ASN AS18639 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS18639?

AS18639 is listed under Abt Associates, 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?

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.

AS18639 Abt Associates, Inc. | IPGeolocation.io

ASN Lookup Tool

Abt Associates, Inc. abtassoc.com

US 3 Routes

AS Data

AS18639

AS18639 – Abt Associates, Inc.

AS Number	18639
AS Name	ABTASSOCIATES-AS
Organization	Abt Associates, Inc.(abtass)
Country	US
Website	abtassoc.com
Number of IPv4 Routes	2
Number of IPv6 Routes	1
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2006-11-16

ASN Intelligence API for production workflows

Use ASN data for AS18639 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

Access complete peers, upstreams, downstreams, routes, WHOIS, and contact intelligence via our API. Learn more

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2602:277:e1::/48	AS18639	Abt Associates, Inc.	Abt Associates, Inc.	~1×10²⁴
198.105.0.0/24	AS18639	Abt Associates, Inc.	Abt Associates, Inc.	256
198.105.1.0/24	AS18639	Abt Associates, Inc.	Abt Associates, Inc.	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:       18639
ASName:         ABTASSOCIATES-AS
ASHandle:       AS18639
RegDate:        2006-11-16
Updated:        2020-03-03    
Ref:            https://rdap.arin.net/registry/autnum/18639


OrgName:        Abt Associates, Inc.
OrgId:          ABTASS
Address:        10 Fawcett St
City:           Cambridge
StateProv:      MA
PostalCode:     02138
Country:        US
RegDate:        1993-03-31
Updated:        2025-03-18
Ref:            https://rdap.arin.net/registry/entity/ABTASS


OrgAbuseHandle: CHANJ50-ARIN
OrgAbuseName:   Chan, Jemmy 
OrgAbusePhone:  +1-617-520-2702 
OrgAbuseEmail:  jemmy_chan@abtassoc.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CHANJ50-ARIN

OrgAbuseHandle: GOODR29-ARIN
OrgAbuseName:   Goodride, Peter 
OrgAbusePhone:  +1-617-349-2440 
OrgAbuseEmail:  pete_goodridge@abtassoc.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/GOODR29-ARIN

OrgTechHandle: GOODR29-ARIN
OrgTechName:   Goodride, Peter 
OrgTechPhone:  +1-617-349-2440 
OrgTechEmail:  pete_goodridge@abtassoc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/GOODR29-ARIN

OrgTechHandle: CHANJ50-ARIN
OrgTechName:   Chan, Jemmy 
OrgTechPhone:  +1-617-520-2702 
OrgTechEmail:  jemmy_chan@abtassoc.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CHANJ50-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
AS6461	Zayo Bandwidth	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US
AS6461	Zayo Bandwidth	US