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.oxar.net · 185.253.58.26:443

Verified
The certificate expires within 30 days.

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

Subject
CN=mail.oxar.net
Issuer
C=US O=Let's Encrypt CN=YR1
Valid from
2026-08-02T02:04:32+00:00
Expires
2026-10-31T02:04:31+00:00
Days remaining
29
Serial (hex)
05045DC30B4033241DAA98718E7759329874
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:autoconfig.bigbandalmelo.nl, DNS:autoconfig.c-ya.nl, DNS:autoconfig.hallo-retail.nl, DNS:autoconfig.happyquote.nl, DNS:autoconfig.janinetewinkel.nl, DNS:autoconfig.jmetertraining.nl, DNS:autoconfig.mrloes.nl, DNS:autoconfig.oxar.nl, DNS:autoconfig.smaragd-it.nl, DNS:autodiscover.bigbandalmelo.nl, DNS:autodiscover.bvanwijngaarden.nl, DNS:autodiscover.c-ya.nl, DNS:autodiscover.hallo-retail.nl, DNS:autodiscover.happyquote.nl, DNS:autodiscover.janinetewinkel.nl, DNS:autodiscover.jmetertraining.nl, DNS:autodiscover.mrloes.nl, DNS:autodiscover.oxar.nl, DNS:autodiscover.smaragd-it.nl, DNS:autodiscover.vb1.nl, DNS:mail.happyquote.nl, DNS:mail.mrloes.nl, DNS:mail.naml.nl, DNS:mail.oxar.net

SHA-256 fingerprint

D2:85:6C:F6:B6:51:32:A9:71:5C:95:5B:81:2C:D8:C8:7C:9A:2A:C5:74:31:F3:2E:AB:8B:5A:CF:60:FA:FB:F5
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
E1:CE:27:0E:EA:F8:48:A7:25:77:8E:F7:C9:70:A9:3F:BF:CB:84:60
authorityKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
authorityInfoAccess
CA Issuers - URI:http://yr1.i.lencr.org/
subjectAltName
DNS:autoconfig.bigbandalmelo.nl, DNS:autoconfig.c-ya.nl, DNS:autoconfig.hallo-retail.nl, DNS:autoconfig.happyquote.nl, DNS:autoconfig.janinetewinkel.nl, DNS:autoconfig.jmetertraining.nl, DNS:autoconfig.mrloes.nl, DNS:autoconfig.oxar.nl, DNS:autoconfig.smaragd-it.nl, DNS:autodiscover.bigbandalmelo.nl, DNS:autodiscover.bvanwijngaarden.nl, DNS:autodiscover.c-ya.nl, DNS:autodiscover.hallo-retail.nl, DNS:autodiscover.happyquote.nl, DNS:autodiscover.janinetewinkel.nl, DNS:autodiscover.jmetertraining.nl, DNS:autodiscover.mrloes.nl, DNS:autodiscover.oxar.nl, DNS:autodiscover.smaragd-it.nl, DNS:autodiscover.vb1.nl, DNS:mail.happyquote.nl, DNS:mail.mrloes.nl, DNS:mail.naml.nl, DNS:mail.oxar.net
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr1.c.lencr.org/117.crl
ct_precert_scts
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 : Aug 2 03:03:03.156 2026 GMT Extensions: 00:00:05:00:0F:76:BB:19 Signature : ecdsa-with-SHA256 30:45:02:20:4F:80:60:F7:E5:5A:05:08:3D:45:FA:9C: EF:B8:0C:5F:F4:C9:9C:C2:F5:0F:57:8B:94:08:E4:84: EB:36:9D:77:02:21:00:CF:FC:23:76:AF:32:80:D0:67: A9:F8:E6:39:DD:33:47:55:92:53:AA:F7:F9:8B:2D:F2: 09:F6:80:F0:04:76:C9 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : AF:67:88:3B:57:B0:4E:DD:8F:A6:D9:7E:F6:2E:A8:EB: 81:0A:C7:71:60:F0:24:5E:55:D6:0C:2F:E7:85:87:3A Timestamp : Aug 2 03:03:03.304 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:20:29:C0:27:6C:52:7E:D3:1E:5F:E9:46:CB: 99:5B:15:8E:B0:22:49:BC:57:79:8B:D1:2D:3B:84:C0: A3:B1:10:30:02:20:06:FE:81:DE:9E:77:EE:48:EE:56: 66:9E:31:61:E1:7E:65:88:EA:C3:23:88:21:21:02:EA: 7F:65:2A:F9:14:E4
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_256_GCM_SHA384 · Checked 2026-10-01T08:14:39+00:00

Server-presented chain · 2 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YR1
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
702
Serial (hex)
A20253F15F2691C05DC1CE13B9BCCA4E
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

13:94:96:34:D9:9C:D6:FD:6A:A8:0B:C0:34:FE:FA:CC:EB:19:69:FE:EF:98:65:86:71:3E:CD:BB:05:75:8D:3F
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
1F:2F:35:BE:46:14:82:CD:40:B1:AE:79:2C:55:78:FA:F7:D4:68:FB
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
2163
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

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