What powers phonebooks.com?
Last seen Sep 2026 · 25 technologies across 18 categories
Advertising
Analytics
Google Analytics
since Aug 2018
Authentication
Google Sign-in
since Feb 2021
CDN
Cloudflare
since Jan 2025
Cookie compliance
AdRoll CMP System
since Aug 2022
Funding Choices
since Feb 2024
Font scripts
JavaScript frameworks
JavaScript libraries
Preact
since Sep 2026
Load balancers
Amazon ALB
since Jun 2023
Miscellaneous
Open Graph
since Oct 2025
PaaS
Amazon Web Services
since Jun 2023
Performance
Priority Hints
since Oct 2025
Programming languages
Node.js
since Oct 2025
Security
Cloudflare Bot Management
since Jan 2025
DataDome
since Oct 2025
PerimeterX
since Oct 2025
reCAPTCHA
since Mar 2023
Tag managers
Google Tag Manager
since Mar 2023
Web servers
Webmail
Microsoft 365
since Sep 2026
Widgets
Twitter
since Aug 2018
AI Crawlers
robots.txt could not be read at the last check (Sep 2026), so its policy is unknown.
- robots.txt not checked
- llms.txt not checked
- ai.txt not checked
AI Crawlers
Policy unknown
Audience
- 78% desktop
- 22% phone
United States
Mexico
Where the site's Chrome visitors come from, largest estimated audience first.
Open Page Rank
2.40 / 10 · ranked #2,675,834 of all domains
25 referring domains · OpenPageRank
Core Web Vitals
| LCP | 2.3 s |
| INP | 50 ms |
| CLS | 0 |
| TTFB | 1900 ms |
Real user p75, Chrome UX Report, Aug 2026.
Page
- Language: English
- CDN: Cloudflare
- Weight: 0.6 MB · 78 requests
- Structured data: JSON-LD, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Sep 2026.
Infrastructure
- Hosted on Cloudflare (104.18.43.82)
- Email: Proofpoint Essentials
- Email security: SPF (hard fail), DMARC monitor only
- SSL: SSL.com, ECDSA P256, wildcard, expires Oct 2026
- Common Crawl link graph: rank 7,019,497, 3 hosts
- Verified with: Google, Microsoft 365
DNS records as swept Sep 2026, certificate as seen Sep 2026. How the web is hosted
Subdomains
| Host | Techs |
|---|---|
| www.phonebooks.com | 15 |
| cellphonenumber.phonebooks.com | 12 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Microsoft 365 Sep 2026
- detected Preact Sep 2026
- dropped AlmaLinux Jul 2026
- dropped jQuery Jul 2026
- dropped jQuery CDN Jul 2026
- dropped jQuery UI Jul 2026
- dropped PHP Jul 2026
- dropped Snowplow Analytics Jul 2026