ASN Lookup Tool

Institute for Defense Analyses ida.org US US 17 Routes

AS Data

AS166

AS166 – Institute for Defense Analyses

AS Number 166
AS Name IDA-AS
Organization Institute for Defense Analyses(ida-2-z)
Country US
Website ida.org
Number of IPv4 Routes 17
Number of IPv6 Routes 0
ASN type GOVERNMENT
Registry ARIN
Date Allocated 1988-03-29

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Use ASN data for AS166 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
129.246.0.0/17 32768
129.246.229.0/24 256
164.217.254.0/24 256
129.246.243.0/24 256
129.246.254.0/24 256
164.217.225.0/24 256
129.246.101.0/24 256
164.217.228.0/24 256
129.246.228.0/24 256
164.217.253.0/24 256

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:       166
ASName:         IDA-AS
ASHandle:       AS166
RegDate:        1988-03-29
Updated:        2022-05-20    
Ref:            https://rdap.arin.net/registry/autnum/166


OrgName:        Institute for Defense Analyses
OrgId:          IDA-2-Z
Address:        730 E Glebe Rd
City:           Alexandria
StateProv:      VA
PostalCode:     22305
Country:        US
RegDate:        2010-02-01
Updated:        2025-11-17
Ref:            https://rdap.arin.net/registry/entity/IDA-2-Z


OrgAbuseHandle: CMU49-ARIN
OrgAbuseName:   Murphy, Chris 
OrgAbusePhone:  +1-703-845-6833 
OrgAbuseEmail:  cmurphy@ida.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CMU49-ARIN

OrgNOCHandle: TPHID-ARIN
OrgNOCName:   TPH61-IDA
OrgNOCPhone:  +1-703-845-2518 
OrgNOCEmail:  thurrell@ida.org
OrgNOCRef:    https://rdap.arin.net/registry/entity/TPHID-ARIN

OrgTechHandle: TPHID-ARIN
OrgTechName:   TPH61-IDA
OrgTechPhone:  +1-703-845-2518 
OrgTechEmail:  thurrell@ida.org
OrgTechRef:    https://rdap.arin.net/registry/entity/TPHID-ARIN

OrgRoutingHandle: TPHID-ARIN
OrgRoutingName:   TPH61-IDA
OrgRoutingPhone:  +1-703-845-2518 
OrgRoutingEmail:  thurrell@ida.org
OrgRoutingRef:    https://rdap.arin.net/registry/entity/TPHID-ARIN

OrgTechHandle: CMU49-ARIN
OrgTechName:   Murphy, Chris 
OrgTechPhone:  +1-703-845-6833 
OrgTechEmail:  cmurphy@ida.org
OrgTechRef:    https://rdap.arin.net/registry/entity/CMU49-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
AS6939 Hurricane Electric LLC US
AS3356 Level 3 Parent, LLC US

Upstreams

AS Number Description Country
AS6939 Hurricane Electric LLC US
AS3356 Level 3 Parent, LLC US

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Frequently Asked Questions

ASN AS166 is an Autonomous System Number used to identify a network for BGP internet routing.
AS166 is listed under Institute for Defense Analyses.
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.