128.57.0.1
ISP
Data retrieved at
Network
ASN
IP Range
Company
Shenandoah Cable Television LLC
Registrant
SRI International
DEMO-PR-2
Using networksdb.io for network lookups.
Hostname
Not available.
AS Domain
shentel.com
Using host.io for pre-visualize domains.
Type
ISP
Handle
NET-128-57-0-0-1
Registered
1984-11-09
Last Changed
2025-04-09
View raw RDAP
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "128.57.0.0",
"length": 16
}
],
"endAddress": "128.57.255.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-09-01T15:15:20-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-04-10T13:07:14-04:00"
}
],
"handle": "TOMAS90-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/TOMAS90-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.57.0.1"
},
{
"href": "https://whois.arin.net/rest/poc/TOMAS90-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.57.0.1"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"routing",
"abuse",
"dns",
"technical",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "333 Ravenswood Ave.\nMenlo Park\nCA\n94025\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"John Tomasetti"
],
[
"n",
{},
"text",
[
"Tomasetti",
"John",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-859-6166"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-29T13:30:09-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-04-08T19:51:25-04:00"
}
],
"handle": "MAMF-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MAMF-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.57.0.1"
},
{
"href": "https://whois.arin.net/rest/poc/MAMF-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.57.0.1"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"dns",
"technical",
"abuse",
"routing"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "333 Ravenswood Ave\n\nMenlo Park\nCA\n94025\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Mark Anthony Medrano Favis"
],
[
"n",
{},
"text",
[
"Favis",
"Mark Anthony ",
"Medrano",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-859-6499"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-12-01T13:38:33-05:00"
},
{
"eventAction": "registration",
"eventDate": "2023-10-30T10:52:34-04:00"
}
],
"handle": "SRIINT-Z",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SRIINT-Z",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.57.0.1"
},
{
"href": "https://whois.arin.net/rest/org/SRIINT-Z",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.57.0.1"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"SRI International"
],
[
"adr",
{
"label": "333 Ravenswood Avenue\nMenlo Park\nCA\n94025\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-06-29T13:30:09-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-04-08T19:51:25-04:00"
}
],
"handle": "MAMF-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MAMF-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.57.0.1"
},
{
"href": "https://whois.arin.net/rest/poc/MAMF-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.57.0.1"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "333 Ravenswood Ave\n\nMenlo Park\nCA\n94025\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Mark Anthony Medrano Favis"
],
[
"n",
{},
"text",
[
"Favis",
"Mark Anthony ",
"Medrano",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-650-859-6499"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-04-09T17:54:34-04:00"
},
{
"eventAction": "registration",
"eventDate": "1984-11-09T00:00:00-05:00"
}
],
"handle": "NET-128-57-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/128.57.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/128.57.0.1"
},
{
"href": "https://whois.arin.net/rest/net/NET-128-57-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/128.57.0.1"
}
],
"name": "DEMO-PR-2",
"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/128.57.0.1"
}
],
"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/128.57.0.1"
}
],
"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": "128.57.0.0",
"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).
Unknown.
No valid ROA was found for this prefix.
UNKNOWN
Validated Prefix
128.57.0.0/20
Authorized ASN
Not available.
Abuse Contacts
IP Geolocation
Country
United States
Time Zone
America/Chicago
Coordinates
37.751, -97.822
Continent
North America
European Union
No.
Phone prefix
+1
Currency
US Dollar (USD $)