Simpson Manufacturing Co. Inc. designs, engineers, and manufactures structural connectors, anchors, and venting systems for construction and appliance markets through its subsidiaries Simpson Strong-Tie Company, Inc. and Simpson Dura-Vent Company, Inc. The company serves new construction, retrofitting, and DIY customers from its headquarters in Pleasanton, California.
Verifying against the live site and live WHOIS/DNS…
Is this your website? Claim it free and put your brand at the top of this page — the record stays, and starts working for you.Claim this profile — free
Authority
57/100
Safety
84/100
Registered
Oct 10, 1996
29 years old · 1API GmbH
1 of 2 safety checks passed (Sep 8, 2026).
AboutUs has not vetted this site. 1 of 2 automated safety check did not pass. Everything below is what we could measure automatically. Anything you do on the site — paying, sharing personal details, downloading — is between you and the site, not AboutUs.
Current facts
What AboutUs observed on the live site and in WHOIS/DNS today. These are measurements, not an endorsement of the site.
checked now
Domain registered Oct 10, 1996 — 29 years old.
checked now
Registrar today: 1API GmbH — unchanged since AboutUs began tracking (Sep 8, 2026).