ASN History
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AS Organization
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First Seen
Last Seen
66.99.0.0/18
ISPIllinois Century Network
US
2025-11-02 08:34
2026-05-15 09:18
66.99.0.0/17
ISPIllinois Century Network
US
2007-08-07 07:33
2026-05-15 09:18
66.99.0.0/16
ISPIllinois Century Network
US
2006-10-22 11:21
2026-05-15 09:18
66.99.5.0/24
IDCCHICAGO PUBLIC LIBRARY
US
2011-11-30 09:48
2026-05-15 09:18
66.99.5.0/24
IDCCHICAGO PUBLIC LIBRARY
US
2011-11-30 09:48
2026-05-15 07:42
66.99.0.0/18
ISPIllinois Century Network
US
2025-11-02 08:34
2026-05-15 07:42
66.99.0.0/17
ISPIllinois Century Network
US
2007-08-07 07:33
2026-05-15 07:42
66.99.0.0/16
ISPIllinois Century Network
US
2006-10-22 11:21
2026-05-15 07:42
66.99.0.0/18
ISPIllinois Century Network
US
2025-11-02 08:34
2026-05-15 03:35
66.99.0.0/17
ISPIllinois Century Network
US
2007-08-07 07:33
2026-05-15 03:35
66.99.0.0/16
ISPIllinois Century Network
US
2006-10-22 11:21
2026-05-15 03:35
66.99.0.0/18
ISPIllinois Century Network
US
2025-11-02 08:34
2026-05-15 02:00
66.99.0.0/17
ISPIllinois Century Network
US
2007-08-07 07:33
2026-05-15 02:00
66.99.0.0/16
ISPIllinois Century Network
US
2006-10-22 11:21
2026-05-15 02:00
66.99.5.0/24
IDCCHICAGO PUBLIC LIBRARY
US
2011-11-30 09:48
2026-05-15 02:00
66.99.5.0/24
IDCCHICAGO PUBLIC LIBRARY
US
2011-11-30 09:48
2026-05-14 23:04
66.99.0.0/18
ISPIllinois Century Network
US
2025-11-02 08:34
2026-05-14 23:04
66.99.0.0/17
ISPIllinois Century Network
US
2007-08-07 07:33
2026-05-14 23:04
66.99.0.0/16
ISPIllinois Century Network
US
2006-10-22 11:21
2026-05-14 23:04
