206.51.0.0
ISP
Data retrieved at
Network
ASN
Not available.
IP Range
Company
Not available.
Registrant
Critical Hub Networks
CRITICAL1
Using networksdb.io for network lookups.
Hostname
Not available.
AS Domain
Not available.
Type
ISP
Handle
NET-206-51-0-0-1
Registered
2011-01-14
Last Changed
2012-03-02
View raw RDAP
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"v4prefix": "206.51.0.0",
"length": 24
}
],
"endAddress": "206.51.0.255",
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-04T06:02:19-05:00"
},
{
"eventAction": "registration",
"eventDate": "2010-10-22T17:01:48-04:00"
}
],
"handle": "NETWO3996-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETWO3996-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
},
{
"href": "https://whois.arin.net/rest/poc/NETWO3996-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"http://www.criticalhub.com"
],
"title": "Registration Comments"
}
],
"roles": [
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "652 Calle Hipodromo\nSan Juan\nPR\n00909\nPuerto Rico"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Network Administrator"
],
[
"org",
{},
"text",
"Critical Hub Networks"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-787-728-9000"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-787-728-9789"
],
[
"tel",
{
"type": [
"work",
"fax"
]
},
"text",
"+1-787-728-9777"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-02-20T13:38:54-05:00"
},
{
"eventAction": "registration",
"eventDate": "2020-02-19T17:28:21-05:00"
}
],
"handle": "ABUSE7837-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ABUSE7837-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
},
{
"href": "https://whois.arin.net/rest/poc/ABUSE7837-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"Please send any abuse issues to this email."
],
"title": "Registration Comments"
},
{
"description": [
"ARIN has attempted to validate the data for this POC, but has received no response from the POC since 2025-02-19"
],
"title": "Unvalidated POC"
}
],
"roles": [
"abuse"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 11278\nSan Juan\nPR\n00910\nPuerto Rico"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Abuse Email"
],
[
"org",
{},
"text",
"Critical Hub Network"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-787-728-9000"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-07-15T13:00:47-04:00"
},
{
"eventAction": "registration",
"eventDate": "2002-01-24T15:32:29-05:00"
}
],
"handle": "HL244-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/HL244-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
},
{
"href": "https://whois.arin.net/rest/poc/HL244-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "PO Box 11278\nSan Juan\n\n00910-2378\nPuerto Rico"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Hector Lopez"
],
[
"n",
{},
"text",
[
"Lopez",
"Hector",
"",
"",
""
]
],
[
"kind",
{},
"text",
"individual"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-787-728-9000;ext6389"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-11-25T11:09:46-05:00"
},
{
"eventAction": "registration",
"eventDate": "2002-01-24T00:00:00-05:00"
}
],
"handle": "CHN-9",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/CHN-9",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
},
{
"href": "https://whois.arin.net/rest/org/CHN-9",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"OpticoFiber"
],
"title": "Registration Comments"
}
],
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"Critical Hub Networks"
],
[
"adr",
{
"label": "652 Calle Hipodromo\nSan Juan\nPR\n00909\nPuerto Rico"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-04T06:02:19-05:00"
},
{
"eventAction": "registration",
"eventDate": "2010-10-22T17:01:48-04:00"
}
],
"handle": "NETWO3996-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/NETWO3996-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
},
{
"href": "https://whois.arin.net/rest/poc/NETWO3996-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"remarks": [
{
"description": [
"http://www.criticalhub.com"
],
"title": "Registration Comments"
}
],
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "652 Calle Hipodromo\nSan Juan\nPR\n00909\nPuerto Rico"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"Network Administrator"
],
[
"org",
{},
"text",
"Critical Hub Networks"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-787-728-9000"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-787-728-9789"
],
[
"tel",
{
"type": [
"work",
"fax"
]
},
"text",
"+1-787-728-9777"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2012-03-02T08:03:18-05:00"
},
{
"eventAction": "registration",
"eventDate": "2011-01-14T18:35:57-05:00"
}
],
"handle": "NET-206-51-0-0-1",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/206.51.0.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
},
{
"href": "https://whois.arin.net/rest/net/NET-206-51-0-0-1",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/206.51.0.0"
}
],
"name": "CRITICAL1",
"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/206.51.0.0"
}
],
"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/206.51.0.0"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-206-0-0-0-0",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"startAddress": "206.51.0.0",
"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
Not available
Authorized ASN
Not available.
IP Geolocation
Country
Puerto Rico
Time Zone
America/Puerto_Rico
Coordinates
18.25, -66.5
Continent
North America
European Union
No.
Phone prefix
+1
Currency
Not available.