128.4.0.26
Education
Data retrieved at
Network
ASN
IP Range
Company
University of Delaware
Network
UDEL-DCN
Using networksdb.io for network lookups.
Hostname
Not available.
Type
Education
Handle
NET-128-4-0-0-1
Registered
1991-01-10
Last Changed
2026-06-29
View raw RDAP
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "128.4.0.0",
"length": 16
}
],
"endAddress": "128.4.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-28T14:54:29-04:00"
},
{
"eventAction": "registration",
"eventDate": "2010-06-15T07:43:46-04:00"
}
],
"handle": "NSS13-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NSS13-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
},
{
"href": "https://whois.arin.net/rest/poc/NSS13-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "192 South Chapel Street\nNewark\nDE\n19716\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Network and Systems Services"
],
[
"org",
{},
"text",
"University of Delaware"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-302-831-6000"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-10T08:34:25-05:00"
},
{
"eventAction": "registration",
"eventDate": "2009-08-07T07:54:03-04:00"
}
],
"handle": "UDELN-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UDELN-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
},
{
"href": "https://whois.arin.net/rest/poc/UDELN-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"noc",
"dns"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "Information Technologies\nNewark\nDE\n19716\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"UDel NOC"
],
[
"org",
{},
"text",
"University of Delaware"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-302-831-6000"
],
[
"tel",
{
"type": [
"work",
"fax"
]
},
"text",
"+1-302-831-3717"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-19T11:51:03-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-09-21T14:30:35-04:00"
}
],
"handle": "DAVIS2708-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DAVIS2708-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
},
{
"href": "https://whois.arin.net/rest/poc/DAVIS2708-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "192 S. Chapel St\nNewark\nDE\n19716\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Michael DAvis"
],
[
"n",
{},
"text",
[
"DAvis",
"Michael",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-302-831-6006"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-23T15:38:08-04:00"
},
{
"eventAction": "registration",
"eventDate": "2026-07-23T15:38:08-04:00"
}
],
"handle": "HUFFM208-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/HUFFM208-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
},
{
"href": "https://whois.arin.net/rest/poc/HUFFM208-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"dns",
"noc",
"abuse",
"technical",
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "192 South Chapel Street\nNewark\nDE\n19716\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Scott Huffman"
],
[
"n",
{},
"text",
[
"Huffman",
"Scott",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-302-831-7377"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-07-30T11:54:01-04:00"
},
{
"eventAction": "registration",
"eventDate": "2008-03-18T13:19:36-04:00"
}
],
"handle": "UNIVER-19-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/UNIVER-19-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
},
{
"href": "https://whois.arin.net/rest/org/UNIVER-19-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"University of Delaware"
],
[
"adr",
{
"label": "Information Technologies\n192 South Chapel Street\nNewark\nDE\n19716\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-19T11:51:03-04:00"
},
{
"eventAction": "registration",
"eventDate": "2023-09-21T14:30:35-04:00"
}
],
"handle": "DAVIS2708-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/DAVIS2708-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
},
{
"href": "https://whois.arin.net/rest/poc/DAVIS2708-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "192 S. Chapel St\nNewark\nDE\n19716\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Michael DAvis"
],
[
"n",
{},
"text",
[
"DAvis",
"Michael",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-302-831-6006"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-29T09:38:35-04:00"
},
{
"eventAction": "registration",
"eventDate": "2026-06-29T09:38:35-04:00"
}
],
"handle": "HUFFM207-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/HUFFM207-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
},
{
"href": "https://whois.arin.net/rest/poc/HUFFM207-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"noc",
"technical",
"abuse"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "192 S. Chapel St.\nNewark\nDE\n19716\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Scott Huffman"
],
[
"n",
{},
"text",
[
"Huffman",
"Scott",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-302-831-6006"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-29T09:51:17-04:00"
},
{
"eventAction": "registration",
"eventDate": "1991-01-10T00:00:00-05:00"
}
],
"handle": "NET-128-4-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/128.4.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
},
{
"href": "https://whois.arin.net/rest/net/NET-128-4-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.4.0.26"
}
],
"name": "UDEL-DCN",
"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/128.4.0.26"
}
],
"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/128.4.0.26"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-128-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "128.4.0.0",
"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
128.4.0.0/16
Authorized ASN
AS2, AS34
Abuse Contacts
IP Geolocation
Country
United States
City
Newark (📍 19711)
Delaware
Time Zone
America/New_York
Coordinates
39.7007, -75.7419
Continent
North America
European Union
No.
Phone prefix
+1
Currency
US Dollar (USD $)