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AS394251 Cystic Fibrosis Foundation

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

Cystic Fibrosis Foundation cff.org

US 1 Routes

AS Data

AS394251

AS394251 – Cystic Fibrosis Foundation

AS Number	394251
AS Name	CFF
Organization	Cystic Fibrosis Foundation (cff-23)
Country	US
Website	cff.org
Number of IPv4 Routes	1
Number of IPv6 Routes	0
ASN type	NONPROFIT
Registry	ARIN
Date Allocated	2015-07-21

ASN Intelligence API for production workflows

Use ASN data for AS394251 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
198.162.0.0/24	AS394251	Cystic Fibrosis Foundation	Cystic Fibrosis Foundation	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:       394251
ASName:         CFF
ASHandle:       AS394251
RegDate:        2015-07-21
Updated:        2015-07-21
Ref:            https://rdap.arin.net/registry/autnum/394251


OrgName:        Cystic Fibrosis Foundation
OrgId:          CFF-23
Address:        4550 Montgomery Ave, Suite 1100N
City:           bethesda
StateProv:      MD
PostalCode:     20814
Country:        US
RegDate:        2013-04-03
Updated:        2019-10-15
Ref:            https://rdap.arin.net/registry/entity/CFF-23


OrgTechHandle: NETWO5981-ARIN
OrgTechName:   Network Engineer
OrgTechPhone:  +1-301-907-2599 
OrgTechEmail:  noc@cff.org
OrgTechRef:    https://rdap.arin.net/registry/entity/NETWO5981-ARIN

OrgAbuseHandle: NETWO5981-ARIN
OrgAbuseName:   Network Engineer
OrgAbusePhone:  +1-301-907-2599 
OrgAbuseEmail:  noc@cff.org
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO5981-ARIN

OrgNOCHandle: NETWO5981-ARIN
OrgNOCName:   Network Engineer
OrgNOCPhone:  +1-301-907-2599 
OrgNOCEmail:  noc@cff.org
OrgNOCRef:    https://rdap.arin.net/registry/entity/NETWO5981-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" : "394251",
    "as_handle" : "AS394251",
    "as_name" : "CFF",
    "tech_contacts" : [ "NETWO5981-ARIN" ],
    "abuse_contacts" : [ "NETWO5981-ARIN" ],
    "date_created" : "2015-07-21",
    "date_updated" : "2015-07-21",
    "source" : "https://rdap.arin.net/registry/autnum/394251"
  } ],
  "organization" : {
    "handle" : "CFF-23",
    "name" : "Cystic Fibrosis Foundation",
    "address" : [ "4550 Montgomery Ave, Suite 1100N", "bethesda", "MD", "20814", "US" ],
    "street" : "Montgomery Ave",
    "city" : "Bethesda",
    "state" : "MD",
    "zip_code" : "20814",
    "country" : [ "US" ],
    "date_created" : "2013-04-03",
    "date_updated" : "2019-10-15",
    "source" : "https://rdap.arin.net/registry/entity/CFF-23",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "NETWO5981-ARIN",
    "name" : "Network Engineer",
    "email" : [ "noc@cff.org" ],
    "phone" : [ "+1-301-907-2599" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO5981-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NETWO5981-ARIN",
    "name" : "Network Engineer",
    "email" : [ "noc@cff.org" ],
    "phone" : [ "+1-301-907-2599" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO5981-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US

Upstreams

AS Number	Description	Country
AS46887	Crown Castle Fiber LLC	US

Frequently Asked Questions

What is ASN AS394251?

ASN AS394251 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS394251?

AS394251 is listed under Cystic Fibrosis Foundation.

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.