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AS400523 InterSystems Corporation

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

InterSystems Corporation intersystems.com

US 5 Routes

AS Data

AS400523

AS400523 – InterSystems Corporation

AS Number	400523
AS Name	INTERSYSTEMS
Organization	InterSystems Corporation (inters-5)
Country	US
Website	intersystems.com
Number of IPv4 Routes	5
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2023-09-21

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Use ASN data for AS400523 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
128.177.43.0/24	AS400523	InterSystems Corporation	Akamai	256
64.6.37.0/24	AS400523	InterSystems Corporation	InterSystems Corporation	256
64.6.36.0/23	AS400523	InterSystems Corporation	InterSystems Corporation	512
64.6.36.0/24	AS400523	InterSystems Corporation	InterSystems Corporation	256
208.185.132.0/24	AS400523	InterSystems Corporation	Intersystems Corporation ZNS	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:       400523
ASName:         INTERSYSTEMS
ASHandle:       AS400523
RegDate:        2023-09-21
Updated:        2023-09-21
Comment:        www.intersystems.com
Ref:            https://rdap.arin.net/registry/autnum/400523


OrgName:        InterSystems Corporation
OrgId:          INTERS-5
Address:        InterSystems Corporation
Address:        One Congress Street
City:           Boston
StateProv:      MA
PostalCode:     02114
Country:        US
RegDate:        1993-04-07
Updated:        2025-04-04
Ref:            https://rdap.arin.net/registry/entity/INTERS-5


OrgTechHandle: TECHS142-ARIN
OrgTechName:   techs
OrgTechPhone:  +1-617-621-0600 
OrgTechEmail:  techs@intersystems.com
OrgTechRef:    https://rdap.arin.net/registry/entity/TECHS142-ARIN

OrgAbuseHandle: TECHS142-ARIN
OrgAbuseName:   techs
OrgAbusePhone:  +1-617-621-0600 
OrgAbuseEmail:  techs@intersystems.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/TECHS142-ARIN

OrgTechHandle: CLARK1793-ARIN
OrgTechName:   Clark, Anthony 
OrgTechPhone:  +1-617-250-4442 
OrgTechEmail:  aclark@intersystems.com
OrgTechRef:    https://rdap.arin.net/registry/entity/CLARK1793-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" : "400523",
    "as_handle" : "AS400523",
    "as_name" : "INTERSYSTEMS",
    "tech_contacts" : [ "TECHS142-ARIN", "CLARK1793-ARIN" ],
    "abuse_contacts" : [ "TECHS142-ARIN" ],
    "date_created" : "2023-09-21",
    "date_updated" : "2023-09-21",
    "source" : "https://rdap.arin.net/registry/autnum/400523"
  } ],
  "organization" : {
    "handle" : "INTERS-5",
    "name" : "InterSystems Corporation",
    "address" : [ "InterSystems Corporation", "One Congress Street", "Boston", "MA", "02114", "US" ],
    "street" : "Congress Street",
    "city" : "Boston",
    "state" : "MA",
    "zip_code" : "02114",
    "country" : [ "US" ],
    "date_created" : "1993-04-07",
    "date_updated" : "2025-04-04",
    "source" : "https://rdap.arin.net/registry/entity/INTERS-5",
    "addressCountry" : "US"
  },
  "technical_contacts" : [ {
    "handle" : "TECHS142-ARIN",
    "name" : "techs",
    "email" : [ "techs@intersystems.com" ],
    "phone" : [ "+1-617-621-0600" ],
    "source" : "https://rdap.arin.net/registry/entity/TECHS142-ARIN"
  }, {
    "handle" : "CLARK1793-ARIN",
    "name" : "Clark, Anthony",
    "email" : [ "aclark@intersystems.com" ],
    "phone" : [ "+1-617-250-4442" ],
    "source" : "https://rdap.arin.net/registry/entity/CLARK1793-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "TECHS142-ARIN",
    "name" : "techs",
    "email" : [ "techs@intersystems.com" ],
    "phone" : [ "+1-617-621-0600" ],
    "source" : "https://rdap.arin.net/registry/entity/TECHS142-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS49915	Megaport UK Limited	GB
AS7018	AT&T Enterprises, LLC	US
AS49915	Megaport (UK) Limited	GB
AS6461	Zayo Bandwidth	US

Upstreams

AS Number	Description	Country
AS49915	Megaport UK Limited	GB
AS7018	AT&T Enterprises, LLC	US
AS6461	Zayo Bandwidth	US

Frequently Asked Questions

What is ASN AS400523?

ASN AS400523 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS400523?

AS400523 is listed under InterSystems Corporation.

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.