ASN AS10493 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS10493?

AS10493 is listed under Grand Central Networks 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.

AS10493 Grand Central Networks Inc.

ASN Lookup Tool

Grand Central Networks Inc. gcnpublishing.com

US 6 Routes

AS Data

AS10493

AS10493 – Grand Central Networks Inc.

AS Number	10493
AS Name	GCN-AS
Organization	Grand Central Networks Inc.(gcn-13)
Country	US
Website	gcnpublishing.com
Number of IPv4 Routes	6
Number of IPv6 Routes	0
ASN type	ISP
Registry	ARIN
Date Allocated	1997-08-27

ASN Intelligence API for production workflows

Use ASN data for AS10493 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

Get ASN API Key ASN API Docs

IP Ranges

Route	Origin	Origin Name	ISP	# IPs
172.81.91.0/24	AS10493	Grand Central Networks Inc.	Grand Central Networks Inc.	256
172.81.90.0/24	AS10493	Grand Central Networks Inc.	Grand Central Networks Inc.	256
74.201.43.0/24	AS10493	Grand Central Networks Inc.	GCN Publishing	256
172.81.88.0/24	AS10493	Grand Central Networks Inc.	Grand Central Networks Inc.	256
50.31.163.0/24	AS10493	Grand Central Networks Inc.	Grand Central Networks Inc.	256
172.81.89.0/24	AS10493	Grand Central Networks Inc.	Grand Central Networks 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:       10493
ASName:         GCN-AS
ASHandle:       AS10493
RegDate:        1997-08-27
Updated:        1997-08-27    
Ref:            https://rdap.arin.net/registry/autnum/10493


OrgName:        Grand Central Networks Inc.
OrgId:          GCN-13
Address:        194 Main Street, 2NW
City:           Norwalk
StateProv:      CT
PostalCode:     06851
Country:        US
RegDate:        1997-08-27
Updated:        2015-05-12
Ref:            https://rdap.arin.net/registry/entity/GCN-13


OrgTechHandle: SF509-ARIN
OrgTechName:   Fulton, Sean 
OrgTechPhone:  +1-203-665-6211 
OrgTechEmail:  sean@gcnpublishing.com
OrgTechRef:    https://rdap.arin.net/registry/entity/SF509-ARIN

OrgAbuseHandle: SF509-ARIN
OrgAbuseName:   Fulton, Sean 
OrgAbusePhone:  +1-203-665-6211 
OrgAbuseEmail:  sean@gcnpublishing.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/SF509-ARIN

RTechHandle: SF509-ARIN
RTechName:   Fulton, Sean 
RTechPhone:  +1-203-665-6211 
RTechEmail:  sean@gcnpublishing.com
RTechRef:    https://rdap.arin.net/registry/entity/SF509-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
AS12213	Centersquare	US
AS23352	DEFT.COM	US

Upstreams

AS Number	Description	Country
AS12213	Centersquare	US
AS23352	DEFT.COM	US