Organization
ArcelorMittal Dofasco G.P.
AMDOFASCO-ASN
Registered
Aug 01, 2024
2 years ago
IPv4 Prefixes
2
512 addresses
IPv6 Prefixes
0
BGP Neighbours
2
2 upstream/peer · 0 downstream
Registration
AS Number AS53609 AS Name AMDOFASCO-ASN Organization ArcelorMittal Dofasco G.P. Organization ID ACMAC Address 1330 Burlington Street East, Hamilton, ON, L8N 3J5, Canada Country Canada (CA) Registry ARIN Allocated Aug 01, 2024 Record Created Aug 01, 2024 Last Updated Aug 01, 2024 Status
active
WHOIS Server whois.arin.net AS Description AMDOFASCO-ASN - ArcelorMittal Dofasco G.P., CA Abuse Email [email protected] Abuse Phone +1-905-548-7200;ext6920 IPv4 Prefixes
2 prefixes · 512 addresses Routing data as of 2026-10-07 16:00 UTC
| Prefix | Range | Addresses |
|---|---|---|
| 142.153.3.0/24 | 142.153.3.0 – 142.153.3.255 | 256 |
| 192.139.152.0/24 | 192.139.152.0 – 192.139.152.255 | 256 |
IPv6 Prefixes
This AS does not currently announce any IPv6 prefixes.
BGP Neighbours
2 unique neighbours · 2 upstream/peer · 0 downstream. A neighbour can be seen on more than one side. Rows are ordered by AS paths: the number of BGP paths seen by RIPE RIS that contain the adjacency. Sightings count each IPv4/IPv6 route with the adjacency once per RIS peer that sees it (routes × peers), so they show how widely it is seen, not how many distinct routes it carries. Networks seen to the left of this AS in BGP paths, toward the route collectors — typically its transit providers (upstreams) and peers. Upstream & peer side (2)
Raw RDAP Response
{
"endAutnum": 53609,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2022-10-21T12:16:19-04:00"
},
{
"eventAction": "registration",
"eventDate": "2020-10-20T10:32:25-04:00"
}
],
"handle": "LLL24-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/LLL24-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/53609"
},
{
"href": "https://whois.arin.net/rest/poc/LLL24-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/53609"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2023-10-21"
],
"title": "Unvalidated POC"
}
],
"roles": [
"technical",
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1330 Burlington Street East\nHamilton\nON\nL8N 3J5\nCanada"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Louise Louise Lilly"
],
[
"n",
{},
"text",
[
"Lilly",
"Louise",
"Louise",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-905-548-7200;ext6920"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-11-19T09:18:39-05:00"
},
{
"eventAction": "registration",
"eventDate": "2020-10-20T11:37:58-04:00"
}
],
"handle": "TIZZA-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/TIZZA-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/53609"
},
{
"href": "https://whois.arin.net/rest/poc/TIZZA-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/53609"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"abuse",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1330 Burlington Street East\nHamilton\nON\nL8N 3J5\nCanada"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Mark Tizzard"
],
[
"n",
{},
"text",
[
"Tizzard",
"Mark",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-905-548-7200;ext3637"
],
[
"tel",
{
"type": [
"work",
"cell"
]
},
"text",
"+1-289-407-9897"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-08-20T13:28:04-04:00"
},
{
"eventAction": "registration",
"eventDate": "2021-06-22T09:15:59-04:00"
}
],
"handle": "ACMAC",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ACMAC",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/53609"
},
{
"href": "https://whois.arin.net/rest/org/ACMAC",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/53609"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"ArcelorMittal Dofasco G.P."
],
[
"adr",
{
"label": "1330 Burlington Street East\nHamilton\nON\nL8N 3J5\nCanada"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-08-01T07:06:45-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-08-01T07:06:45-04:00"
}
],
"handle": "AS53609",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/53609",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/53609"
},
{
"href": "https://whois.arin.net/rest/asn/AS53609",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/53609"
}
],
"name": "AMDOFASCO-ASN",
"notices": [
{
"description": [
"By using the ARIN RDAP/Whois service, you are agreeing to the RDAP/Whois Terms of Use"
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/tou/",
"rel": "terms-of-service",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/53609"
}
],
"title": "Terms of Service"
},
{
"description": [
"If you see inaccuracies in the results, please visit: "
],
"links": [
{
"href": "https://www.arin.net/resources/registry/whois/inaccuracy_reporting/",
"rel": "inaccuracy-report",
"type": "text/html",
"value": "https://rdap.arin.net/registry/autnum/53609"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"startAutnum": 53609,
"status": [
"active"
]
} Contact details of private individuals are redacted.