What is ASN AS400555?

ASN AS400555 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS400555?

AS400555 is listed under Isogram Inc..

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.

AS400555 Isogram Inc. | IPGeolocation.io

ASN Lookup Tool

Isogram Inc. isogram.com

US 3 Routes

AS Data

AS400555

AS400555 – Isogram Inc.

AS Number	400555
AS Name	ISOGRAM
Organization	Isogram Inc. (isogr)
Country	US
Website	isogram.com
Number of IPv4 Routes	2
Number of IPv6 Routes	1
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2022-03-22

ASN Intelligence API for production workflows

Use ASN data for AS400555 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
206.168.204.0/24	AS400555	Isogram Inc.	Isogram Inc.	256
2606:c2c0::/32	AS400555	Isogram Inc.	Isogram Inc.	~79×10²⁷
23.135.200.0/24	AS400555	Isogram Inc.	Isogram Inc.	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:       400555
ASName:         ISOGRAM
ASHandle:       AS400555
RegDate:        2022-03-22
Updated:        2026-04-09
Ref:            https://rdap.arin.net/registry/autnum/400555


OrgName:        Isogram Inc.
OrgId:          ISOGR
Address:        2261 Market Street STE 10935
City:           San Francisco
StateProv:      CA
PostalCode:     94114
Country:        US
RegDate:        2024-06-28
Updated:        2024-07-15
Comment:        Partners and customers who require 24/7 access to this contact should email ahead of time for their emails to be prioritized. Otherwise, your request will be responded to during business hours only. Standard hours 7:00 AM to 11:00 PM California time.
Ref:            https://rdap.arin.net/registry/entity/ISOGR


OrgDNSHandle: NETEN32-ARIN
OrgDNSName:   NETENG
OrgDNSPhone:  +1-805-476-4726 
OrgDNSEmail:  neteng@isogram.com
OrgDNSRef:    https://rdap.arin.net/registry/entity/NETEN32-ARIN

OrgRoutingHandle: NOC33427-ARIN
OrgRoutingName:   NOC
OrgRoutingPhone:  +1-805-476-4726 
OrgRoutingEmail:  noc@isogram.com
OrgRoutingRef:    https://rdap.arin.net/registry/entity/NOC33427-ARIN

OrgNOCHandle: NOC33427-ARIN
OrgNOCName:   NOC
OrgNOCPhone:  +1-805-476-4726 
OrgNOCEmail:  noc@isogram.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/NOC33427-ARIN

OrgAbuseHandle: NETEN32-ARIN
OrgAbuseName:   NETENG
OrgAbusePhone:  +1-805-476-4726 
OrgAbuseEmail:  neteng@isogram.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/NETEN32-ARIN

OrgTechHandle: NETEN32-ARIN
OrgTechName:   NETENG
OrgTechPhone:  +1-805-476-4726 
OrgTechEmail:  neteng@isogram.com
OrgTechRef:    https://rdap.arin.net/registry/entity/NETEN32-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" : "400555",
    "as_handle" : "AS400555",
    "as_name" : "ISOGRAM",
    "admin_contacts" : [ "NETEN32-ARIN" ],
    "tech_contacts" : [ "NOC33427-ARIN", "NETEN32-ARIN" ],
    "abuse_contacts" : [ "NETEN32-ARIN" ],
    "date_created" : "2022-03-22",
    "date_updated" : "2026-04-09",
    "source" : "https://rdap.arin.net/registry/autnum/400555"
  } ],
  "organization" : {
    "handle" : "ISOGR",
    "name" : "Isogram Inc.",
    "address" : [ "2261 Market Street STE 10935", "San Francisco", "CA", "94114", "US" ],
    "street" : "Market Street",
    "city" : "San Francisco",
    "state" : "CA",
    "zip_code" : "94114",
    "country" : [ "US" ],
    "date_created" : "2024-06-28",
    "date_updated" : "2024-07-15",
    "source" : "https://rdap.arin.net/registry/entity/ISOGR",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "NETEN32-ARIN",
    "name" : "NETENG",
    "email" : [ "neteng@isogram.com" ],
    "phone" : [ "+1-805-476-4726" ],
    "source" : "https://rdap.arin.net/registry/entity/NETEN32-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "NOC33427-ARIN",
    "name" : "NOC",
    "email" : [ "noc@isogram.com" ],
    "phone" : [ "+1-805-476-4726" ],
    "source" : "https://rdap.arin.net/registry/entity/NOC33427-ARIN"
  }, {
    "handle" : "NETEN32-ARIN",
    "name" : "NETENG",
    "email" : [ "neteng@isogram.com" ],
    "phone" : [ "+1-805-476-4726" ],
    "source" : "https://rdap.arin.net/registry/entity/NETEN32-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "NETEN32-ARIN",
    "name" : "NETENG",
    "email" : [ "neteng@isogram.com" ],
    "phone" : [ "+1-805-476-4726" ],
    "source" : "https://rdap.arin.net/registry/entity/NETEN32-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS58057	Securebit AG	CH
AS398447	OHANACRAFT, LLC	US
AS35008	Kerfuffle, LLC	US
AS6939	Hurricane Electric LLC	US
AS8298	IPng Networks GmbH	CH
AS400587	Ryamer, LLC	US
AS22296	Vorsk LLC	US
AS52025	ParadoxNetworks Limited	GB
AS36236	NetActuate, Inc	US
AS53597	Hoyos Consulting LLC	US

Upstreams

AS Number	Description	Country
AS58057	Securebit AG	CH
AS53356	Free Range Cloud Hosting Inc.	CA
AS6939	Hurricane Electric LLC	US
AS8298	IPng Networks GmbH	CH
AS400587	Ryamer, LLC	US