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
AS398097
WINTRUST-FINANCIAL-CORPORATION-EG-IL - Wintrust Financial Corporation Announcing routescachedAS nameWINTRUST-FINANCIAL-CORPORATION-EG-IL
OrganisationWintrust Financial Corporation
Registry (RIR)ARIN
HandleAS398097
RangeAS398097
Registered30 Oct 2019
Last changed30 Oct 2019
Abuse contact[email protected]
2IPv4 prefixes
0IPv6 prefixes
1Upstreams
0Downstreams
Upstreams
| AS | Network name | Visibility |
|---|---|---|
| AS23352 | SERVERCENTRAL - DEFT.COM | 403 |
Downstreams
None seen.
IPv4 prefixes (2)
RPKI-validate all prefixes of AS398097
Contacts
| Role | Name | Handle | Email / phone | Address |
|---|---|---|---|---|
| registrant | Wintrust Financial Corporation | WFC-90 | 9700 W. Higgins Road, Rosemont, IL, 60018, United States | |
| technical | Jermaine Mason | MASON570-ARIN | [email protected], +1-847-268-1329 | 9801 W Higgins Rd, Rosemont, IL, 60018, United States |
| technical, administrative | Wavyne Belance | BELAN26-ARIN | [email protected], +1-630-594-6235 | 9801 W. Higgins Road, Rosemont, IL, 60018, United States |
| abuse, technical | WTFC5-ARIN | WTFCA-ARIN | [email protected], +1-630-594-6235 | 9801 W. Higgins Road, Rosemont, IL, 60018, United States |
Raw registry response
{
"endAutnum": 398097,
"entities": [
{
"entities": [
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-13T17:20:21-05:00"
},
{
"eventAction": "registration",
"eventDate": "2026-01-13T17:20:21-05:00"
}
],
"handle": "MASON570-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/MASON570-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/398097"
},
{
"href": "https://whois.arin.net/rest/poc/MASON570-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/398097"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "9801 W Higgins Rd\nRosemont\nIL\n60018\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Jermaine Mason"
],
[
"n",
[],
"text",
[
"Mason",
"Jermaine",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-847-268-1329"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-10-15T16:25:28-04:00"
},
{
"eventAction": "registration",
"eventDate": "2025-10-15T16:32:08-04:00"
}
],
"handle": "BELAN26-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/BELAN26-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/398097"
},
{
"href": "https://whois.arin.net/rest/poc/BELAN26-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/398097"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"technical",
"administrative"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "9801 W. Higgins Road\nRosemont\nIL\n60018\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"Wavyne Belance"
],
[
"n",
[],
"text",
[
"Belance",
"Wavyne",
"",
"",
""
]
],
[
"kind",
[],
"text",
"individual"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-630-594-6235"
]
]
]
},
{
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-22T10:56:46-05:00"
},
{
"eventAction": "registration",
"eventDate": "2026-01-22T10:56:46-05:00"
}
],
"handle": "WTFCA-ARIN",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/WTFCA-ARIN",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/398097"
},
{
"href": "https://whois.arin.net/rest/poc/WTFCA-ARIN",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/398097"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"abuse",
"technical"
],
"status": [
"validated"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"adr",
{
"label": "9801 W. Higgins Road\nRosemont\nIL\n60018\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"fn",
[],
"text",
"WTFC5-ARIN"
],
[
"org",
[],
"text",
"Wintrust Financial Corporation"
],
[
"kind",
[],
"text",
"group"
],
[
"email",
[],
"text",
"[email protected]"
],
[
"tel",
{
"type": [
"work",
"voice"
]
},
"text",
"+1-630-594-6235"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2026-01-22T10:58:41-05:00"
},
{
"eventAction": "registration",
"eventDate": "2019-04-17T08:28:40-04:00"
}
],
"handle": "WFC-90",
"links": [
{
"href": "https://rdap.arin.net/registry/entity/WFC-90",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/398097"
},
{
"href": "https://whois.arin.net/rest/org/WFC-90",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/398097"
}
],
"objectClassName": "entity",
"port43": "whois.arin.net",
"roles": [
"registrant"
],
"vcardArray": [
"vcard",
[
[
"version",
[],
"text",
"4.0"
],
[
"fn",
[],
"text",
"Wintrust Financial Corporation"
],
[
"adr",
{
"label": "9700 W. Higgins Road\nRosemont\nIL\n60018\nUnited States"
},
"text",
[
"",
"",
"",
"",
"",
"",
""
]
],
[
"kind",
[],
"text",
"org"
]
]
]
}
],
"events": [
{
"eventAction": "last changed",
"eventDate": "2019-10-29T14:53:46-04:00"
},
{
"eventAction": "registration",
"eventDate": "2019-10-29T14:53:46-04:00"
}
],
"handle": "AS398097",
"links": [
{
"href": "https://rdap.arin.net/registry/autnum/398097",
"rel": "self",
"type": "application/rdap+json",
"value": "https://rdap.arin.net/registry/autnum/398097"
},
{
"href": "https://whois.arin.net/rest/asn/AS398097",
"rel": "alternate",
"type": "application/xml",
"value": "https://rdap.arin.net/registry/autnum/398097"
}
],
"name": "WINTRUST-FINANCIAL-CORPORATION-EG-IL",
"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/398097"
}
],
"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/398097"
}
],
"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": [
"www.wintrust.com\r",
"Standard NOC hours \r",
"6:00 AM to 7:00 PM CST"
],
"title": "Registration Comments"
}
],
"startAutnum": 398097,
"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.