What powers 
sleeper.com?
Last seen Sep 2026 · 38 technologies across 22 categories
Analytics
Blogs
Caching
CDN
CMS
Cookie compliance
Development
Font scripts
Issue trackers
JavaScript frameworks
JavaScript libraries
Live chat
Marketing automation
Miscellaneous
PaaS
Performance
Programming languages
Security
Tag managers
Web frameworks
Web servers
Webmail
AI Crawlers
Doesn't name any of the 33 AI crawlers we track in its robots.txt. Catch-all rules (User-agent: *) restrict some paths for every crawler, AI or not. Checked Oct 2026. A recent check saw a policy file missing; awaiting confirmation.
- robots.txt found
- llms.txt found
- ai.txt not found
- Sep 2026 llms.txt appeared
- Sep 2026 *: Restricted (was Allowed)
- Aug 2026 robots.txt appeared
- Aug 2026 * added to robots.txt
Top search keywords
| Keyword | Position | Est. monthly visits |
|---|---|---|
| sleeper | #1 | 45,800 |
| sleeper fantasy football | #1 | 9,200 |
| sleeper app | #2 | 2,900 |
| fantasy sleepers | #1 | 1,600 |
| fantasy football sleepers | #2 | 1,500 |
| ppr | #3 | 1,400 |
| how many major league baseball games in a season | #7 | 1,200 |
| how many nhl games per season | #4 | 1,100 |
| sleeper app fantasy football | #1 | 1,100 |
| sleeper fantasy football app | #1 | 880 |
| how many games are in a nhl season | #5 | 780 |
| fantasy football platforms | #3 | 720 |
| how many mlb games per season | #10 | 680 |
| nfl mock draft sim | #38 | 520 |
| nfl draft mock simulator | #37 | 520 |
| earned run average | #18 | 450 |
| how many rounds fantasy football draft | #1 | 400 |
| nfl mock draft simulator | #26 | 390 |
| what time is it the super bowl | #39 | 390 |
| fantasy football | #87 | 390 |
| fantasy football | #33 | 390 |
| sleeper fantasy | #1 | 370 |
| sleeper pick | #1 | 370 |
| how many games in mlb season | #8 | 360 |
| funny fantasy basketball league names | #4 | 360 |
The site's top keywords in Google (US), with the visits each one is estimated to bring per month.
Top backlinks
Top links pointing at the site, one per source domain, strongest first. The anchor text opens the page carrying the link.
AI Crawlers
No AI crawlers blocked
Standards: llms.txt
Audience
- 83% desktop
- 17% phone
United States
Canada
Australia
Mexico
Germany
Brazil
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
5.17 / 10 · ranked #231,534 of all domains
185 referring domains · OpenPageRank
Search traffic
107,700 est. monthly organic visits (US)
17,545 keywords in Google's top 30
Core Web Vitals
| LCP | 1.7 s |
| INP | 125 ms |
| CLS | 0 |
| TTFB | 300 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 3.6 MB · 202 requests
- Structured data: OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Registered Dec 2001 (24 years) via Name.com, Inc., renews Dec 2030
- Hosted on Cloudflare (104.18.14.193, IPv6)
- DNS: Cloudflare DNS
- Email: Google Workspace
- Email security: no SPF record, DMARC quarantine
- SSL: Google Trust Services, ECDSA P256, wildcard, expires Nov 2026
- Common Crawl link graph: rank 124,626, 9 hosts
DNS records as swept Oct 2026, certificate as seen Oct 2026, registration from the registry's RDAP service. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| sleeper.com | 17 |
| newsletter.sleeper.com | 15 |
| blog.sleeper.com | 14 |
| support.sleeper.com | 10 |
| 17-0.sleeper.com | 8 |
| guesstheplayer.sleeper.com | 8 |
| perfect11.sleeper.com | 8 |
| docs.sleeper.com | 7 |
| ringchaser.sleeper.com | 7 |
Full technology history →
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Recent changes
- dropped Lodash Aug 2026
- dropped Radix UI Jul 2026
- dropped Tailwind CSS Jul 2026
- detected Turbopack Jul 2026
- detected Lodash Feb 2026