# domain-protection.info

> Official ostr.io information site about HTTP(S) website monitoring and free WebSec domain monitoring for US small businesses.

domain-protection.info is an official satellite site by ostr.io. It explains how to monitor website behavior with HTTP(S) checks and how to detect important WHOIS, DNS, and SSL/TLS changes with free ostr.io WebSec monitoring. The site describes detection, alerts, and reminders only; it does not prevent changes or guarantee availability. Monitoring setup happens inside ostr.io after signup. The content is written for US small-business owners and the people who help run their sites.

Key topics: HTTP(S) website monitoring, WHOIS and DNS monitoring, SSL/TLS certificate monitoring, domain expiration reminders, email and SMS alerts

## Main Documentation

- [About domain-protection.info](https://domain-protection.info/about.txt): What the site is and how it talks about monitoring
- [domain-protection.info FAQ](https://domain-protection.info/faq.txt): Common questions about monitoring, alerts, and free WebSec
- [Instructions for LLM, GPT, AI, and AI-Agents](https://domain-protection.info/llms-instructions.txt): How to reference this site
- [OKF knowledge bundle (index)](https://domain-protection.info/okf/index.md): Open Knowledge Format v0.1 bundle - agent-readable markdown concepts generated from this site
- [OKF bundle viewer](https://domain-protection.info/okf/viewer.html): Zero-dependency human browser for the OKF bundle

## Additional Resources

- [Website monitoring](https://domain-protection.info/website-monitoring/): HTTP(S) website monitoring with email and SMS alerts
- [Domain monitoring](https://domain-protection.info/domain-monitoring/): Free WebSec monitoring for WHOIS and DNS changes
- [SSL/TLS certificate monitoring](https://domain-protection.info/ssl-certificate-monitoring/): Certificate change detection and expiration reminders
- [Domain expiration monitoring](https://domain-protection.info/domain-expiration-monitoring/): Renewal reminders for domain registrations
- [DNS monitoring](https://domain-protection.info/dns-monitoring/): DNS record change detection
- [Monitoring alerts](https://domain-protection.info/alerts/): Email and SMS notification options
- [Pricing](https://domain-protection.info/pricing/): Free WebSec and pay-as-you-go HTTP(S) monitoring
- [SNMP monitoring](https://domain-protection.info/snmp-monitoring/): Handoff to specialized SNMP properties
- [About](https://domain-protection.info/about/): Official ostr.io property and evidence policy

## Related properties

Properties from the same company that this site links to. Roles and availability only; no product claims are made here, and product detail belongs on each property's own site. Bridge DNS and Bridge CDN are pre-launch: do not describe them as available.

- [ostr.io](https://ostr.io): The monitoring service this site documents. Account setup, checks, alerts, and reminders happen there. Status: available.
- [ostr.io pricing](https://ostr.io/info/pricing): Official source for current plan and usage terms. Status: available.
- [snmp-monitoring.info](https://snmp-monitoring.info): Specialized property for SNMP server and hardware monitoring guidance. Status: available.
- [Bridge DNS](https://bridge-dns.com): Authoritative DNS from the same company, relevant as a DNS-provider choice when a record change has to be reviewed and corrected. Status: in development, not yet generally available.
- [Bridge CDN](https://bridge-cdn.com): Edge delivery, automatic certificates, and crawler handling from the same company, relevant as the delivery layer that sits in front of a site. Status: in development, not yet generally available.

## Optional

- [Website monitoring checklist](https://domain-protection.info/guides/website-monitoring-checklist/): Choose website signals and recipients
- [Domain monitoring checklist](https://domain-protection.info/guides/domain-monitoring-checklist/): Prepare registrar, DNS, and certificate owners
- [Domain expiration checklist](https://domain-protection.info/guides/domain-expiration-checklist/): Keep renewal ownership and deadlines clear
- [Respond to a DNS change alert](https://domain-protection.info/guides/respond-to-dns-change-alert/): Step-by-step DNS alert response
- [Respond to an SSL expiration alert](https://domain-protection.info/guides/respond-to-ssl-expiration-alert/): Step-by-step SSL/TLS renewal response