Free network tools
AS WHOIS
Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
Network Report (All-in-one) BGP Looking Glass BGP Security Check RPKI Validator BGP Hijack & Leak Monitor ASN Intelligence Internet Outages & Anomalies Country Internet Report Domain Insights IP WHOIS AS WHOIS
AS25879
UPHSM-ASN-01 - UP Health System - Marquette Announcing routesAS nameUPHSM-ASN-01
OrganisationUP Health System - Marquette
Registry (RIR)ARIN
HandleAS25879
RangeAS25879
Registered14 Jun 2022
Last changed14 Jun 2022
1IPv4 prefixes
0IPv6 prefixes
1Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS46208 | PFNL-ASN - Peninsula Fiber Network, LLC | 223 |
Downstreams
None seen.
IPv4 prefixes (1)
RPKI-validate all prefixes of AS25879
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | UP Health System - Marquette | DMGHLDUHSM | 850 West Baraga Ave., Marquette, MI, 49855, United States | |
| dns, abuse, administrative, noc, technical, routing | Network Administrator | NETWO7726-ARIN | [email protected], [email protected], +1-906-449-4144 | 850 W. Baraga Ave., Marquette, MI, 49855, United States |
Raw registry response
{
"endAutnum": 25879,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-04-22T10:56:36-04:00"
},
{
"eventAction": "registration",
"eventDate": "2016-02-29T12:29:16-05:00"
}
],
"handle": "NETWO7726-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETWO7726-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/25879"
},
{
"href": "https://whois.arin.net/rest/poc/NETWO7726-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/25879"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"dns",
"abuse",
"administrative",
"noc",
"technical",
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "850 W. Baraga Ave.\nMarquette\nMI\n49855\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Network Administrator"
],
[
"org",
[],
"text",
"UP Health System - Marquette"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-906-449-4144"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2022-04-22T11:04:30-04:00"
},
{
"eventAction": "registration",
"eventDate": "2022-04-04T09:11:45-04:00"
}
],
"handle": "DMGHLDUHSM",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DMGHLDUHSM",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/25879"
},
{
"href": "https://whois.arin.net/rest/org/DMGHLDUHSM",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/25879"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"UP Health System - Marquette"
],
[
"adr",
{
"label": "850 West Baraga Ave.\nMarquette\nMI\n49855\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2022-06-14T06:55:32-04:00"
},
{
"eventAction": "registration",
"eventDate": "2022-06-14T06:55:32-04:00"
}
],
"handle": "AS25879",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/25879",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/25879"
},
{
"href": "https://whois.arin.net/rest/asn/AS25879",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/25879"
}
],
"name": "UPHSM-ASN-01",
"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/25879"
}
],
"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/25879"
}
],
"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": 25879,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.