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

peer42.com · 91.199.218.15:443

Verified

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

Subject
CN=peer42.net
Issuer
C=US O=Let's Encrypt CN=YR2
Valid from
2026-09-05T19:12:51+00:00
Expires
2026-12-04T19:12:50+00:00
Days remaining
72
Serial (hex)
06827297551F25D2F182FFA04BF909BCA438
Signature
RSA-SHA256
Public key
RSA 4096

Subject alternative names (SAN)

DNS:peer42.ch, DNS:peer42.com, DNS:peer42.net, DNS:peer42.org, DNS:www.peer42.ch, DNS:www.peer42.com, DNS:www.peer42.net, DNS:www.peer42.org

SHA-256 fingerprint

5A:9A:94:01:B7:E1:87:0A:D8:58:41:D7:57:9A:D7:4D:C1:CB:53:66:3C:3F:30:FA:98:95:9B:54:F7:E4:3F:7E
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
88:F7:7F:0C:6C:9A:76:33:F8:42:4D:43:E1:4C:26:03:5B:CD:2E:61
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:peer42.ch, DNS:peer42.com, DNS:peer42.net, DNS:peer42.org, DNS:www.peer42.ch, DNS:www.peer42.com, DNS:www.peer42.net, DNS:www.peer42.org
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://yr2.c.lencr.org/57.crl
ct_precert_scts
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 : Sep 5 20:11:22.529 2026 GMT Extensions: 00:00:05:00:3C:DD:BA:BF Signature : ecdsa-with-SHA256 30:45:02:21:00:91:12:5F:11:19:0B:FA:D1:10:E0:0F: 70:53:58:08:97:D4:2F:72:CE:3D:78:EB:BE:33:4B:BF: B3:9C:EB:AF:7A:02:20:0A:E0:56:3D:5E:45:32:05:52: E0:3C:44:B5:0B:ED:F6:A3:16:09:AF:F2:4F:3A:FA:51: BC:0A:19:2A:A9:9D:29 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 : Sep 5 20:11:22.340 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:44:02:21:00:D3:C0:3E:D7:55:24:A2:15:3B:85:C9: 08:68:AD:E4:FF:FD:A4:3C:51:C4:C6:B7:A2:53:67:74: 7F:D3:1F:6C:72:02:1F:18:30:7E:FB:70:2C:EA:80:00: D3:D7:D3:4B:5B:1E:80:1F:D7:79:C6:F1:B4:12:96:A6: 24:22:9A:F0:5A:50
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-23T15:38:38+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
710
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
2171
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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