Results forwww.tsukuba.co.jp

Registrar

Creation Date

DNSSEC

How it works

Every certificate issued for a domain by a trusted CA is publicly announced and stored.
The entries on this page were collected by crt.sh.

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name
2024-09-03T02:10:03.964	2024-09-03T01:11:33	2024-12-02T01:11:32	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R11
2024-09-03T02:10:03.612	2024-09-03T01:11:33	2024-12-02T01:11:32	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R11
2024-06-07T01:27:30.713	2024-06-07T00:27:30	2024-09-05T00:27:29	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R10
2024-06-07T01:27:30.536	2024-06-07T00:27:30	2024-09-05T00:27:29	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R10
2024-03-18T08:21:41.832	2024-03-18T07:21:41	2024-06-16T07:21:40	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2024-03-18T08:21:41.522	2024-03-18T07:21:41	2024-06-16T07:21:40	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2023-12-19T01:01:12.432	2023-12-19T00:01:11	2024-03-18T00:01:10	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2023-12-19T01:01:12.068	2023-12-19T00:01:11	2024-03-18T00:01:10	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2023-09-19T02:23:55.846	2023-09-19T01:23:55	2023-12-18T01:23:54	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2023-09-19T02:23:55.63	2023-09-19T01:23:55	2023-12-18T01:23:54	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2023-06-19T00:20:26.196	2023-06-18T23:20:25	2023-09-16T23:20:24	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2023-06-19T00:20:25.923	2023-06-18T23:20:25	2023-09-16T23:20:24	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2023-03-17T00:47:17.76	2023-03-16T23:47:17	2023-06-14T23:47:16	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2023-03-17T00:47:17.227	2023-03-16T23:47:17	2023-06-14T23:47:16	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2022-12-20T01:01:42.235	2022-12-20T00:01:41	2023-03-20T00:01:40	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2022-12-20T01:01:41.873	2022-12-20T00:01:41	2023-03-20T00:01:40	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2022-10-03T02:59:19.459	2022-10-03T01:59:18	2023-01-01T01:59:17	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2022-10-03T02:59:18.759	2022-10-03T01:59:18	2023-01-01T01:59:17	tsukuba.co.jp	*.tsukuba.co.jp	C=US, O=Let's Encrypt, CN=R3
2022-03-30T07:56:52.997	2022-03-30T07:46:52	2023-03-31T14:59:59	*.tsukuba.co.jp	*.tsukuba.co.jp	C=JP, O="Japan Registry Services Co., Ltd.", CN=JPRS Domain Validation Authority - G4
2021-03-12T06:12:05.435	2021-03-12T06:02:04	2022-03-31T14:59:59	*.tsukuba.co.jp	*.tsukuba.co.jp	C=JP, O="Japan Registry Services Co., Ltd.", CN=JPRS Domain Validation Authority - G4
2020-08-19T05:26:09.262	2020-08-19T05:16:08	2022-03-31T14:59:59	*.tsukuba.co.jp	*.tsukuba.co.jp	C=JP, O="Japan Registry Services Co., Ltd.", CN=JPRS Domain Validation Authority - G4
2020-04-01T23:19:53.269	2020-03-30T08:31:08	2022-03-31T14:59:59	*.tsukuba.co.jp	*.tsukuba.co.jp	C=JP, O="Japan Registry Services Co., Ltd.", CN=JPRS Domain Validation Authority - G3
2020-03-30T08:41:09.52	2020-03-30T08:31:08	2022-03-31T14:59:59	*.tsukuba.co.jp	*.tsukuba.co.jp	C=JP, O="Japan Registry Services Co., Ltd.", CN=JPRS Domain Validation Authority - G3
2018-04-02T00:01:41.029	2018-03-29T09:19:10	2020-03-31T14:59:59	*.tsukuba.co.jp	*.tsukuba.co.jp	C=JP, O="Japan Registry Services Co., Ltd.", CN=JPRS Domain Validation Authority - G1
2017-04-04T22:02:33.377	2017-03-31T00:00:00	2018-03-31T23:59:59	*.tsukuba.co.jp	*.tsukuba.co.jp	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Domain Validation Secure Server CA
2016-12-08T09:47:41.913	2016-12-05T00:00:00	2017-12-20T23:59:59	www.tsukuba.co.jp	www.tsukuba.co.jp	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Domain Validation Secure Server CA
2015-12-12T02:51:06.981	2015-12-08T00:00:00	2016-12-12T23:59:59	www.tsukuba.co.jp	www.tsukuba.co.jp	C=GB, ST=Greater Manchester, L=Salford, O=COMODO CA Limited, CN=COMODO RSA Domain Validation Secure Server CA
2015-01-16T15:57:33.954	2014-10-15T05:05:29	2015-12-13T07:26:39	www.tsukuba.co.jp	www.tsukuba.co.jp	C=BE, O=GlobalSign nv-sa, CN=GlobalSign Domain Validation CA - SHA256 - G2
2013-09-14T12:11:44.883	2013-09-12T06:59:52	2014-11-12T07:26:39	www.tsukuba.co.jp	www.tsukuba.co.jp	C=BE, O=GlobalSign nv-sa, CN=GlobalSign Domain Validation CA - G2
2013-03-26T09:14:07.173	2012-10-11T07:26:39	2013-10-12T07:26:39	www.tsukuba.co.jp	www.tsukuba.co.jp	C=BE, O=GlobalSign nv-sa, CN=GlobalSign Domain Validation CA - G2

Logged At	Not Before	Not After	Common Name	Matching Identities	Issuer Name