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

relaix.de · 93.159.248.44:443

Verified

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

Subject
CN=redirect.relaix.net
Issuer
C=US O=Let's Encrypt CN=YE1
Valid from
2026-10-02T00:05:46+00:00
Expires
2026-12-31T00:05:45+00:00
Days remaining
84
Serial (hex)
06515667C248EE3DD8A531D366D25F508A53
Signature
ecdsa-with-SHA384
Public key
EC 256 prime256v1

Subject alternative names (SAN)

DNS:dsl-fuer-aachen.de, DNS:dslfueraachen.de, DNS:gigabit-pascalstrasse.de, DNS:glasfaser-pascalstrasse.de, DNS:redirect.relaix.net, DNS:relaex.net, DNS:relaix-glasfasernetz.de, DNS:relaix-networks.de, DNS:relaix.biz, DNS:relaix.de, DNS:relaix.eu, DNS:relaix.info, DNS:relaix.net, DNS:relaix.nrw, DNS:relax-networks.de, DNS:sicher.relaix.net, DNS:www.dsl-fuer-aachen.de, DNS:www.dslfueraachen.de, DNS:www.gigabit-pascalstrasse.de, DNS:www.glasfaser-pascalstrasse.de, DNS:www.relaex.net, DNS:www.relaix-glasfasernetz.de, DNS:www.relaix-networks.de, DNS:www.relaix.biz, DNS:www.relaix.de, DNS:www.relaix.eu, DNS:www.relaix.info, DNS:www.relaix.nrw, DNS:www.relax-networks.de, DNS:www.xn--gigabit-pascalstrae-2tb.de, DNS:www.xn--glasfaser-pascalstrae-kzb.de, DNS:xn--gigabit-pascalstrae-2tb.de, DNS:xn--glasfaser-pascalstrae-kzb.de

SHA-256 fingerprint

AD:68:62:8D:58:50:EB:86:DE:54:82:0E:F3:59:57:76:7A:5A:EE:09:88:A2:B6:CF:25:E7:7E:0A:62:7F:D8:C5
Certificate extensions & PEM
keyUsage
Digital Signature
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
subjectKeyIdentifier
95:BC:3B:E2:B8:BB:2D:DB:3E:0C:E7:90:CF:45:BB:37:39:3D:F0:DA
authorityKeyIdentifier
BB:20:CA:47:0B:FE:D7:E5:9C:F9:8F:09:2A:A3:8C:37:45:B1:BC:D8
authorityInfoAccess
CA Issuers - URI:http://ye1.i.lencr.org/
subjectAltName
DNS:dsl-fuer-aachen.de, DNS:dslfueraachen.de, DNS:gigabit-pascalstrasse.de, DNS:glasfaser-pascalstrasse.de, DNS:redirect.relaix.net, DNS:relaex.net, DNS:relaix-glasfasernetz.de, DNS:relaix-networks.de, DNS:relaix.biz, DNS:relaix.de, DNS:relaix.eu, DNS:relaix.info, DNS:relaix.net, DNS:relaix.nrw, DNS:relax-networks.de, DNS:sicher.relaix.net, DNS:www.dsl-fuer-aachen.de, DNS:www.dslfueraachen.de, DNS:www.gigabit-pascalstrasse.de, DNS:www.glasfaser-pascalstrasse.de, DNS:www.relaex.net, DNS:www.relaix-glasfasernetz.de, DNS:www.relaix-networks.de, DNS:www.relaix.biz, DNS:www.relaix.de, DNS:www.relaix.eu, DNS:www.relaix.info, DNS:www.relaix.nrw, DNS:www.relax-networks.de, DNS:www.xn--gigabit-pascalstrae-2tb.de, DNS:www.xn--glasfaser-pascalstrae-kzb.de, DNS:xn--gigabit-pascalstrae-2tb.de, DNS:xn--glasfaser-pascalstrae-kzb.de
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://ye1.c.lencr.org/84.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 : Oct 2 01:04:16.828 2026 GMT Extensions: none Signature : ecdsa-with-SHA256 30:46:02:21:00:84:CA:6A:82:FD:FC:97:72:89:AC:A1: EF:3C:DF:B2:87:CE:3A:68:98:A6:8D:4A:0E:F0:CA:A9: EC:A2:CC:41:61:02:21:00:EC:0F:80:32:B7:1E:EC:42: 9B:54:BC:FF:C1:64:38:F1:B8:01:62:4B:21:C8:24:D2: 11:D7:A5:75:24:26:FA:29 Signed Certificate Timestamp: Version : v1 (0x0) Log ID : 26:E3:64:6E:58:69:21:23:BC:34:3F:47:24:35:9B:37: 92:CD:24:5A:88:D8:15:D3:93:33:FD:99:18:AB:47:23 Timestamp : Oct 2 01:04:14.240 2026 GMT Extensions: 00:00:05:00:48:DC:11:7E Signature : ecdsa-with-SHA256 30:45:02:21:00:D4:85:AF:C7:82:9B:3E:03:BE:1C:CB: AE:4D:63:E6:9D:5E:94:25:35:13:A1:C0:CE:8E:D5:54: 54:07:A2:7D:E0:02:20:43:A6:77:79:8C:FF:8B:6E:6C: 1F:A6:FE:63:B0:69:D5:DF:F5:45:C7:41:6F:1E:09:EA: 18:67:E7:11:15:8E:7D
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-10-07T06:55:04+00:00

