ASN AS21700 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS21700?

AS21700 is listed under Neptune Networks, 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?

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.

AS21700 Neptune Networks, LLC

ASN Lookup Tool

Neptune Networks, LLC neptunenetworks.com

US 10 Routes

AS Data

AS21700

AS21700 – Neptune Networks, LLC

AS Number	21700
AS Name	NEPTUNE-NETWORKS
Organization	Neptune Networks, LLC (nnl-66)
Country	US
Website	neptunenetworks.com
Number of IPv4 Routes	8
Number of IPv6 Routes	2
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2020-12-04

ASN Intelligence API for production workflows

Use ASN data for AS21700 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
2606:f1c0::/32	AS21700	Neptune Networks, LLC	T&E ENTITIES, Inc	~79×10²⁷
23.157.160.0/24	AS21700	Neptune Networks, LLC	Neptune Networks, LLC	256
2602:fe2e::/37	AS21700	Neptune Networks, LLC	Neptune Networks, LLC	~2×10²⁷
157.254.142.0/24	AS21700	Neptune Networks, LLC	Neptune Networks, LLC	256
216.74.121.0/24	AS21700	Neptune Networks, LLC	Neptune Networks, LLC	256
209.151.100.0/22	AS21700	Neptune Networks, LLC	Neptune Networks, LLC	1024
216.126.57.0/24	AS21700	Neptune Networks, LLC	Neptune Networks, LLC	256
172.82.22.0/23	AS21700	Neptune Networks, LLC	Neptune Networks, LLC	512
192.109.165.0/24	AS21700	Neptune Networks, LLC	Neptune Networks, LLC	256
159.148.114.0/24	AS21700	Neptune Networks, LLC	Neptune Networks, 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:       21700
ASName:         NEPTUNE-NETWORKS
ASHandle:       AS21700
RegDate:        2020-12-04
Updated:        2020-12-04
Ref:            https://rdap.arin.net/registry/autnum/21700


OrgName:        Neptune Networks, LLC
OrgId:          NNL-66
Address:        PO Box 220284
City:           Brooklyn
StateProv:      NY
PostalCode:     11222
Country:        US
RegDate:        2020-06-04
Updated:        2020-08-05
Ref:            https://rdap.arin.net/registry/entity/NNL-66


OrgNOCHandle: NOC32887-ARIN
OrgNOCName:   noc
OrgNOCPhone:  +1-860-373-0060 
OrgNOCEmail:  noc@neptunenetworks.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC32887-ARIN

OrgTechHandle: NOC32887-ARIN
OrgTechName:   noc
OrgTechPhone:  +1-860-373-0060 
OrgTechEmail:  noc@neptunenetworks.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NOC32887-ARIN

OrgAbuseHandle: ABUSE7300-ARIN
OrgAbuseName:   Abuse
OrgAbusePhone:  +1-860-373-0060 
OrgAbuseEmail:  abuse@neptunenetworks.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE7300-ARIN

OrgDNSHandle: NOC32887-ARIN
OrgDNSName:   noc
OrgDNSPhone:  +1-860-373-0060 
OrgDNSEmail:  noc@neptunenetworks.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/NOC32887-ARIN

OrgRoutingHandle: NOC32887-ARIN
OrgRoutingName:   noc
OrgRoutingPhone:  +1-860-373-0060 
OrgRoutingEmail:  noc@neptunenetworks.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NOC32887-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" : "21700",
    "as_handle" : "AS21700",
    "as_name" : "NEPTUNE-NETWORKS",
    "admin_contacts" : [ "NOC32887-ARIN" ],
    "tech_contacts" : [ "NOC32887-ARIN", "NOC32887-ARIN" ],
    "abuse_contacts" : [ "ABUSE7300-ARIN" ],
    "date_created" : "2020-12-04",
    "date_updated" : "2020-12-04",
    "source" : "https://rdap.arin.net/registry/autnum/21700"
  } ],
  "organization" : {
    "handle" : "NNL-66",
    "name" : "Neptune Networks, LLC",
    "address" : [ "PO Box 220284", "Brooklyn", "NY", "11222", "US" ],
    "city" : "Brooklyn",
    "state" : "NY",
    "zip_code" : "11222",
    "country" : [ "US" ],
    "date_created" : "2020-06-04",
    "date_updated" : "2020-08-05",
    "source" : "https://rdap.arin.net/registry/entity/NNL-66",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "NOC32887-ARIN",
    "name" : "noc",
    "email" : [ "noc@neptunenetworks.com" ],
    "phone" : [ "+1-860-373-0060" ],
    "source" : "https://rdap.arin.net/registry/entity/NOC32887-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "NOC32887-ARIN",
    "name" : "noc",
    "email" : [ "noc@neptunenetworks.com" ],
    "phone" : [ "+1-860-373-0060" ],
    "source" : "https://rdap.arin.net/registry/entity/NOC32887-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "ABUSE7300-ARIN",
    "name" : "Abuse",
    "email" : [ "abuse@neptunenetworks.com" ],
    "phone" : [ "+1-860-373-0060" ],
    "source" : "https://rdap.arin.net/registry/entity/ABUSE7300-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS397031	GALAXYGATE, LLC	US
AS216096	Alex Terrats Ciberseguretat SLU	AD
AS262589	SAMM TECNOLOGIA E TELECOMUNICACOES S.A	BR
AS13030	Init7 (Switzerland) Ltd.	CH
AS26548	PureVoltage Hosting Inc.	US
AS286	GTT Communications Inc.	US
AS14537	Continent 8 LLC	US
AS37468	Angola Cables	AO
AS199524	G-Core Labs S.A.	LU
AS959	OHANACRAFT, LLC	US

Upstreams

AS Number	Description	Country
AS7195	EDGEUNO S.A.S	CO
AS9002	RETN Limited	GB
AS263444	Open X Tecnologia Ltda	BR
AS6939	Hurricane Electric LLC	US
AS8359	MTS PJSC	RU
AS286	GTT Communications Inc.	US
AS174	Cogent Communications, LLC	US
AS13030	Init7 Switzerland Ltd.	CH
AS33891	Core Backbone GmbH	DE
AS41327	Fiber Telecom S.p.A.	IT

Downstreams

AS Number	Description	Country
AS216096	Alex Terrats Ciberseguretat SLU	AD
AS399914	N LAB	US
AS401227	Jouleworks	US
AS207890	Andrew Williams	GB
AS46983	crunchdev LLC	US
AS53343	sc Network	US
AS152848	asdf.hk	HK
AS213092	Acrion International Limited	GB
AS959	OHANACRAFT, LLC	US
AS400312	KHITOMER NETWORKS, LLC	US