Summary
- HTTP status
- 200
- IP address
- 207.241.234.205
- ASN
- —
- Hosting provider
- Internet Archive
- Country
- US
- Title
- Welcome to Open Library | Open Library
- Description
- Open Library is an open, editable library catalog, building towards a web page for every book ever published. Read, borrow, and discover more than 3M books for free.
- Language
- en
- Server
- nginx/1.30.5
- Generator
- —
- Certificate
- ValidLet's Encrypt
- Sitemap
- Present
- Domain name
- openlibrary.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).
Free certificate issued by Let's Encrypt: valid for a few months, it is renewed automatically.
- Certificate authority
- Let's Encrypt (YR1)
- Validation type
- Domain validation (DV)
- Status
- Valid
- Covered domains
- openlibrary.org, www.openlibrary.org
- Valid from
- August 30, 2026
- Valid until
- November 28, 2026 (expires in 56 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 robots.txt file declares 1 sitemap.
| File | Content | Last modified |
|---|---|---|
| https://openlibrary.org/static/sitemaps/siteindex.xml.gz | Index of 6,117 sitemaps | March 2, 2026 |
Redirects
The website address does not redirect.
Outgoing links
The home page links to 6 other websites.