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Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
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AS40043
LIFESPAN - Brown University Health Announcing routesAS nameLIFESPAN
OrganisationBrown University Health
Registry (RIR)ARIN
HandleAS40043
RangeAS40043
Registered12 Jun 2006
Last changed19 Apr 2024
Abuse contact[email protected]
3IPv4 prefixes
0IPv6 prefixes
1Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS14325 | OSHEAN - OSHEAN, Inc. | 253 |
Downstreams
None seen.
IPv4 prefixes (3)
RPKI-validate all prefixes of AS40043
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Brown University Health | LIFES | 167 Point Street, Providence, RI, 02903, United States | |
| noc, administrative | Network Administrator | NETWO9251-ARIN | [email protected], +1-401-444-9773 | 167 Point St, Providence, RI, 02903, United States |
| routing, technical, dns | STEPHEN RICCARDI | RICCA10-ARIN | [email protected], +1-401-606-0230 | 167 Point Street, Providence, RI, 02903, United States |
| technical, dns, abuse, routing | Gregory Michael Paris | GMP25-ARIN | [email protected], +1-401-444-3448 | 167 Point St, Providence, RI, 02903, United States |
| routing, dns, technical | Steve Lessard | LESSA22-ARIN | [email protected], [email protected], +1-401-444-8576 | 15 Lasalle Sq, Providence, RI, 02903, United States |
| technical | STEPHEN RICCARDI | RICCA10-ARIN | [email protected], +1-401-606-0230 | 167 Point Street, Providence, RI, 02903, United States |
| technical | Gregory Michael Paris | GMP25-ARIN | [email protected], +1-401-444-3448 | 167 Point St, Providence, RI, 02903, United States |
| technical | Steve Lessard | LESSA22-ARIN | [email protected], [email protected], +1-401-444-8576 | 15 Lasalle Sq, Providence, RI, 02903, United States |
Raw registry response
{
"endAutnum": 40043,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-02-17T09:17:14-05:00"
},
{
"eventAction": "registration",
"eventDate": "2020-06-23T11:36:24-04:00"
}
],
"handle": "NETWO9251-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETWO9251-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40043"
},
{
"href": "https://whois.arin.net/rest/poc/NETWO9251-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40043"
}
],
"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 2026-02-17"
],
"title": "Unvalidated POC"
}
],
"roles": [
"noc",
"administrative"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "167 Point St\nProvidence\nRI\n02903\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Network Administrator"
],
[
"org",
[],
"text",
"Lifespan"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-401-444-9773"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-11T12:19:01-04:00"
},
{
"eventAction": "registration",
"eventDate": "2021-06-09T08:56:45-04:00"
}
],
"handle": "RICCA10-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/RICCA10-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40043"
},
{
"href": "https://whois.arin.net/rest/poc/RICCA10-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40043"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"routing",
"technical",
"dns"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "167 Point Street\nProvidence\nRI\n02903\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"STEPHEN RICCARDI"
],
[
"n",
[],
"text",
[
"RICCARDI",
"STEPHEN",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-401-606-0230"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-06-10T09:22:47-04:00"
},
{
"eventAction": "registration",
"eventDate": "2020-06-09T14:49:33-04:00"
}
],
"handle": "GMP25-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/GMP25-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40043"
},
{
"href": "https://whois.arin.net/rest/poc/GMP25-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40043"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"dns",
"abuse",
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "167 Point St\nProvidence\nRI\n02903\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Gregory Michael Paris"
],
[
"n",
[],
"text",
[
"Paris",
"Gregory",
"Michael",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-401-444-3448"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-10T11:21:01-04:00"
},
{
"eventAction": "registration",
"eventDate": "2020-06-25T09:04:56-04:00"
}
],
"handle": "LESSA22-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/LESSA22-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40043"
},
{
"href": "https://whois.arin.net/rest/poc/LESSA22-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40043"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"routing",
"dns",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "15 Lasalle Sq\nProvidence\nRI\n02903\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Steve Lessard"
],
[
"n",
[],
"text",
[
"Lessard",
"Steve",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-401-444-8576"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-04-30T16:03:51-04:00"
},
{
"eventAction": "registration",
"eventDate": "1992-01-13T00:00:00-05:00"
}
],
"handle": "LIFES",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/LIFES",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40043"
},
{
"href": "https://whois.arin.net/rest/org/LIFES",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40043"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Brown University Health"
],
[
"adr",
{
"label": "167 Point Street\nProvidence\nRI\n02903\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-11T12:19:01-04:00"
},
{
"eventAction": "registration",
"eventDate": "2021-06-09T08:56:45-04:00"
}
],
"handle": "RICCA10-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/RICCA10-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40043"
},
{
"href": "https://whois.arin.net/rest/poc/RICCA10-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40043"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "167 Point Street\nProvidence\nRI\n02903\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"STEPHEN RICCARDI"
],
[
"n",
[],
"text",
[
"RICCARDI",
"STEPHEN",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-401-606-0230"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-06-10T09:22:47-04:00"
},
{
"eventAction": "registration",
"eventDate": "2020-06-09T14:49:33-04:00"
}
],
"handle": "GMP25-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/GMP25-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40043"
},
{
"href": "https://whois.arin.net/rest/poc/GMP25-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40043"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "167 Point St\nProvidence\nRI\n02903\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Gregory Michael Paris"
],
[
"n",
[],
"text",
[
"Paris",
"Gregory",
"Michael",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-401-444-3448"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-10T11:21:01-04:00"
},
{
"eventAction": "registration",
"eventDate": "2020-06-25T09:04:56-04:00"
}
],
"handle": "LESSA22-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/LESSA22-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40043"
},
{
"href": "https://whois.arin.net/rest/poc/LESSA22-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40043"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "15 Lasalle Sq\nProvidence\nRI\n02903\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Steve Lessard"
],
[
"n",
[],
"text",
[
"Lessard",
"Steve",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-401-444-8576"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-04-19T08:45:07-04:00"
},
{
"eventAction": "registration",
"eventDate": "2006-06-12T14:12:34-04:00"
}
],
"handle": "AS40043",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/40043",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/40043"
},
{
"href": "https://whois.arin.net/rest/asn/AS40043",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/40043"
}
],
"name": "LIFESPAN",
"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/40043"
}
],
"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/40043"
}
],
"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": 40043,
"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.