SSL/TLS Certificate Lookup

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

notion.so

SSL/TLS Certificate

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SSL/TLS Certificate for notion.so

Valid
Issued by (CA)
Google Trust Services
Subject
notion.so
Valid from
Jun 15, 2026
Valid until
Sep 13, 2026 (54 days remaining)
Public key
EC 256-bit
Serial
D40D8C890FC116A70E129AD75161DAB2
SHA-256 fingerprint
2E:53:DB:DA:85:25:55:AB:01:1C:C3:6F:3A:06:CF:D6:8D:46:C4:3E:0D:42:44:1B:AA:3F:30:1C:51:82:51:2E
Chain
WE1 → GTS Root R4
Subject Alternative Names (5)
*.dev.notion.so, *.notion.so, *.stg.notion.so, *.www.notion.so, notion.so

Certificate Authority Authorization (CAA)

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