Free network tools
AS WHOIS
Look up an Autonomous System — holder, registry, contacts, announced IPv4/IPv6 prefixes, upstreams and downstreams.
Network Report (All-in-one) BGP Looking Glass BGP Security Check RPKI Validator BGP Hijack & Leak Monitor ASN Intelligence Internet Outages & Anomalies Country Internet Report Domain Insights IP WHOIS AS WHOIS
AS399917
SEAMLESS-FIBER-INNOVATIONS - Seamless Fiber Innovations L.L.C. Announcing routesAS nameSEAMLESS-FIBER-INNOVATIONS
OrganisationSeamless Fiber Innovations L.L.C.
Registry (RIR)ARIN
HandleAS399917
RangeAS399917
Registered04 Aug 2021
Last changed04 Aug 2021
11IPv4 prefixes
0IPv6 prefixes
3Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS30036 | MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp | 282 |
| AS62943 | AS62943-BLUEBIRD-NETWORK - Missouri Network Alliance, LLC | 270 |
| AS174 | COGENT-174 - Cogent Communications, LLC | 254 |
Downstreams
None seen.
IPv4 prefixes (11)
RPKI-validate all prefixes of AS399917
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Seamless Fiber Innovations L.L.C. | SFIL-6 | P.O. Box 504, Marshall, IL, 62441, United States | |
| abuse, administrative, technical | Josh Esker | ESKER-ARIN | [email protected], [email protected], +1-217-686-4114 | P.O. Box 811, Effingham, IL, 62401, United States |
Raw registry response
{
"endAutnum": 399917,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-10-06T09:48:29-04:00"
},
{
"eventAction": "registration",
"eventDate": "2022-01-11T10:45:12-05:00"
}
],
"handle": "ESKER-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/ESKER-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/399917"
},
{
"href": "https://whois.arin.net/rest/poc/ESKER-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/399917"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"administrative",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "P.O. Box 811\nEffingham\nIL\n62401\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Josh Esker"
],
[
"n",
[],
"text",
[
"Esker",
"Josh",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-217-686-4114"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2024-11-25T11:09:46-05:00"
},
{
"eventAction": "registration",
"eventDate": "2020-01-17T12:36:49-05:00"
}
],
"handle": "SFIL-6",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/SFIL-6",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/399917"
},
{
"href": "https://whois.arin.net/rest/org/SFIL-6",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/399917"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Seamless Fiber Innovations L.L.C."
],
[
"adr",
{
"label": "P.O. Box 504\nMarshall\nIL\n62441\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2021-08-04T10:14:46-04:00"
},
{
"eventAction": "registration",
"eventDate": "2021-08-04T10:14:46-04:00"
}
],
"handle": "AS399917",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/399917",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/399917"
},
{
"href": "https://whois.arin.net/rest/asn/AS399917",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/399917"
}
],
"name": "SEAMLESS-FIBER-INNOVATIONS",
"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/autnum/399917"
}
],
"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/autnum/399917"
}
],
"title": "Whois Inaccuracy Reporting"
},
{
"description": [
"Copyright 1997-2026, American Registry for Internet Numbers, Ltd."
],
"title": "Copyright Notice"
}
],
"objectClassName": "autnum",
"port43": "whois.arin.net",
"rdapConformance": [
"nro_rdap_profile_0",
"rdap_level_0",
"nro_rdap_profile_asn_flat_0"
],
"remarks": [
{
"description": [
"https://www.seamlessfiberinnovations.com/\r",
"Standard NOC hours are 8:00 AM to 4:30 PM CST"
],
"title": "Registration Comments"
}
],
"startAutnum": 399917,
"status": [
"active"
]
}Results come from public internet registries and live global routing data. Results are cached for up to an hour. Lookups are logged with your IP address to prevent abuse — see our Privacy Policy.