Summary
- HTTP status
- 200
- IP address
- 38.95.177.43
- ASN
- —
- Hosting provider
- Cogent Communications, LLC
- Country
- US
- Title
- Home | Optica
- Description
- Optica is the leading society in optics and photonics. Quality information and inspiring interactions through publications, meetings, and membership.
- Language
- —
- Server
- Microsoft-IIS/10.0 · ASP.NET
- Generator
- —
- Certificate
- ValidDigiCert Inc
- Sitemap
- Present
- Domain name
- osa.org
SSL/TLS certificate
The SSL/TLS certificate encrypts exchanges between visitors and the website (HTTPS) and proves its identity. It is issued by a certificate authority after a more or less thorough check: of the domain name only (DV), of the organization that owns it (OV), or extended validation (EV).
- Certificate authority
- DigiCert Inc (DigiCert Global G2 TLS RSA SHA256 2020 CA1)
- Validation type
- Organization validation (OV)
- Holder
- The Optical Society of America, Inc.
- Status
- Valid
- Covered domains
- www.optica.org, optica.org, www.osa.org
- Valid from
- July 14, 2026
- Valid until
- January 29, 2027 (expires in 118 days)
- Protocol
- TLSv1.3
- Key
- RSA 2048 bits
Sitemap
A sitemap lists the pages of a website to help search engines discover them. It can have any name when it is declared in the robots.txt file.
The website has no robots.txt file: the usual locations were checked.
| File | Content | Last modified |
|---|---|---|
| https://www.optica.org/sitemap.xml | 11,540 pages | October 2, 2026 |
Redirects
- 301 http://osa.org/
- 200 https://www.optica.org// — Final page
Outgoing links
The home page links to 7 other websites.