ASN AS19586 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS19586?

AS19586 is listed under First City Internet, LLC.

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?

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AS19586 First City Internet, LLC

ASN Lookup Tool

First City Internet, LLC firstcityinternet.com

US 16 Routes

AS Data

AS19586

AS19586 – First City Internet, LLC

AS Number	19586
AS Name	FIRST-CITY-INTERNET
Organization	First City Internet, LLC(fcil-1)
Country	US
Website	firstcityinternet.com
Number of IPv4 Routes	8
Number of IPv6 Routes	8
ASN type	ISP
Registry	ARIN
Date Allocated	2001-01-22

ASN Intelligence API for production workflows

Use ASN data for AS19586 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2602:fb8c:2::/48	AS19586	First City Internet, LLC	First City Internet, LLC	~1×10²⁴
204.15.112.0/24	AS19586	First City Internet, LLC	First City Internet, LLC	256
208.73.116.0/24	AS19586	First City Internet, LLC	First City Internet, LLC	256
2602:fb8c::/48	AS19586	First City Internet, LLC	First City Internet, LLC	~1×10²⁴
2602:fb8c:7::/48	AS19586	First City Internet, LLC	First City Internet, LLC	~1×10²⁴
2602:fb8c:4::/48	AS19586	First City Internet, LLC	First City Internet, LLC	~1×10²⁴
204.15.115.0/24	AS19586	First City Internet, LLC	First City Internet, LLC	256
204.15.114.0/24	AS19586	First City Internet, LLC	First City Internet, LLC	256
208.73.119.0/24	AS19586	First City Internet, LLC	First City Internet, LLC	256
208.73.117.0/24	AS19586	First City Internet, LLC	First City Internet, LLC	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:       19586
ASName:         FIRST-CITY-INTERNET
ASHandle:       AS19586
RegDate:        2001-01-22
Updated:        2022-04-13    
Ref:            https://rdap.arin.net/registry/autnum/19586


OrgName:        First City Internet, LLC
OrgId:          FCIL-1
Address:        3 W. Garden Street
Address:        Suite 214
City:           Pensacola
StateProv:      FL
PostalCode:     32502
Country:        US
RegDate:        2022-02-26
Updated:        2022-03-17
Ref:            https://rdap.arin.net/registry/entity/FCIL-1


OrgDNSHandle: JN296-ARIN
OrgDNSName:   Nitterauer, JIM 
OrgDNSPhone:  +1-850-696-6634 
OrgDNSEmail:  jim@firstcityinternet.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/JN296-ARIN

OrgTechHandle: JN296-ARIN
OrgTechName:   Nitterauer, JIM 
OrgTechPhone:  +1-850-696-6634 
OrgTechEmail:  jim@firstcityinternet.com
OrgTechRef:    https://rdap.arin.net/registry/entity/JN296-ARIN

OrgAbuseHandle: JN296-ARIN
OrgAbuseName:   Nitterauer, JIM 
OrgAbusePhone:  +1-850-696-6634 
OrgAbuseEmail:  jim@firstcityinternet.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/JN296-ARIN

OrgNOCHandle: JN296-ARIN
OrgNOCName:   Nitterauer, JIM 
OrgNOCPhone:  +1-850-696-6634 
OrgNOCEmail:  jim@firstcityinternet.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/JN296-ARIN

OrgRoutingHandle: JN296-ARIN
OrgRoutingName:   Nitterauer, JIM 
OrgRoutingPhone:  +1-850-696-6634 
OrgRoutingEmail:  jim@firstcityinternet.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/JN296-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
AS3549	Level 3 Communications, Inc. (GBLX)	US
AS3356	Level 3 Parent, LLC	US

Upstreams

AS Number	Description	Country
AS3356	Level 3 Parent, LLC	US