Server-presented chain · 3 additional certificates

Chain certificate 1

Subject
C=US O=Let's Encrypt CN=YE1
Issuer
C=US O=ISRG CN=Root YE
Valid from
2025-09-03T00:00:00+00:00
Expires
2028-09-02T23:59:59+00:00
Days remaining
696
Serial (hex)
5DDD70DD31F801C85C186A7A04B80AFE
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

A2:37:2D:06:43:1E:97:16:36:5E:EE:D4:7E:C0:20:35:14:97:D1:82:FC:C0:38:E4:57:E5:81:68:A0:3C:AC:07
Certificate extensions & PEM
keyUsage
Digital Signature, Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE, pathlen:0
subjectKeyIdentifier
BB:20:CA:47:0B:FE:D7:E5:9C:F9:8F:09:2A:A3:8C:37:45:B1:BC:D8
authorityKeyIdentifier
A3:C8:26:5A:8E:A1:4C:D0:35:63:FC:9B:23:C8:3A:AE:56:F3:4F:56
authorityInfoAccess
CA Issuers - URI:http://ye.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://ye.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 2

Subject
C=US O=ISRG CN=Root YE
Issuer
C=US O=Internet Security Research Group CN=ISRG Root X2
Valid from
2026-05-13T00:00:00+00:00
Expires
2032-09-02T23:59:59+00:00
Days remaining
2157
Serial (hex)
872165FC34B6E5FBA8ADD5B3705FB53A
Signature
ecdsa-with-SHA384
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

0F:C0:90:1C:CA:2B:AE:9E:9F:DB:B0:2D:50:D0:2F:10:94:F7:B3:66:72:08:69:91:B9:E8:97:62:6D:C4:85:F0
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
A3:C8:26:5A:8E:A1:4C:D0:35:63:FC:9B:23:C8:3A:AE:56:F3:4F:56
authorityKeyIdentifier
7C:42:96:AE:DE:4B:48:3B:FA:92:F8:9E:8C:CF:6D:8B:A9:72:37:95
authorityInfoAccess
CA Issuers - URI:http://x2.i.lencr.org/
certificatePolicies
Policy: 2.23.140.1.2.1
crlDistributionPoints
Full Name: URI:http://x2.c.lencr.org/ 
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Chain certificate 3

Subject
C=US O=Internet Security Research Group CN=ISRG Root X2
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
2157
Serial (hex)
6C8F1DC727C7117F7BAF853AC980F9CD
Signature
RSA-SHA256
Public key
EC 384 secp384r1

Subject alternative names (SAN)

No SAN extension was presented.

SHA-256 fingerprint

EE:5F:7A:BD:69:81:BB:02:55:63:2C:D8:F4:92:83:45:1B:4B:18:84:4D:12:04:0B:44:EE:00:F0:7B:8F:E2:C6
Certificate extensions & PEM
keyUsage
Certificate Sign, CRL Sign
extendedKeyUsage
TLS Web Server Authentication, TLS Web Client Authentication
basicConstraints
CA:TRUE
subjectKeyIdentifier
7C:42:96:AE:DE:4B:48:3B:FA:92:F8:9E:8C:CF:6D:8B:A9:72:37:95
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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