What is ASN AS397945?

ASN AS397945 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS397945?

AS397945 is listed under Madrone Technology Group 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?

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AS397945 Madrone Technology Group Inc.

ASN Lookup Tool

Madrone Technology Group Inc. madrone.tech

US 2 Routes

AS Data

AS397945

AS397945 – Madrone Technology Group Inc.

AS Number	397945
AS Name	MTG
Organization	Madrone Technology Group Inc. (mtg-37)
Country	US
Website	madrone.tech
Number of IPv4 Routes	1
Number of IPv6 Routes	1
ASN type	ISP
Registry	ARIN
Date Allocated	2019-09-16

ASN Intelligence API for production workflows

Use ASN data for AS397945 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
23.141.176.0/24	AS397945	Madrone Technology Group Inc.	Madrone Technology Group Inc.	256
2602:fdb3::/36	AS397945	Madrone Technology Group Inc.	Madrone Technology Group Inc.	~5×10²⁷

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:       397945
ASName:         MTG
ASHandle:       AS397945
RegDate:        2019-09-16
Updated:        2019-09-16
Ref:            https://rdap.arin.net/registry/autnum/397945


OrgName:        Madrone Technology Group Inc.
OrgId:          MTG-37
Address:        PO Box 745
City:           Canby
StateProv:      OR
PostalCode:     97013
Country:        US
RegDate:        2019-04-05
Updated:        2024-11-25
Ref:            https://rdap.arin.net/registry/entity/MTG-37


OrgTechHandle: HARTA12-ARIN
OrgTechName:   Hart, Alex 
OrgTechPhone:  +1-971-801-7300 
OrgTechEmail:  noc@madrone.tech
OrgTechRef:    https://rdap.arin.net/registry/entity/HARTA12-ARIN

OrgAbuseHandle: HARTA12-ARIN
OrgAbuseName:   Hart, Alex 
OrgAbusePhone:  +1-971-801-7300 
OrgAbuseEmail:  noc@madrone.tech
OrgAbuseRef:    https://rdap.arin.net/registry/entity/HARTA12-ARIN

OrgDNSHandle: HARTA12-ARIN
OrgDNSName:   Hart, Alex 
OrgDNSPhone:  +1-971-801-7300 
OrgDNSEmail:  noc@madrone.tech
OrgDNSRef:    https://rdap.arin.net/registry/entity/HARTA12-ARIN

OrgNOCHandle: HARTA12-ARIN
OrgNOCName:   Hart, Alex 
OrgNOCPhone:  +1-971-801-7300 
OrgNOCEmail:  noc@madrone.tech
OrgNOCRef:    https://rdap.arin.net/registry/entity/HARTA12-ARIN

OrgRoutingHandle: HARTA12-ARIN
OrgRoutingName:   Hart, Alex 
OrgRoutingPhone:  +1-971-801-7300 
OrgRoutingEmail:  noc@madrone.tech
OrgRoutingRef:    https://rdap.arin.net/registry/entity/HARTA12-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" : "397945",
    "as_handle" : "AS397945",
    "as_name" : "MTG",
    "admin_contacts" : [ "HARTA12-ARIN" ],
    "tech_contacts" : [ "HARTA12-ARIN", "HARTA12-ARIN" ],
    "abuse_contacts" : [ "HARTA12-ARIN" ],
    "date_created" : "2019-09-16",
    "date_updated" : "2019-09-16",
    "source" : "https://rdap.arin.net/registry/autnum/397945"
  } ],
  "organization" : {
    "handle" : "MTG-37",
    "name" : "Madrone Technology Group Inc.",
    "address" : [ "PO Box 745", "Canby", "OR", "97013", "US" ],
    "city" : "Canby",
    "state" : "OR",
    "zip_code" : "97013",
    "country" : [ "US" ],
    "date_created" : "2019-04-05",
    "date_updated" : "2024-11-25",
    "source" : "https://rdap.arin.net/registry/entity/MTG-37",
    "addressCountry" : "US"
  },
  "administrative_contacts" : [ {
    "handle" : "HARTA12-ARIN",
    "name" : "Hart, Alex",
    "email" : [ "noc@madrone.tech" ],
    "phone" : [ "+1-971-801-7300" ],
    "source" : "https://rdap.arin.net/registry/entity/HARTA12-ARIN"
  } ],
  "technical_contacts" : [ {
    "handle" : "HARTA12-ARIN",
    "name" : "Hart, Alex",
    "email" : [ "noc@madrone.tech" ],
    "phone" : [ "+1-971-801-7300" ],
    "source" : "https://rdap.arin.net/registry/entity/HARTA12-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "HARTA12-ARIN",
    "name" : "Hart, Alex",
    "email" : [ "noc@madrone.tech" ],
    "phone" : [ "+1-971-801-7300" ],
    "source" : "https://rdap.arin.net/registry/entity/HARTA12-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS3701	University of Oregon	US
AS6423	Digital Fortress	US
AS36236	NetActuate, Inc	US
AS53597	Hoyos Consulting LLC	US
AS1299	Arelion Sweden AB	SE
AS6939	Hurricane Electric LLC	US
AS11404	Wave Broadband	US
AS32913	Actual Broadband	US
AS174	Cogent Communications, LLC	US

Upstreams

AS Number	Description	Country
AS1299	Arelion Sweden AB	SE
AS6939	Hurricane Electric LLC	US
AS174	Cogent Communications, LLC	US