Whois & RDAP Lookup
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RDAPIP Range131.143.239.0 - 131.143.239.255
HandleNET-131-143-239-0-2
NameJSMSR-NETWORK
TypeASSIGNMENT
HolderJSMSR Network
Registered2025-11-22 22:46 UTC
Updated2025-11-22 22:46 UTC
RegistrantJSMSR Network
Address1 Ma Kok Street, Tsuen Wan,, HongKong, , , Hong Kong
Admin ContactJSMSR
Email[email protected]
Address1942 Broadway Ste 314C, Boulder, CO, 80302, United States
Tech ContactJSMSR
Email[email protected]
Address1942 Broadway Ste 314C, Boulder, CO, 80302, United States
Abuse Contact[email protected]
Abuse Phone+1-852-423-9525;ext852
Statusactive
Registry RDAPhttps://rdap.arin.net
Raw WHOIS response
# # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # # start NetRange: 131.143.239.0 - 131.143.239.255 CIDR: 131.143.239.0/24 NetName: JSMSR NETWORK NetHandle: NET-131-143-239-0-1 Parent: NET131 (NET-131-0-0-0-0) NetType: Direct Allocation OriginAS: Organization: JSMSR Network (JNL-41) RegDate: 2025-10-06 Updated: 2025-10-07 Ref: https://rdap.arin.net/registry/ip/131.143.239.0 OrgName: JSMSR Network OrgId: JNL-41 Address: 1942 Broadway Ste 314C City: Boulder StateProv: CO PostalCode: 80302 Country: US RegDate: 2024-04-02 Updated: 2024-04-23 Ref: https://rdap.arin.net/registry/entity/JNL-41 OrgDNSHandle: JSMSR-ARIN OrgDNSName: JSMSR OrgDNSPhone: +1-852-423-9525 OrgDNSEmail: [email protected] OrgDNSRef: https://rdap.arin.net/registry/entity/JSMSR-ARIN OrgRoutingHandle: JSMSR-ARIN OrgRoutingName: JSMSR OrgRoutingPhone: +1-852-423-9525 OrgRoutingEmail: [email protected] OrgRoutingRef: https://rdap.arin.net/registry/entity/JSMSR-ARIN OrgAbuseHandle: JSMSR-ARIN OrgAbuseName: JSMSR OrgAbusePhone: +1-852-423-9525 OrgAbuseEmail: [email protected] OrgAbuseRef: https://rdap.arin.net/registry/entity/JSMSR-ARIN OrgTechHandle: JSMSR-ARIN OrgTechName: JSMSR OrgTechPhone: +1-852-423-9525 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/JSMSR-ARIN OrgNOCHandle: JSMSR-ARIN OrgNOCName: JSMSR OrgNOCPhone: +1-852-423-9525 OrgNOCEmail: [email protected] OrgNOCRef: https://rdap.arin.net/registry/entity/JSMSR-ARIN # end # start NetRange: 131.143.239.0 - 131.143.239.255 CIDR: 131.143.239.0/24 NetName: JSMSR-NETWORK NetHandle: NET-131-143-239-0-2 Parent: JSMSR NETWORK (NET-131-143-239-0-1) NetType: Reassigned OriginAS: Customer: JSMSR Network (C11429503) RegDate: 2025-11-22 Updated: 2025-11-22 Comment: Geofeed: https://geofeed.jsmsr.com/geofeeds.csv Ref: https://rdap.arin.net/registry/ip/131.143.239.0 CustName: JSMSR Network Address: 1 Ma Kok Street, Tsuen Wan, City: HongKong StateProv: PostalCode: Country: HK RegDate: 2025-11-22 Updated: 2025-11-22 Ref: https://rdap.arin.net/registry/entity/C11429503 OrgDNSHandle: JSMSR-ARIN OrgDNSName: JSMSR OrgDNSPhone: +1-852-423-9525 OrgDNSEmail: [email protected] OrgDNSRef: https://rdap.arin.net/registry/entity/JSMSR-ARIN OrgRoutingHandle: JSMSR-ARIN OrgRoutingName: JSMSR OrgRoutingPhone: +1-852-423-9525 OrgRoutingEmail: [email protected] OrgRoutingRef: https://rdap.arin.net/registry/entity/JSMSR-ARIN OrgAbuseHandle: JSMSR-ARIN OrgAbuseName: JSMSR OrgAbusePhone: +1-852-423-9525 OrgAbuseEmail: [email protected] OrgAbuseRef: https://rdap.arin.net/registry/entity/JSMSR-ARIN OrgTechHandle: JSMSR-ARIN OrgTechName: JSMSR OrgTechPhone: +1-852-423-9525 OrgTechEmail: [email protected] OrgTechRef: https://rdap.arin.net/registry/entity/JSMSR-ARIN OrgNOCHandle: JSMSR-ARIN OrgNOCName: JSMSR OrgNOCPhone: +1-852-423-9525 OrgNOCEmail: [email protected] OrgNOCRef: https://rdap.arin.net/registry/entity/JSMSR-ARIN # end # # ARIN WHOIS data and services are subject to the Terms of Use # available at: https://www.arin.net/resources/registry/whois/tou/ # # If you see inaccuracies in the results, please report at # https://www.arin.net/resources/registry/whois/inaccuracy_reporting/ # # Copyright 1997-2026, American Registry for Internet Numbers, Ltd. # % Query time: 500 msec % WHEN: Wed Jul 29 09:49:38 UTC 2026
Raw RDAP JSON (registry) https://rdap.arin.net
{
"arin_originas0_originautnums": [],
"cidr0_cidrs": [
{
"length": 24,
"v4prefix": "131.143.239.0"
}
],
"endAddress": "131.143.239.255",
"entities": [
{
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-05-03T13:32:09-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-04-02T09:03:50-04:00"
}
],
"handle": "JSMSR-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/JSMSR-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.143.239.0/24"
