138.67.0.42
Education
Data retrieved at
Network
ASN
IP Range
Company
Colorado School of Mines
Network
CSM-NET
Using networksdb.io for network lookups.
Hostname
Not available.
Type
Education
Handle
NET-138-67-0-0-1
Registered
1990-02-25
Last Changed
2023-12-29
View raw RDAP
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "138.67.0.0",
"length": 16
}
],
"endAddress": "138.67.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-08-11T13:34:36-04:00"
},
{
"eventAction": "registration",
"eventDate": "2005-10-17T15:49:36-04:00"
}
],
"handle": "PRR-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/PRR-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/138.67.0.42"
},
{
"href": "https://whois.arin.net/rest/poc/PRR-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/138.67.0.42"
}
],
"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 2024-08-10"
],
"title": "Unvalidated POC"
}
],
"roles": [
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],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1500 Illinois St.\nGolden\nCO\n80401\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Phillip R Romig"
],
[
"n",
{},
"text",
[
"Romig",
"Phillip",
"R",
"",
""
]
],
[
"kind",
{},
"text",
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],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-303-273-3866"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-23T11:39:32-05:00"
},
{
"eventAction": "registration",
"eventDate": "2023-08-11T13:51:42-04:00"
}
],
"handle": "HENDR304-ARIN",
"links": [
{
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"rel": "self",
"type": "application/rdap+json",
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},
{
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"value": "https://rdap.arin.net/registry/ip/138.67.0.42"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc",
"administrative",
"abuse",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
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},
"text",
[
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],
[
"fn",
{},
"text",
"George Hendricks"
],
[
"n",
{},
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[
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"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
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]
},
"text",
"+1-303-273-3000"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-10-04T15:56:18-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-10-04T15:56:18-04:00"
}
],
"handle": "CSM-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CSM-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/138.67.0.42"
},
{
"href": "https://whois.arin.net/rest/org/CSM-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/138.67.0.42"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
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],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Colorado School of Mines"
],
[
"adr",
{
"label": "Computing Center\n1500 Illinois Street\nGolden\nCO\n80401\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
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"eventDate": "2023-08-11T13:34:36-04:00"
},
{
"eventAction": "registration",
"eventDate": "2005-10-17T15:49:36-04:00"
}
],
"handle": "PRR-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/PRR-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/138.67.0.42"
},
{
"href": "https://whois.arin.net/rest/poc/PRR-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/138.67.0.42"
}
],
"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 2024-08-10"
],
"title": "Unvalidated POC"
}
],
"roles": [
"noc",
"technical",
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1500 Illinois St.\nGolden\nCO\n80401\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Phillip R Romig"
],
[
"n",
{},
"text",
[
"Romig",
"Phillip",
"R",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-303-273-3866"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-23T11:39:32-05:00"
},
{
"eventAction": "registration",
"eventDate": "2023-08-11T13:51:42-04:00"
}
],
"handle": "HENDR304-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/HENDR304-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/138.67.0.42"
},
{
"href": "https://whois.arin.net/rest/poc/HENDR304-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/138.67.0.42"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"noc",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1500 Illinois Street\nGolden\nCO\n80401\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"George Hendricks"
],
[
"n",
{},
"text",
[
"Hendricks",
"George",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-303-273-3000"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2023-12-29T15:30:35-05:00"
},
{
"eventAction": "registration",
"eventDate": "1990-02-25T00:00:00-05:00"
}
],
"handle": "NET-138-67-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/138.67.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/138.67.0.42"
},
{
"href": "https://whois.arin.net/rest/net/NET-138-67-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/138.67.0.42"
}
],
"name": "CSM-NET",
"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/138.67.0.42"
}
],
"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/138.67.0.42"
}
],
"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": "138.67.0.0",
"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
138.67.0.0/16
Authorized ASN
AS36704
Abuse Contacts
IP Geolocation
Country
United States
City
Denver (📍 80219)
Colorado
Time Zone
America/Denver
Coordinates
39.696, -105.0346
Continent
North America
European Union
No.
Phone prefix
+1
Currency
US Dollar (USD $)