SSL/TLS Certificate Lookup

Check a domain's SSL/TLS certificate — who issued it, when it expires, and whether the chain is trusted

SSL/TLS Certificate for arr-official.id

Valid
Issued by (CA)
Let's Encrypt
Subject
arr-official.id
Valid from
Sep 20, 2026
Valid until
Dec 19, 2026 (62 days remaining)
Public key
EC 256-bit
Serial
0527C6EB71E859B0C7AE083EE192D0272F77
SHA-256 fingerprint
13:F2:A2:96:FB:0F:87:24:1D:07:B2:53:61:DB:87:2C:FB:9E:4A:F8:41:67:F1:AE:56:EF:3D:85:A2:8E:60:BB
Chain
YE2 → Root YE → ISRG Root X2 → ISRG Root X1
Subject Alternative Names (2)
*.arr-official.id, arr-official.id

Certificate Authority Authorization (CAA)

No CAA policy is published for this domain — any certificate authority may issue for it.

This certificate has been served since Oct 11, 2026.

Never get surprised by arr-official.id's certificate expiring

This is today's certificate. Turn on monitoring and we'll watch arr-official.id continuously, notifying you the moment anything moves across all three signals:

Certificate monitor showing the issuer, expiry date, chain status, fingerprint, covered names, and a history of a rotation and an expiry warning

Uptime

We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.

DNS changes

We watch NS, MX, CAA, CNAME, TXT and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.

TLS certificate

We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.

Monitor this certificate free

Free for your first domain: uptime, DNS, and certificate together. No credit card.