},
{
"href": "https://whois.arin.net/rest/poc/JSMSR-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.143.239.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"dns",
"routing",
"abuse",
"technical",
"noc",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"adr",
{
"label": "1942 Broadway Ste 314C\nBoulder\nCO\n80302\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
{},
"text",
"JSMSR"
],
[
"org",
{},
"text",
"JSMSR"
],
[
"kind",
{},
"text",
"group"
],
[
"email",
{},
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-852-423-9525;ext852"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-04-23T16:33:22-04:00"
},
{
"eventAction": "registration",
"eventDate": "2024-04-02T09:48:03-04:00"
}
],
"handle": "JNL-41",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/JNL-41",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.143.239.0/24"
},
{
"href": "https://whois.arin.net/rest/org/JNL-41",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.143.239.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"JSMSR Network"
],
[
"adr",
{
"label": "1942 Broadway Ste 314C\nBoulder\nCO\n80302\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-11-22T17:46:56-05:00"
},
{
"eventAction": "registration",
"eventDate": "2025-11-22T17:46:56-05:00"
}
],
"handle": "C11429503",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/C11429503",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.143.239.0/24"
},
{
"href": "https://whois.arin.net/rest/customer/C11429503",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.143.239.0/24"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
{},
"text",
"4.0"
],
[
"fn",
{},
"text",
"JSMSR Network"
],
[
"adr",
{
"label": "1 Ma Kok Street, Tsuen Wan,\nHongKong\n\n\nHong Kong"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
{},
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2025-11-22T17:46:57-05:00"
},
{
"eventAction": "registration",
"eventDate": "2025-11-22T17:46:57-05:00"
}
],
"handle": "NET-131-143-239-0-2",
"ipVersion": "v4",
"links": [
{
"href": "https://rdap.arin.net/registry/ip/131.143.239.0",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.143.239.0/24"
},
{
"href": "https://whois.arin.net/rest/net/NET-131-143-239-0-2",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/ip/131.143.239.0/24"
},
{
"href": "https://rdap.arin.net/registry/ip/131.143.239.0/24",
"rel": "up",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/ip/131.143.239.0/24"
}
],
"name": "JSMSR-NETWORK",
"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/131.143.239.0/24"
}
],
"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/131.143.239.0/24"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "ip network",
"parentHandle": "NET-131-143-239-0-1",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"cidr0",
"arin_originas0"
],
"remarks": [
{
"description": [
"Geofeed: https://geofeed.jsmsr.com/geofeeds.csv"
],
"title": "Registration Comments"
}
],
"startAddress": "131.143.239.0",
"status": [
"active"
],
"type": "ASSIGNMENT"
}Frequently asked questions
What is WHOIS?
WHOIS is a public directory that answers "who is responsible for this?" for domains, IP ranges and ASNs. It lists registration dates, the registrar, nameservers and contacts.
What is RDAP, and how does it differ?
RDAP is the modern replacement for WHOIS. It returns the same records in a structured, consistent format. We query RDAP first and fall back to classic WHOIS text when a registry has not adopted it yet.
What is the difference between a registrar and a registrant?
The registrar is the company you register and manage a domain through, such as xTom or GoDaddy. The registrant is the person or organization that actually holds the domain.
What are nameservers?
Nameservers answer DNS questions for a domain and decide which IP addresses the name resolves to. They also show which DNS provider the domain uses.
What is DNSSEC?
DNSSEC adds cryptographic signatures to DNS answers so they cannot be quietly altered in transit. "Signed" means the domain has it enabled, "unsigned" means it does not.
Why is the contact information redacted?
Privacy laws such as GDPR require registrars to hide most personal details in public records. The abuse contact is usually still shown, so a domain or network can be reported when something goes wrong.