMSInter.net LLC
OrgId: CMSI
Address: 131 S. Main St.
City: Mount Pleasant
StateProv: MI
PostalCode: 48858
Country: US
RegDate: 1999-04-09
Updated: 2024-11-25
Comment: http://geofeed.cmsinter.net/geofeed.csv
Ref: https://rdap.arin.net/registry/entity/CMSI
OrgNOCHandle: GRAHA9-ARIN
OrgNOCName: Graham, Daniel
OrgNOCPhone: +1-989-400-4230
OrgNOCEmail: dan@cmsinter.net
OrgNOCRef: https://rdap.arin.net/registry/entity/GRAHA9-ARIN
OrgTechHandle: GRAHA9-ARIN
OrgTechName: Graham, Daniel
OrgTechPhone: +1-989-400-4230
OrgTechEmail: dan@cmsinter.net
OrgTechRef: https://rdap.arin.net/registry/entity/GRAHA9-ARIN
OrgAbuseHandle: ABUSE2784-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-800-962-7022
OrgAbuseEmail: abuse@cmsinter.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE2784-ARIN
OrgNOCHandle: NOC33459-ARIN
OrgNOCName: NOC
OrgNOCPhone: +1-989-400-4888
OrgNOCEmail: noc@cmsinter.net
OrgNOCRef: https://rdap.arin.net/registry/entity/NOC33459-ARIN
OrgTechHandle: NOC33459-ARIN
OrgTechName: NOC
OrgTechPhone: +1-989-400-4888
OrgTechEmail: noc@cmsinter.net
OrgTechRef: https://rdap.arin.net/registry/entity/NOC33459-ARIN
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#