66.99.10.8
IPv4 address
66.99.10.8
An address in Springfield, Illinois, United States, used by Illinois Century Network, announced by Concordia University Chicago (AS19941). It's a web server on ports 80 and 443.
Summary
Geolocation
Where the address is, and what that place uses.
- City
- Springfield
- Region
- Illinois
- Postal code
- 62701
- Country
- United States
- Continent
- North America
- Coordinates
- 39.8017, -89.6437
- Timezone
- America/Chicago
Ownership
Who holds the address: the AS announcing it, the registry record, the abuse contact and its name in DNS.
- Company
- Illinois Century Network
- Domain
- illinois.gov
- Type
- Government
- Registered in
- United States
- AS number
- AS19941
- Name
- Concordia University Chicago
- Prefix
- 66.99.8.0/22
- RPKI
- Valid
- Type
- Education
- Domain
- cuchicago.edu
- Registered in
- United States
- Name
- NETBLK-ICN-66-99-8-0-22-0029995
- Network name
- NETBLK-ICN-66-99-8-0-22-0029995
- Registry
- RWhois
- Domain
- cuchicago.edu
- Name
- ICN Abuse
- Phone
- +1-217-524-3648
- Address
- 120 W Jefferson, Suite B, Springfield, IL, 62702
- Network
- 66.99.0.0-66.99.255.255
Anonymity
Whether the address hides someone else: a VPN, Tor, a relay, a proxy pool, or a hosting range.
Network
What kind of network it is on: a mobile carrier, a satellite operator, an anycast service, a CDN edge.
Services
What our own internet-wide measurement found listening on it.
- 80 status
- 301
- 80 redirect
- https://66.99.10.8/
- 80 seen
- 2026-07-28 to 2026-10-21
- 443 status
- 200
- 443 server
- Microsoft-IIS/10.0
- 443 title
- Concordia University Chicago
- 443 TLS
- TLSv1.3
- 443 certificate
- gmail.cuchicago.edu
- 443 issuer
- C=US, O=Let's Encrypt, CN=YR1
- 443 browser-trusted
- Yes
- 443 seen
- 2026-07-27 to 2026-10-21
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