What is ASN AS399728?

ASN AS399728 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS399728?

AS399728 is listed under P Foundation.

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.

AS399728 P Foundation | IPGeolocation.io

ASN Lookup Tool

P Foundation p.foundation

US 17 Routes

AS Data

AS399728

AS399728 – P Foundation

AS Number	399728
AS Name	PFOUNDATION
Organization	P Foundation (pf-547)
Country	US
Website	p.foundation
Number of IPv4 Routes	7
Number of IPv6 Routes	10
ASN type	ISP
Registry	ARIN
Date Allocated	2021-06-01

ASN Intelligence API for production workflows

Use ASN data for AS399728 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

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
172.98.49.0/24	AS399728	P Foundation	P Foundation	256
2620:98:e002::/48	AS399728	P Foundation	P Foundation	~1×10²⁴
172.98.48.0/22	AS399728	P Foundation	P Foundation	1024
172.98.50.0/24	AS399728	P Foundation	P Foundation	256
2620:98:e005::/48	AS399728	P Foundation	P Foundation	~1×10²⁴
2620:98:e00c::/48	AS399728	P Foundation	P Foundation	~1×10²⁴
2620:98:e007::/48	AS399728	P Foundation	P Foundation	~1×10²⁴
2620:98:e00a::/48	AS399728	P Foundation	P Foundation	~1×10²⁴
38.87.123.0/24	AS399728	P Foundation	P Foundation	256
2620:98:e003::/48	AS399728	P Foundation	P Foundation	~1×10²⁴

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:       399728
ASName:         PFOUNDATION
ASHandle:       AS399728
RegDate:        2021-06-01
Updated:        2022-11-28
Ref:            https://rdap.arin.net/registry/autnum/399728


OrgName:        P Foundation
OrgId:          PF-547
Address:        700 12th St N.W
Address:        Suite 700 Desk 91978
City:           Washington
StateProv:      DC
PostalCode:     20005
Country:        US
RegDate:        2021-05-26
Updated:        2023-06-21
Comment:        https://p.foundation
Ref:            https://rdap.arin.net/registry/entity/PF-547


OrgAbuseHandle: NETWO9482-ARIN
OrgAbuseName:   Network Abuse
OrgAbusePhone:  +1-202-351-5555 
OrgAbuseEmail:  networkabuse@p.foundation
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETWO9482-ARIN

OrgTechHandle: NOC33311-ARIN
OrgTechName:   NOC
OrgTechPhone:  +1-202-351-5555 
OrgTechEmail:  noc@p.foundation
OrgTechRef:    https://rdap.arin.net/registry/entity/NOC33311-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" : "399728",
    "as_handle" : "AS399728",
    "as_name" : "PFOUNDATION",
    "tech_contacts" : [ "NOC33311-ARIN" ],
    "abuse_contacts" : [ "NETWO9482-ARIN" ],
    "date_created" : "2021-06-01",
    "date_updated" : "2022-11-28",
    "source" : "https://rdap.arin.net/registry/autnum/399728"
  } ],
  "organization" : {
    "handle" : "PF-547",
    "name" : "P Foundation",
    "address" : [ "700 12th St N.W", "Suite 700 Desk 91978", "Washington", "DC", "20005", "US" ],
    "street" : "12th St N.w",
    "city" : "Washington",
    "state" : "DC",
    "zip_code" : "20005",
    "country" : [ "US" ],
    "date_created" : "2021-05-26",
    "date_updated" : "2023-06-21",
    "source" : "https://rdap.arin.net/registry/entity/PF-547",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "NOC33311-ARIN",
    "name" : "NOC",
    "email" : [ "noc@p.foundation" ],
    "phone" : [ "+1-202-351-5555" ],
    "source" : "https://rdap.arin.net/registry/entity/NOC33311-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NETWO9482-ARIN",
    "name" : "Network Abuse",
    "email" : [ "networkabuse@p.foundation" ],
    "phone" : [ "+1-202-351-5555" ],
    "source" : "https://rdap.arin.net/registry/entity/NETWO9482-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS12552	GlobalConnect AB	SE
AS28792	Public Internet Ltd	GB
AS51907	Kanton Zug	CH
AS262589	SAMM TECNOLOGIA E TELECOMUNICACOES S.A	BR
AS14537	Continent 8 LLC	US
AS45352	IP ServerOne Solutions Sdn Bhd	MY
AS37468	Angola Cables	AO
AS199524	G-Core Labs S.A.	LU
AS34288	Kantonsschule Zug	CH
AS206735	Novelcomm LP	GR

Upstreams

AS Number	Description	Country
AS12552	GlobalConnect AB	SE
AS8708	DIGI ROMANIA S.A.	RO
AS7195	EDGEUNO S.A.S	CO
AS9002	RETN Limited	GB
AS25091	IP Max SA	CH
AS6939	Hurricane Electric LLC	US
AS6204	ZET.NET IP Transit	RO
AS29075	IELO LIAZO SERVICES SAS	FR
AS48362	Stadtwerke Feldkirch	AT
AS6057	Administracion Nacional de Telecomunicaciones	UY