DNS
THE CERTIFICATE BEHIND THE CONNECTION

TLS certificate checker.

Inspect SSL/TLS certificates for any public domain or subdomain.

Checks HTTPS on port 443, including subject alternative names, validity dates and the presented chain.

SSL certificate

TLSv1.3

mail.atlex.ru · 91.109.200.10:443

Verified

Certificate chain, hostname and dates verified using this server’s CA store.

Subject
CN=atlex.ru
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-09-29T17:54:05+00:00
Expires
2026-12-28T17:54:04+00:00
Days remaining
75
Serial (hex)
05160CC90C3110BFF3EC3E0B87FC77E47A22
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:*.atlex.ru, DNS:*.okeytelecom.ru, DNS:*.xn--80akpc6ac.xn--p1ai, DNS:atlex.ru, DNS:okey-telecom.ru, DNS:okeytelecom.ru, DNS:www.okey-telecom.ru, DNS:xn--80akpc6ac.xn--p1ai

SHA-256 fingerprint

22:AE:A0:32:66:F5:BF:83:96:3A:3B:1C:66:98:85:71:A8:DF:F7:FC:50:7B:B3:9C:66:8B:EE:20:CB:A6:FB:7E
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
1E:C1:2E:A8:B6:36:7C:00:56:05:BF:5B:D5:C7:A2:26:BD:1D:0D:0F
authorityKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityInfoAccess
CA Issuers - URI:http://yr2.i.lencr.org/
subjectAltName
DNS:*.atlex.ru, DNS:*.okeytelecom.ru, DNS:*.xn--80akpc6ac.xn--p1ai, DNS:atlex.ru, DNS:okey-telecom.ru, DNS:okeytelecom.ru, DNS:www.okey-telecom.ru, DNS:xn--80akpc6ac.xn--p1ai
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/35.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : C8:A3:C4:7F:C7:B3:AD:B9:35:6B:01:3F:6A:7A:12:6D: E3:3A:4E:43:A5:C6:46:F9:97:AD:39:75:99:1D:CF:9A Timestamp : Sep 29 18:52:35.410 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:E1:31:0C:57:AC:83:86:9C:C7:94:17: AD:59:E0:46:89:1B:92:DC:49:36:51:84:9D:9D:3F:0C: 1A:7A:07:57:B6:02:21:00:AF:F9:3C:77:F7:F8:28:A0: C9:05:55:1B:A7:41:DB:3A:E4:74:B7:AF:F0:37:86:53: 14:16:50:2D:50:BA:FA:A1 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 46:AF:86:3D:3B:3E:E5:9F:A5:77:DE:A8:24:5D:36:B0: D9:ED:22:A2:23:F4:61:77:41:22:94:52:EE:95:50:5F Timestamp : Sep 29 18:52:35.535 2026 GMT Extensions: 00:00:05:00:37:EE:72:17 Signature : ecdsa-with-SHA256 30:44:02:20:1F:B2:14:32:FB:35:43:81:52:15:16:B3: 57:14:AA:E4:89:13:23:84:D4:8A:61:C4:D6:8C:1E:AB: C9:E7:4A:C3:02:20:6A:E3:94:7D:22:27:2C:5E:FD:7E: 34:83:7D:4D:E3:A9:C9:CE:5B:52:D9:AD:62:A0:D8:90: D8:16:07:6C:EB:19
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-14T14:04:01+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR2
Issuer
C=US O=ISRG CN=Root YR
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
689
Serial (hex)
4EBD24947E24D394802D84A52FD5B319
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

23:8B:85:A0:09:9C:65:B9:70:47:7D:57:24:F1:A1:D4:75:CE:50:58:CF:FE:4E:FA:87:33:89:9B:DB:86:3C:47
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
40:15:2D:26:79:ED:32:20:9E:DF:9A:72:1D:D6:32:1F:81:0C:81:0C
authorityKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityInfoAccess
CA Issuers - URI:http://yr.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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==
-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YR
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X1
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2150
Serial (hex)
F24B6D17F9D9AD7CB1C9FEA78782699F
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

07:26:39:D0:B1:40:D5:BF:FA:E1:6A:D9:C3:F6:CC:60:86:04:06:21:F5:1E:E6:1A:6D:46:A8:91:5C:07:CF:76
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
DE:E7:5B:60:D0:22:6D:40:28:7D:3F:0D:01:FE:A4:B5:52:B4:51:94
authorityKeyIdentifier
79:B4:59:E6:7B:B6:E5:E4:01:73:80:08:88:C8:1A:58:F6:E9:9B:6E
authorityInfoAccess
CA Issuers - URI:http://x1.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x1.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

One endpoint on port 443. Server-presented chain; no revocation, OCSP, CT or full TLS security scan.

View certificate JSON

Registration / WHOIS →DNS records →