138.49.0.18
Education
Data retrieved at
Network
ASN
IP Range
Company
University of Wisconsin System
Registrant
University of Wisconsin-La Crosse
UWLAX
Using networksdb.io for network lookups.
Hostname
Not available.
AS Domain
wisconsin.edu
Using host.io for pre-visualize domains.
Type
Education
Handle
NET-138-49-0-0-1
Registered
1990-02-06
Last Changed
2025-02-28
View raw RDAP
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"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "138.49.0.0",
"length": 16
}
],
"endAddress": "138.49.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-26T11:14:28-04:00"
},
{
"eventAction": "registration",
"eventDate": "2026-06-26T11:14:28-04:00"
}
],
"handle": "HAMEL38-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/HAMEL38-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/138.49.0.18"
},
{
"href": "https://whois.arin.net/rest/poc/HAMEL38-ARIN",
"rel": "alternate",
"type": "application/xml",
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}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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"status": [
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"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1725 State Street\nLa Crosse\nWI\n54601\nUnited States"
},
"text",
[
"",
"",
"",
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"",
""
]
],
[
"fn",
{},
"text",
"Ryan Hamel"
],
[
"n",
{},
"text",
[
"Hamel",
"Ryan",
"",
"",
""
]
],
[
"kind",
{},
"text",
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[
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{},
"text",
"[email protected]"
],
[
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"text",
"[email protected]"
],
[
"tel",
{
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"voice"
]
},
"text",
"+1-608-785-6618"
]
]
]
},
{
"events": [
{
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"eventDate": "2026-03-02T15:34:56-05:00"
},
{
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"eventDate": "2023-07-24T14:38:33-04:00"
}
],
"handle": "BORNH19-ARIN",
"links": [
{
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"type": "application/rdap+json",
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{
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"objectClassName": "entity",
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],
"status": [
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],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1725 State St\nLa Crosse\nWI\n54601\nUnited States"
},
"text",
[
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[
"fn",
{},
"text",
"Matthew Bornheimer"
],
[
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{},
"text",
[
"Bornheimer",
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"",
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""
]
],
[
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{},
"text",
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[
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{},
"text",
"[email protected]"
],
[
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{
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]
},
"text",
"+1-608-785-5473"
],
[
"tel",
{
"type": [
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"cell"
]
},
"text",
"+1-608-317-4428"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-30T12:08:28-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-02-14T10:34:27-05:00"
}
],
"handle": "UNIVER-287-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UNIVER-287-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/138.49.0.18"
},
{
"href": "https://whois.arin.net/rest/org/UNIVER-287-Z",
"rel": "alternate",
"type": "application/xml",
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}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"University of Wisconsin-La Crosse"
],
[
"adr",
{
"label": "1725 State Street\nLa Crosse\nWI\n54601\nUnited States"
},
"text",
[
"",
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"",
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]
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[
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{},
"text",
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},
{
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},
{
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"eventDate": "2023-07-24T14:38:33-04:00"
}
],
"handle": "BORNH19-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/BORNH19-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/138.49.0.18"
},
{
"href": "https://whois.arin.net/rest/poc/BORNH19-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/138.49.0.18"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"abuse",
"noc"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1725 State St\nLa Crosse\nWI\n54601\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Matthew Bornheimer"
],
[
"n",
{},
"text",
[
"Bornheimer",
"Matthew",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-608-785-5473"
],
[
"tel",
{
"type": [
"work",
"cell"
]
},
"text",
"+1-608-317-4428"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-02-28T15:17:53-05:00"
},
{
"eventAction": "registration",
"eventDate": "1990-02-06T00:00:00-05:00"
}
],
"handle": "NET-138-49-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/138.49.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/138.49.0.18"
},
{
"href": "https://whois.arin.net/rest/net/NET-138-49-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/138.49.0.18"
}
],
"name": "UWLAX",
"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/ip/138.49.0.18"
}
],
"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/ip/138.49.0.18"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-138-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "138.49.0.0",
"status": [
"active"
],
"type": "DIRECT ALLOCATION"
}
Security
No security threats detected for this IP.
VPN
Proxy
Tor
Hosting
Residential Proxy
Bogon
Abuser
Crawler
RPKI
RPKI Origin Validation
RPKI verifies that an IP prefix is legitimately announced by the authorized Autonomous System (ASN) using Route Origin Authorizations (ROAs).
Valid.
This prefix is correctly authorized by a valid ROA.
VALID
Validated Prefix
138.49.0.0/16
Authorized ASN
AS3128
Abuse Contacts
IP Geolocation
Country
United States
City
La Crosse (📍 54601)
Wisconsin
Time Zone
America/Chicago
Coordinates
43.8013, -91.2134
Continent
North America
European Union
No.
Phone prefix
+1
Currency
US Dollar (USD $)