21947 BCI, US
Adjacency: 20 Upstream: 6 Downstream: 14
Upstream Adjacent AS list
AS293 ESNET, US
AS3130 RGNET-SEA RGnet Seattle Westin, EE
AS2914 NTT-LTD-2914, US
AS15305 SYRINGANETWORKS, US
AS6939 HURRICANE, US
AS1299 TWELVE99 Arelion, fka Telia Carrier, SE
Downstream Adjacent AS list
AS27391 WASHCORP-AS1, US
AS33281 BRIGHAM-YOUNG-UNIVERSITY-IDAHO, US
AS397162 SUMOFIBER-IDAHO, US
AS1378 IBEL, US
AS20274 FVCC-AS, US
AS15331 BCI-LAB, US
AS22785 GLACIER-BANCORP-INC, US
AS393630 AVANTGUARD, US
AS33521 MISSOULA-COUNTY-PUBLIC-SCHOOLS, US
AS398437 HOT-SPRINGS-TEL-01, US
AS395861 MIA, US
AS54410 BDHS-AS, US
AS46324 ADVANCED-STREAM-01, US
AS13590 MDMH, US
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 2994 AS21947 ORG+TRN Originate: 71424 /15.88 Transit: 5888 /19.48 BCI, 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 % 36192 AS21947 BCI, US 14 0 0 14 0 0.00% Prefix AS Path Aggregation Suggestion 64.25.128.0/20 2914 21947 66.109.128.0/19 2914 21947 69.51.64.0/18 2914 21947 69.165.112.0/20 2914 21947 192.150.152.0/21 6939 21947 192.225.176.0/20 6939 21947 198.60.195.0/24 2914 21947 199.195.120.0/21 2914 21947 204.11.244.0/22 2914 21947 205.167.162.0/23 2914 21947 209.137.224.0/19 2914 21947 209.200.192.0/19 2914 21947 216.14.224.0/19 2914 21947 216.47.48.0/20 2914 21947
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS21947 3 More Specifics 16 Total Advertisements BCI, US
65.39.120.0/24 65.39.96.0/19
128.254.208.0/24 128.254.208.0/22
198.60.195.0/24 198.60.194.0/23
whois: 402603
IANA has recorded AS21947 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS21947\n
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# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
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ASNumber: 21947
ASName: BCI
ASHandle: AS21947
RegDate: 2001-07-17
Updated: 2013-07-22
Ref: https://rdap.arin.net/registry/autnum/21947
OrgName: Blackfoot Telephone Cooperative, Inc.
OrgId: BTC-13
Address: 1221 N. Russel St.
City: Missoula
StateProv: MT
PostalCode: 59808
Country: US
RegDate: 1999-08-11
Updated: 2024-11-25
Ref: https://rdap.arin.net/registry/entity/BTC-13
OrgTechHandle: DOMBR8-ARIN
OrgTechName: Dombrosky, Shaun
OrgTechPhone: +1-406-541-5000
OrgTechEmail: sdombrosky@blackfoot.com
OrgTechRef: https://rdap.arin.net/registry/entity/DOMBR8-ARIN
OrgTechHandle: FEENS-ARIN
OrgTechName: Feenstra, Rob
OrgTechPhone: +1-406-532-5002
OrgTechEmail: rfeenstra@blackfoot.com
OrgTechRef: https://rdap.arin.net/registry/entity/FEENS-ARIN
OrgTechHandle: FLYNN168-ARIN
OrgTechName: Flynn, Shannon
OrgTechPhone: +1-406-541-5373
OrgTechEmail: sflynn@blackfoot.com
OrgTechRef: https://rdap.arin.net/registry/entity/FLYNN168-ARIN
OrgTechHandle: GRAYS80-ARIN
OrgTechName: Grayson, Jordan
OrgTechPhone: +1-406-541-5000
OrgTechEmail: jgrayson@blackfoot.com
OrgTechRef: https://rdap.arin.net/registry/entity/GRAYS80-ARIN
OrgNOCHandle: FEENS-ARIN
OrgNOCName: Feenstra, Rob
OrgNOCPhone: +1-406-532-5002
OrgNOCEmail: rfeenstra@blackfoot.com
OrgNOCRef: https://rdap.arin.net/registry/entity/FEENS-ARIN
OrgAbuseHandle: NAE2-ARIN
OrgAbuseName: Network Abuse Email
OrgAbusePhone: +1-406-541-5000
OrgAbuseEmail: abuse@blackfoot.net
OrgAbuseRef: https://rdap.arin.net/registry/entity/NAE2-ARIN
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# 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.
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