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AS401999 Fairfax County NCR | IPGeolocation.io

Q: Why is WHOIS data shown for an ASN?

WHOIS data provides registration and contact context for ASN ownership, administration, and operational reference.

ASN Lookup Tool

Fairfax County NCR fairfaxcounty.gov

US 4 Routes

AS Data

AS401999

AS401999 – Fairfax County NCR

AS Number	401999
AS Name	PUBLIC-SAFETY-NET-EXCG
Organization	Fairfax County NCR (fcg-44)
Country	US
Website	fairfaxcounty.gov
Number of IPv4 Routes	4
Number of IPv6 Routes	0
ASN type	GOVERNMENT
Registry	ARIN
Date Allocated	2025-09-19

ASN Intelligence API for production workflows

Use ASN data for AS401999 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
76.9.156.0/24	AS401999	Fairfax County NCR	Fairfax County NCR	256
76.9.155.0/24	AS401999	Fairfax County NCR	Fairfax County NCR	256
76.9.159.0/24	AS401999	Fairfax County NCR	Fairfax County NCR	256
76.9.158.0/24	AS401999	Fairfax County NCR	Fairfax County NCR	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:       401999
ASName:         PUBLIC-SAFETY-NET-EXCG
ASHandle:       AS401999
RegDate:        2025-09-19
Updated:        2025-09-19
Ref:            https://rdap.arin.net/registry/autnum/401999


OrgName:        Fairfax County NCR
OrgId:          FCG-44
Address:        12000 Government Center Parkway
City:           Fairfax
StateProv:      VA
PostalCode:     22035
Country:        US
RegDate:        2014-04-17
Updated:        2025-09-17
Ref:            https://rdap.arin.net/registry/entity/FCG-44


OrgTechHandle: BUSTA-ARIN
OrgTechName:   Bustamante, Francis 
OrgTechPhone:  +1-703-324-4190 
OrgTechEmail:  francis.bustamante@fairfaxcounty.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/BUSTA-ARIN

OrgTechHandle: MRO315-ARIN
OrgTechName:   O'Brien, Mark Robert
OrgTechPhone:  +1-703-324-4228 
OrgTechEmail:  mark.o'brien@fairfaxcounty.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/MRO315-ARIN

OrgTechHandle: MKP8-ARIN
OrgTechName:   Palacios, Michael  K
OrgTechPhone:  +1-703-324-4505 
OrgTechEmail:  mike.palacios@fairfaxcounty.gov
OrgTechRef:    https://rdap.arin.net/registry/entity/MKP8-ARIN

OrgAbuseHandle: MDE20-ARIN
OrgAbuseName:   Dent, Michael 
OrgAbusePhone:  +1-703-324-2767 
OrgAbuseEmail:  Michael.Dent@fairfaxcounty.gov
OrgAbuseRef:    https://rdap.arin.net/registry/entity/MDE20-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

{
  "status" : true,
  "whois_server" : "whois.arin.net",
  "aut_nums" : [ {
    "aut_num" : "401999",
    "as_handle" : "AS401999",
    "as_name" : "PUBLIC-SAFETY-NET-EXCG",
    "tech_contacts" : [ "BUSTA-ARIN", "MRO315-ARIN", "MKP8-ARIN" ],
    "abuse_contacts" : [ "MDE20-ARIN" ],
    "date_created" : "2025-09-19",
    "date_updated" : "2025-09-19",
    "source" : "https://rdap.arin.net/registry/autnum/401999"
  } ],
  "organization" : {
    "handle" : "FCG-44",
    "name" : "Fairfax County NCR",
    "address" : [ "12000 Government Center Parkway", "Fairfax", "VA", "22035", "US" ],
    "street" : "Government Center Parkway",
    "city" : "Fairfax",
    "state" : "VA",
    "zip_code" : "22035",
    "country" : [ "US" ],
    "date_created" : "2014-04-17",
    "date_updated" : "2025-09-17",
    "source" : "https://rdap.arin.net/registry/entity/FCG-44",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "BUSTA-ARIN",
    "name" : "Bustamante, Francis",
    "email" : [ "francis.bustamante@fairfaxcounty.gov" ],
    "phone" : [ "+1-703-324-4190" ],
    "source" : "https://rdap.arin.net/registry/entity/BUSTA-ARIN"
  }, {
    "handle" : "MRO315-ARIN",
    "name" : "O'Brien, Mark Robert",
    "email" : [ "mark.o'brien@fairfaxcounty.gov" ],
    "phone" : [ "+1-703-324-4228" ],
    "source" : "https://rdap.arin.net/registry/entity/MRO315-ARIN"
  }, {
    "handle" : "MKP8-ARIN",
    "name" : "Palacios, Michael  K",
    "email" : [ "mike.palacios@fairfaxcounty.gov" ],
    "phone" : [ "+1-703-324-4505" ],
    "source" : "https://rdap.arin.net/registry/entity/MKP8-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "MDE20-ARIN",
    "name" : "Dent, Michael",
    "email" : [ "Michael.Dent@fairfaxcounty.gov" ],
    "phone" : [ "+1-703-324-2767" ],
    "source" : "https://rdap.arin.net/registry/entity/MDE20-ARIN"
  } ]
}

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

Frequently Asked Questions

What is ASN AS401999?

ASN AS401999 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS401999?

AS401999 is listed under Fairfax County NCR.

What do peers, upstreams, and downstreams mean?

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 included here?

WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.

How can I access full ASN table data?

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.