What is ASN AS399429?

ASN AS399429 is an Autonomous System Number used to identify a network for BGP internet routing.

Who manages ASN AS399429?

AS399429 is listed under St. Joseph's Healthcare Hamilton.

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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AS399429 St. Joseph's Healthcare Hamilton

ASN Lookup Tool

St. Joseph's Healthcare Hamilton stjoes.ca

CA 31 Routes

AS Data

AS399429

AS399429 – St. Joseph's Healthcare Hamilton

AS Number	399429
AS Name	STJOES-HAM-01
Organization	St. Joseph's Healthcare Hamilton (sjhho)
Country	CA
Website	stjoes.ca
Number of IPv4 Routes	31
Number of IPv6 Routes	0
ASN type	BUSINESS
Registry	ARIN
Date Allocated	2021-03-10

ASN Intelligence API for production workflows

Use ASN data for AS399429 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route	Origin	Origin Name	ISP	# IPs
142.238.183.0/24	AS399429	St. Josephs Healthcare Hamilton	St. Joseph's Healthcare Hamilton	256
142.238.170.0/24	AS399429	St. Josephs Healthcare Hamilton	St. Joseph's Healthcare Hamilton	256
142.238.69.0/24	AS399429	St. Josephs Healthcare Hamilton	St. Joseph's Healthcare Hamilton	256
142.238.227.0/24	AS399429	St. Josephs Healthcare Hamilton	St. Joseph's Healthcare Hamilton	256
142.238.214.0/24	AS399429	St. Josephs Healthcare Hamilton	St. Joseph's Healthcare Hamilton	256
142.238.226.0/24	AS399429	St. Josephs Healthcare Hamilton	St. Joseph's Healthcare Hamilton	256
142.238.252.0/24	AS399429	St. Josephs Healthcare Hamilton	St. Joseph's Healthcare Hamilton	256
142.238.182.0/24	AS399429	St. Josephs Healthcare Hamilton	St. Joseph's Healthcare Hamilton	256
142.238.250.0/24	AS399429	St. Josephs Healthcare Hamilton	St. Joseph's Healthcare Hamilton	256
142.238.249.0/24	AS399429	St. Josephs Healthcare Hamilton	St. Joseph's Healthcare Hamilton	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:       399429
ASName:         STJOES-HAM-01
ASHandle:       AS399429
RegDate:        2021-03-10
Updated:        2021-03-10
Ref:            https://rdap.arin.net/registry/autnum/399429


OrgName:        St. Joseph's Healthcare Hamilton
OrgId:          SJHHO
Address:        Hamilton Ontario
Address:        50 Charlton Avenue East
City:           Hamilton
StateProv:      ON
PostalCode:     L8N-4A6
Country:        CA
RegDate:        1993-05-28
Updated:        2025-10-15
Ref:            https://rdap.arin.net/registry/entity/SJHHO


OrgTechHandle: FLETC93-ARIN
OrgTechName:   Fletcher, Shawn 
OrgTechPhone:  +1-905-522-1155 
OrgTechEmail:  sfletcher@stjoes.ca
OrgTechRef:    https://rdap.arin.net/registry/entity/FLETC93-ARIN

OrgAbuseHandle: FLETC93-ARIN
OrgAbuseName:   Fletcher, Shawn 
OrgAbusePhone:  +1-905-522-1155 
OrgAbuseEmail:  sfletcher@stjoes.ca
OrgAbuseRef:    https://rdap.arin.net/registry/entity/FLETC93-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" : "399429",
    "as_handle" : "AS399429",
    "as_name" : "STJOES-HAM-01",
    "tech_contacts" : [ "FLETC93-ARIN" ],
    "abuse_contacts" : [ "FLETC93-ARIN" ],
    "date_created" : "2021-03-10",
    "date_updated" : "2021-03-10",
    "source" : "https://rdap.arin.net/registry/autnum/399429"
  } ],
  "organization" : {
    "handle" : "SJHHO",
    "name" : "St. Joseph's Healthcare Hamilton",
    "address" : [ "Hamilton Ontario", "50 Charlton Avenue East", "Hamilton", "ON", "L8N-4A6", "CA" ],
    "street" : "Charlton Avenue East",
    "city" : "Hamilton",
    "state" : "ON",
    "zip_code" : "L8N-4A6",
    "country" : [ "CA" ],
    "date_created" : "1993-05-28",
    "date_updated" : "2025-10-15",
    "source" : "https://rdap.arin.net/registry/entity/SJHHO",
    "addressCountry" : "CA"
  },
  "technical_contacts" : [ {
    "handle" : "FLETC93-ARIN",
    "name" : "Fletcher, Shawn",
    "email" : [ "sfletcher@stjoes.ca" ],
    "phone" : [ "+1-905-522-1155" ],
    "source" : "https://rdap.arin.net/registry/entity/FLETC93-ARIN"
  } ],
  "abuse_contacts" : [ {
    "handle" : "FLETC93-ARIN",
    "name" : "Fletcher, Shawn",
    "email" : [ "sfletcher@stjoes.ca" ],
    "phone" : [ "+1-905-522-1155" ],
    "source" : "https://rdap.arin.net/registry/entity/FLETC93-ARIN"
  } ]
}

Peers

AS Number	Description	Country
AS11918	Diallog Telecommunications	CA
AS812	Rogers Communications Canada Inc.	CA
AS7992	Cogeco Connexion Inc.	CA

Upstreams

AS Number	Description	Country
AS11918	Diallog Telecommunications	CA
AS812	Rogers Communications Canada Inc.	CA
AS7992	Cogeco Connexion Inc.	CA