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

TLSv1.2

mail.lowping.nl · 103.147.153.122:443

Verified

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

Subject
CN=mail.as215296.net
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-08-23T23:05:44+00:00
Expires
2026-11-21T23:05:43+00:00
Days remaining
38
Serial (hex)
063A33E4AE5B2B5FCA1C736E844A7B28D95C
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:autodiscover.lowping.nl, DNS:autodiscover.raserve.nl, DNS:mail.as215296.net, DNS:mail.lowping.nl, DNS:mail.raserve.nl, DNS:smtp.lowping.nl, DNS:smtp.raserve.nl

SHA-256 fingerprint

54:74:9F:A5:D0:35:11:40:CB:43:2A:71:8D:C2:D9:31:57:D0:AA:7A:D1:FC:13:6A:2B:D0:EF:30:BE:15:61:A9
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
39:4C:3C:03:26:49:CF:4F:D3:9B:9A:ED:07:36:30:5E:38:00:A4:1C
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:autodiscover.lowping.nl, DNS:autodiscover.raserve.nl, DNS:mail.as215296.net, DNS:mail.lowping.nl, DNS:mail.raserve.nl, DNS:smtp.lowping.nl, DNS:smtp.raserve.nl
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/93.crl
ct_precert_scts
Signed Certificate Timestamp: Version : v1 (0x0) Log ID : CB:38:F7:15:89:7C:84:A1:44:5F:5B:C1:DD:FB:C9:6E: F2:9A:59:CD:47:0A:69:05:85:B0:CB:14:C3:14:58:E7 Timestamp : Aug 24 00:04:14.604 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:80:45:80:74:77:80:F8:8D:94:6B:20: 0B:E6:1E:B0:2E:FB:C0:96:EC:E8:C2:1B:78:1F:6D:39: 4A:56:25:B8:1F:02:21:00:A6:F5:7C:76:54:E8:44:8A: 36:19:81:35:FA:9B:FB:D5:AD:F4:FD:07:B8:49:FD:A9: 04:33:09:19:BB:B5:DC:02 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 1A:8B:9D:6B:0F:FE:BF:81:B4:79:39:C6:D2:31:0A:86: D6:D1:02:D4:F0:46:E2:18:2C:9D:E3:5F:5E:26:25:EF Timestamp : Aug 24 00:04:15.363 2026 GMT Extensions: 00:00:05:00:37:FD:08:ED Signature : ecdsa-with-SHA256 30:46:02:21:00:C0:66:D8:13:30:97:A8:92:60:55:44: CE:FB:4E:68:2B:F8:8A:7D:7F:62:61:1D:49:1D:2B:C7: CC:BD:BC:EC:B0:02:21:00:B3:FF:A0:8D:58:B0:DA:E9: 4B:59:0C:26:72:64:A4:D1:BB:6E:90:38:BF:DE:8D:1F: 8D:F8:6D:19:99:55:AE:F5
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: ECDHE-RSA-AES256-GCM-SHA384 · Checked 2026-10-14T03:57:03+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

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