ASN AS21947 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21947?

AS21947 is listed under Blackfoot Telephone Cooperative, Inc..

What do peers, upstreams, and downstreams mean in ASN data?

Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.

What are routes and IP ranges for an ASN?

Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.

Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access the full ASN tables?

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AS21947 Blackfoot Telephone Cooperative, Inc.

ASN Lookup Tool

Blackfoot Telephone Cooperative, Inc. blackfoot.com

US 19 Routes

AS Data

AS21947

AS21947 – Blackfoot Telephone Cooperative, Inc.

AS Number	21947
AS Name	BCI
Organization	Blackfoot Telephone Cooperative, Inc. (btc-13)
Country	US
Website	blackfoot.com
Number of IPv4 Routes	16
Number of IPv6 Routes	3
ASN type	ISP
Registry	ARIN
Date Allocated	2001-07-17

ASN Intelligence API for production workflows

Use ASN data for AS21947 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
69.165.112.0/20	AS21947	Blackfoot Telephone Cooperative, Inc.	Blackfoot Telephone Cooperative, Inc.	4096
2607:f8e0::/32	AS21947	Blackfoot Telephone Cooperative, Inc.	Blackfoot Telephone Cooperative, Inc.	~79×10²⁷
199.195.120.0/21	AS21947	Blackfoot Telephone Cooperative, Inc.	Blackfoot Telephone Cooperative, Inc.	2048
216.47.48.0/20	AS21947	Blackfoot Telephone Cooperative, Inc.	Blackfoot Telephone Cooperative, Inc.	4096
216.14.224.0/19	AS21947	Blackfoot Telephone Cooperative, Inc.	Blackfoot Telephone Cooperative, Inc.	8192
204.11.244.0/22	AS21947	Blackfoot Telephone Cooperative, Inc.	Blackfoot Telephone Cooperative, Inc.	1024
209.137.224.0/19	AS40097	Printingforless.com, Inc.	Blackfoot Telephone Cooperative, Inc.	8192
198.60.195.0/24	AS21947	Blackfoot Telephone Cooperative, Inc.	University of Idaho	256
209.200.197.0/24	AS21947	Blackfoot Telephone Cooperative, Inc.	Blackfoot Telephone Cooperative, Inc.	256
2001:1940::/32	AS21947	Blackfoot Telephone Cooperative, Inc.	Blackfoot Telephone Cooperative, Inc.	~79×10²⁷

Raw Whois Response

#
# 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.
#


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: GRAYS80-ARIN
OrgTechName:   Grayson, Jordan 
OrgTechPhone:  +1-406-541-5000 
OrgTechEmail:  jgrayson@blackfoot.com
OrgTechRef:    https://rdap.arin.net/registry/entity/GRAYS80-ARIN

OrgTechHandle: DOMBR8-ARIN
OrgTechName:   Dombrosky, Shaun 
OrgTechPhone:  +1-406-541-5000 
OrgTechEmail:  sdombrosky@blackfoot.com
OrgTechRef:    https://rdap.arin.net/registry/entity/DOMBR8-ARIN

OrgNOCHandle: FEENS-ARIN
OrgNOCName:   Feenstra, Rob 
OrgNOCPhone:  +1-406-541-5495 
OrgNOCEmail:  rfeenstra@blackfoot.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/FEENS-ARIN

OrgTechHandle: FEENS-ARIN
OrgTechName:   Feenstra, Rob 
OrgTechPhone:  +1-406-541-5495 
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

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


#
# 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.
#

Parsed Whois Response

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "21947",
    "as_handle" : "AS21947",
    "as_name" : "BCI",
    "tech_contacts" : [ "GRAYS80-ARIN", "DOMBR8-ARIN", "FEENS-ARIN", "FLYNN168-ARIN" ],
    "abuse_contacts" : [ "NAE2-ARIN" ],
    "date_created" : "2001-07-17",
    "date_updated" : "2013-07-22",
    "source" : "https://rdap.arin.net/registry/autnum/21947"
  } ],
  "organization" : {
    "handle" : "BTC-13",
    "name" : "Blackfoot Telephone Cooperative, Inc.",
    "address" : [ "1221 N. Russel St.", "Missoula", "MT", "59808", "US" ],
    "street" : "N. Russel St.",
    "city" : "Missoula",
    "state" : "MT",
    "zip_code" : "59808",
    "country" : [ "US" ],
    "date_created" : "1999-08-11",
    "date_updated" : "2024-11-25",
    "source" : "https://rdap.arin.net/registry/entity/BTC-13",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "GRAYS80-ARIN",
    "name" : "Grayson, Jordan",
    "email" : [ "jgrayson@blackfoot.com" ],
    "phone" : [ "+1-406-541-5000" ],
    "source" : "https://rdap.arin.net/registry/entity/GRAYS80-ARIN"
  }, {
    "handle" : "DOMBR8-ARIN",
    "name" : "Dombrosky, Shaun",
    "email" : [ "sdombrosky@blackfoot.com" ],
    "phone" : [ "+1-406-541-5000" ],
    "source" : "https://rdap.arin.net/registry/entity/DOMBR8-ARIN"
  }, {
    "handle" : "FEENS-ARIN",
    "name" : "Feenstra, Rob",
    "email" : [ "rfeenstra@blackfoot.com" ],
    "phone" : [ "+1-406-541-5495" ],
    "source" : "https://rdap.arin.net/registry/entity/FEENS-ARIN"
  }, {
    "handle" : "FLYNN168-ARIN",
    "name" : "Flynn, Shannon",
    "email" : [ "sflynn@blackfoot.com" ],
    "phone" : [ "+1-406-541-5373" ],
    "source" : "https://rdap.arin.net/registry/entity/FLYNN168-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NAE2-ARIN",
    "name" : "Network Abuse Email",
    "email" : [ "abuse@blackfoot.net" ],
    "phone" : [ "+1-406-541-5000" ],
    "source" : "https://rdap.arin.net/registry/entity/NAE2-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS393630	Avantguard Monitoring Centers	US
AS393577	Tritan Development	US
AS401703	Ordinal Advisors LLC	US
AS6939	Hurricane Electric LLC	US
AS10242	US Internet Corp	US
AS14537	Continent 8 LLC	US
AS33521	Missoula County Public Schools	US
AS5645	TekSavvy Solutions, Inc.	CA
AS33281	BRIGHAM YOUNG UNIVERSITY IDAHO	US
AS54410	Bozeman Deaconess Health Services	US

Upstreams

AS Number	Description	Country
AS52025	ParadoxNetworks Limited	GB
AS7575	Australian Academic and Research Network	AU
AS394256	Tech Futures Interactive Inc.	CA
AS9002	RETN Limited	GB
AS15305	Syringa Networks, LLC	US
AS1299	Arelion Sweden AB	SE
AS6939	Hurricane Electric LLC	US
AS2914	NTT America, Inc.	US
AS32621	Twin City VoIP, Inc.	US
AS137409	GSL Networks Pty LTD	AU

Downstreams

AS Number	Description	Country
AS393630	Avantguard Monitoring Centers	US
AS1378	Interbel Telephone Cooperative, Inc.	US
AS22785	GLACIER BANCORP INC	US
AS33521	Missoula County Public Schools	US
AS395861	Medical Imaging Associates of Idaho Falls, Inc.	US
AS33281	BRIGHAM YOUNG UNIVERSITY IDAHO	US
AS54410	Bozeman Deaconess Health Services	US
AS395251	Benefis Health System	US
AS27391	Washington Corporations	US
AS46324	Advanced Stream Inc.	US