What is ASN AS400940?

ASN AS400940 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS400940?

AS400940 is listed under Railway.

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.

AS400940 Railway | IPGeolocation.io

ASN Lookup Tool

Railway railway.app

US 17 Routes

AS Data

AS400940

AS400940 – Railway

AS Number	400940
AS Name	RAILWAY
Organization	Railway (rc-1550)
Country	US
Website	railway.app
Number of IPv4 Routes	10
Number of IPv6 Routes	7
ASN type	ISP
Registry	ARIN
Date Allocated	2024-02-17

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Use ASN data for AS400940 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
2607:99c0:200::/40	AS400940	Railway	Railway	~309×10²⁴
2607:99c0:300::/40	AS400940	Railway	Railway	~309×10²⁴
152.55.180.0/22	AS400940	Railway	Railway	1024
2607:99c0:800::/40	AS400940	Railway	Railway	~309×10²⁴
2607:99c0:900::/40	AS400940	Railway	Railway	~309×10²⁴
66.33.23.0/24	AS400940	Railway	Railway	256
162.220.234.0/23	AS400940	Railway	Railway	512
162.220.232.0/23	AS400940	Railway	Railway	512
152.55.184.0/22	AS400940	Railway	Railway	1024
152.55.176.0/22	AS400940	Railway	Railway	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:       400940
ASName:         RAILWAY
ASHandle:       AS400940
RegDate:        2024-02-17
Updated:        2024-11-07
Comment:        https://railway.com
Ref:            https://rdap.arin.net/registry/autnum/400940


OrgName:        Railway
OrgId:          RC-1550
Address:        548 Market St
Address:        PMB 68956
City:           San Francisco
StateProv:      CA
PostalCode:     94104
Country:        US
RegDate:        2023-10-18
Updated:        2024-11-04
Comment:        https://railway.com
Ref:            https://rdap.arin.net/registry/entity/RC-1550


OrgTechHandle: RAILW-ARIN
OrgTechName:   Railway-Team
OrgTechPhone:  +1-415-707-7675 
OrgTechEmail:  dc-ops@railway.com
OrgTechRef:    https://rdap.arin.net/registry/entity/RAILW-ARIN

OrgNOCHandle: RAILW-ARIN
OrgNOCName:   Railway-Team
OrgNOCPhone:  +1-415-707-7675 
OrgNOCEmail:  dc-ops@railway.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/RAILW-ARIN

OrgDNSHandle: RAILW-ARIN
OrgDNSName:   Railway-Team
OrgDNSPhone:  +1-415-707-7675 
OrgDNSEmail:  dc-ops@railway.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/RAILW-ARIN

OrgAbuseHandle: ABUSE8954-ARIN
OrgAbuseName:   Abuse-Role
OrgAbusePhone:  +1-415-707-7675 
OrgAbuseEmail:  abuse@railway.app
OrgAbuseRef:    https://rdap.arin.net/registry/entity/ABUSE8954-ARIN

OrgRoutingHandle: RAILW-ARIN
OrgRoutingName:   Railway-Team
OrgRoutingPhone:  +1-415-707-7675 
OrgRoutingEmail:  dc-ops@railway.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/RAILW-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" : "400940",
    "as_handle" : "AS400940",
    "as_name" : "RAILWAY",
    "admin_contacts" : [ "RAILW-ARIN" ],
    "tech_contacts" : [ "RAILW-ARIN", "RAILW-ARIN" ],
    "abuse_contacts" : [ "ABUSE8954-ARIN" ],
    "date_created" : "2024-02-17",
    "date_updated" : "2024-11-07",
    "source" : "https://rdap.arin.net/registry/autnum/400940"
  } ],
  "organization" : {
    "handle" : "RC-1550",
    "name" : "Railway",
    "address" : [ "548 Market St", "PMB 68956", "San Francisco", "CA", "94104", "US" ],
    "street" : "Market St",
    "city" : "San Francisco",
    "state" : "CA",
    "zip_code" : "94104",
    "country" : [ "US" ],
    "date_created" : "2023-10-18",
    "date_updated" : "2024-11-04",
    "source" : "https://rdap.arin.net/registry/entity/RC-1550",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "RAILW-ARIN",
    "name" : "Railway-Team",
    "email" : [ "dc-ops@railway.com" ],
    "phone" : [ "+1-415-707-7675" ],
    "source" : "https://rdap.arin.net/registry/entity/RAILW-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "RAILW-ARIN",
    "name" : "Railway-Team",
    "email" : [ "dc-ops@railway.com" ],
    "phone" : [ "+1-415-707-7675" ],
    "source" : "https://rdap.arin.net/registry/entity/RAILW-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "ABUSE8954-ARIN",
    "name" : "Abuse-Role",
    "email" : [ "abuse@railway.app" ],
    "phone" : [ "+1-415-707-7675" ],
    "source" : "https://rdap.arin.net/registry/entity/ABUSE8954-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS7195	EDGEUNO S.A.S	CO
AS64049	Reliance Jio Infocomm Pte Ltd Singapore	SG
AS262589	SAMM TECNOLOGIA E TELECOMUNICACOES S.A	BR
AS63956	5G NETWORK OPERATIONS PTY LTD	AU
AS3737	PenTeleData Inc.	US
AS6939	Hurricane Electric LLC	US
AS38880	Micron21 Datacentre Pty Ltd	AU
AS14537	Continent 8 LLC	US
AS45352	IP ServerOne Solutions Sdn Bhd	MY
AS4229	Zenlayer Inc	US

Upstreams

AS Number	Description	Country
AS60068	Datacamp Limited	GB
AS7195	EDGEUNO S.A.S	CO
AS6939	Hurricane Electric LLC	US
AS6057	Administracion Nacional de Telecomunicaciones	UY
AS2914	NTT America, Inc.	US
AS33891	Core Backbone GmbH	DE
AS17557	Pakistan Telecommunication Company Limited	PK
AS37468	Angola Cables	AO
AS13335	Cloudflare, Inc.	US
AS15802	Emirates Integrated Telecommunications Company PJSC	AE