What is ASN AS399949?

ASN AS399949 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS399949?

AS399949 is listed under CYLOGIC 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.

AS399949 CYLOGIC INC | IPGeolocation.io

ASN Lookup Tool

CYLOGIC INC cylogic.com

US 1 Routes

AS Data

AS399949

AS399949 – CYLOGIC INC

AS Number	399949
AS Name	AS-CYLOGIC
Organization	CYLOGIC INC(cylog-1)
Country	US
Website	cylogic.com
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2023-12-11

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Use ASN data for AS399949 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
27.121.116.0/22	AS399949	CYLOGIC INC	CYLOGIC INC	1024

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:       399949
ASName:         AS-CYLOGIC
ASHandle:       AS399949
RegDate:        2023-12-11
Updated:        2023-12-11    
Ref:            https://rdap.arin.net/registry/autnum/399949


OrgName:        CYLOGIC INC
OrgId:          CYLOG-1
Address:        8401 Connecticut Ave
Address:        Suite 1260
City:           Chevy Chase
StateProv:      MD
PostalCode:     20815
Country:        US
RegDate:        2023-11-09
Updated:        2025-10-06
Ref:            https://rdap.arin.net/registry/entity/CYLOG-1


OrgDNSHandle: CPG14-ARIN
OrgDNSName:   Grady, Christopher Patrick
OrgDNSPhone:  +1-202-991-9913 
OrgDNSEmail:  chris.grady@cylogic.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/CPG14-ARIN

OrgAbuseHandle: CPG14-ARIN
OrgAbuseName:   Grady, Christopher Patrick
OrgAbusePhone:  +1-202-991-9913 
OrgAbuseEmail:  chris.grady@cylogic.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/CPG14-ARIN

OrgNOCHandle: CPG14-ARIN
OrgNOCName:   Grady, Christopher Patrick
OrgNOCPhone:  +1-202-991-9913 
OrgNOCEmail:  chris.grady@cylogic.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/CPG14-ARIN

OrgNOCHandle: CYLOG-ARIN
OrgNOCName:   cylogic-admin
OrgNOCPhone:  +1-817-235-4247 
OrgNOCEmail:  chris.grady@cylogic.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/CYLOG-ARIN

OrgTechHandle: CPG14-ARIN
OrgTechName:   Grady, Christopher Patrick
OrgTechPhone:  +1-202-991-9913 
OrgTechEmail:  chris.grady@cylogic.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CPG14-ARIN

OrgRoutingHandle: CPG14-ARIN
OrgRoutingName:   Grady, Christopher Patrick
OrgRoutingPhone:  +1-202-991-9913 
OrgRoutingEmail:  chris.grady@cylogic.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/CPG14-ARIN

OrgTechHandle: NAEEM10-ARIN
OrgTechName:   Naeem, Muhammad 
OrgTechPhone:  +1-703-559-1227 
OrgTechEmail:  muhammad.naeem@cylogic.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NAEEM10-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
AS15830	Equinix EMEA Acquisition Enterprises B.V.	NL
AS15830	Equinix (EMEA) Acquisition Enterprises B.V.	NL

Upstreams

AS Number	Description	Country
AS15830	Equinix EMEA Acquisition Enterprises B.V.	NL