ASN Lookup Tool

Nucor nucor.com US US 1 Routes

AS Data

AS21771

AS21771 – Nucor

AS Number 21771
AS Name NUCOR
Organization Nucor(nucor)
Country US
Website nucor.com
Number of IPv4 Routes 1
Number of IPv6 Routes 0
ASN type BUSINESS
Registry ARIN
Date Allocated 2001-06-18

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Use ASN data for AS21771 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
66.162.2.0/24 256

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:       21771
ASName:         NUCOR
ASHandle:       AS21771
RegDate:        2001-06-18
Updated:        2012-03-02    
Ref:            https://rdap.arin.net/registry/autnum/21771


OrgName:        Nucor
OrgId:          NUCOR
Address:        1915 Rexford Road
City:           Charlotte
StateProv:      NC
PostalCode:     28211
Country:        US
RegDate:        2001-06-18
Updated:        2011-09-24
Ref:            https://rdap.arin.net/registry/entity/NUCOR


OrgAbuseHandle: DD1151-ARIN
OrgAbuseName:   DUNLAP, DAVE 
OrgAbusePhone:  +1-704-972-1825 
OrgAbuseEmail:  dave.dunlap@nucor.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/DD1151-ARIN

OrgTechHandle: DD1151-ARIN
OrgTechName:   DUNLAP, DAVE 
OrgTechPhone:  +1-704-972-1825 
OrgTechEmail:  dave.dunlap@nucor.com
OrgTechRef:    https://rdap.arin.net/registry/entity/DD1151-ARIN

RNOCHandle: DD1151-ARIN
RNOCName:   DUNLAP, DAVE 
RNOCPhone:  +1-704-972-1825 
RNOCEmail:  dave.dunlap@nucor.com
RNOCRef:    https://rdap.arin.net/registry/entity/DD1151-ARIN

RTechHandle: DD1151-ARIN
RTechName:   DUNLAP, DAVE 
RTechPhone:  +1-704-972-1825 
RTechEmail:  dave.dunlap@nucor.com
RTechRef:    https://rdap.arin.net/registry/entity/DD1151-ARIN

RAbuseHandle: DD1151-ARIN
RAbuseName:   DUNLAP, DAVE 
RAbusePhone:  +1-704-972-1825 
RAbuseEmail:  dave.dunlap@nucor.com
RAbuseRef:    https://rdap.arin.net/registry/entity/DD1151-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

Peers

AS Number Description Country
AS46887 Crown Castle Fiber LLC US
AS3356 Level 3 Parent, LLC US

Upstreams

AS Number Description Country
AS46887 Crown Castle Fiber LLC US
AS3356 Level 3 Parent, LLC US

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Frequently Asked Questions

ASN AS21771 is an Autonomous System Number used to identify a network for BGP internet routing.
AS21771 is listed under Nucor.
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.