ASN AS21759 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21759?

AS21759 is listed under National Rural Utilities Cooperative Finance Corporation.

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?

The page shows a preview of large ASN datasets. Use the page controls to load more rows, and upgrade to a paid plan for complete access.

AS21759 National Rural Utilities Cooperative Finance Corporation

ASN Lookup Tool

National Rural Utilities Cooperative Finance Corporation nrucfc.coop

US 3 Routes

AS Data

AS21759

AS21759 – National Rural Utilities Cooperative Finance Corporation

AS Number	21759
AS Name	NRUCFC
Organization	National Rural Utilities Cooperative Finance Corporation (nrucfc-1)
Country	US
Website	nrucfc.coop
Number of IPv4 Routes	3
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2001-06-18

ASN Intelligence API for production workflows

Use ASN data for AS21759 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
192.31.110.0/24	AS21759	National Rural Utilities Cooperative Finance Corporation	National Rural Utilities Cooperative Finance Corporation	256
205.229.101.0/24	AS21759	National Rural Utilities Cooperative Finance Corporation	National Rural Utilities Co operative Finance Corporation	256
204.111.120.0/24	AS21759	National Rural Utilities Cooperative Finance Corporation	Shenandoah Cable Television LLC	256

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:       21759
ASName:         NRUCFC
ASHandle:       AS21759
RegDate:        2001-06-18
Updated:        2018-08-09
Ref:            https://rdap.arin.net/registry/autnum/21759


OrgName:        National Rural Utilities Cooperative Finance Corporation
OrgId:          NRUCFC-1
Address:        20701 Cooperative Way
City:           Dulles
StateProv:      VA
PostalCode:     20166
Country:        US
RegDate:        2001-06-18
Updated:        2018-08-09
Ref:            https://rdap.arin.net/registry/entity/NRUCFC-1


OrgNOCHandle: ECC11-ARIN
OrgNOCName:   ECC
OrgNOCPhone:  +1-703-467-1800 
OrgNOCEmail:  certadmin@nrucfc.coop
OrgNOCRef:    https://rdap.arin.net/registry/entity/ECC11-ARIN

OrgAbuseHandle: ECC11-ARIN
OrgAbuseName:   ECC
OrgAbusePhone:  +1-703-467-1800 
OrgAbuseEmail:  certadmin@nrucfc.coop
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ECC11-ARIN

OrgTechHandle: ECC11-ARIN
OrgTechName:   ECC
OrgTechPhone:  +1-703-467-1800 
OrgTechEmail:  certadmin@nrucfc.coop
OrgTechRef:    https://rdap.arin.net/registry/entity/ECC11-ARIN

RNOCHandle: ECC11-ARIN
RNOCName:   ECC
RNOCPhone:  +1-703-467-1800 
RNOCEmail:  certadmin@nrucfc.coop
RNOCRef:    https://rdap.arin.net/registry/entity/ECC11-ARIN

RTechHandle: ECC11-ARIN
RTechName:   ECC
RTechPhone:  +1-703-467-1800 
RTechEmail:  certadmin@nrucfc.coop
RTechRef:    https://rdap.arin.net/registry/entity/ECC11-ARIN

RAbuseHandle: ECC11-ARIN
RAbuseName:   ECC
RAbusePhone:  +1-703-467-1800 
RAbuseEmail:  certadmin@nrucfc.coop
RAbuseRef:    https://rdap.arin.net/registry/entity/ECC11-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" : "21759",
    "as_handle" : "AS21759",
    "as_name" : "NRUCFC",
    "tech_contacts" : [ "ECC11-ARIN", "ECC11-ARIN" ],
    "abuse_contacts" : [ "ECC11-ARIN", "ECC11-ARIN" ],
    "date_created" : "2001-06-18",
    "date_updated" : "2018-08-09",
    "source" : "https://rdap.arin.net/registry/autnum/21759"
  } ],
  "organization" : {
    "handle" : "NRUCFC-1",
    "name" : "National Rural Utilities Cooperative Finance Corporation",
    "address" : [ "20701 Cooperative Way", "Dulles", "VA", "20166", "US" ],
    "street" : "Cooperative Way",
    "city" : "Dulles",
    "state" : "VA",
    "zip_code" : "20166",
    "country" : [ "US" ],
    "date_created" : "2001-06-18",
    "date_updated" : "2018-08-09",
    "source" : "https://rdap.arin.net/registry/entity/NRUCFC-1",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "ECC11-ARIN",
    "name" : "ECC",
    "email" : [ "certadmin@nrucfc.coop" ],
    "phone" : [ "+1-703-467-1800" ],
    "source" : "https://rdap.arin.net/registry/entity/ECC11-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "ECC11-ARIN",
    "name" : "ECC",
    "email" : [ "certadmin@nrucfc.coop" ],
    "phone" : [ "+1-703-467-1800" ],
    "source" : "https://rdap.arin.net/registry/entity/ECC11-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS4922	Shenandoah Cable Television LLC	US
AS701	Verizon Business/UUnet	US
AS701	Verizon Business	US

Upstreams

AS Number	Description	Country
AS4922	Shenandoah Cable Television LLC	US
AS701	Verizon Business	US