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

ec2-18-159-255-255.eu-central-1.compute.amazonaws.com · 18.159.255.255:443

Unverified
Certificate verification failed. These are unverified certificate details presented by the server. SSL operation failed with code 1. OpenSSL Error messages: error:0A000086:SSL routines::certificate verify failed

Certificate verification failed

Subject
CN=kube-apiserver
Issuer
CN=kubernetes
Valid from
2026-09-11T07:16:03+00:00
Expires
2027-09-11T07:21:03+00:00
Days remaining
354
Serial (hex)
205AFFDD5104AC5D
Signature
RSA-SHA256
Public key
RSA 2048

Subject alternative names (SAN)

DNS:807836c14570dd62a311ca544be26a3e.gr7.eu-central-1.eks.amazonaws.com, DNS:ip-172-16-35-243.eu-central-1.compute.internal, DNS:kubernetes, DNS:kubernetes.default, DNS:kubernetes.default.svc, DNS:kubernetes.default.svc.cluster.local, IP Address:172.20.0.1, IP Address:10.0.1.183, IP Address:172.16.35.243

SHA-256 fingerprint

00:10:D3:AD:93:C5:93:CE:9F:E6:1D:A6:89:F1:97:7C:A8:64:EA:7C:03:E4:49:74:BE:05:77:D5:E5:7E:87:67
Certificate extensions & PEM
keyUsage
Digital Signature, Key Encipherment
extendedKeyUsage
TLS Web Server Authentication
basicConstraints
CA:FALSE
authorityKeyIdentifier
E8:89:16:0D:CC:3C:BC:DF:03:86:1E:F0:0A:F9:82:75:7E:F1:0D:E3
subjectAltName
DNS:807836c14570dd62a311ca544be26a3e.gr7.eu-central-1.eks.amazonaws.com, DNS:ip-172-16-35-243.eu-central-1.compute.internal, DNS:kubernetes, DNS:kubernetes.default, DNS:kubernetes.default.svc, DNS:kubernetes.default.svc.cluster.local, IP Address:172.20.0.1, IP Address:10.0.1.183, IP Address:172.16.35.243
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Cipher: TLS_AES_128_GCM_SHA256 · Checked 2026-09-21T16:26:29+00:00

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

View certificate JSON

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