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Hosting & Network
si3.space runs on AS20804 (multi-homed across 2 networks), with DNS by Namecheap and email via Proton.
- Managed DNS
- Namecheap
- Proton
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 240 other sites on AS20804. Stable here since we started watching (Jul 15, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to si3.space.
DNS Records for si3.space
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| si3.space | MX | 0 | 10 | mail.protonmail.ch |
| si3.space | MX | 0 | 20 | mailsec.protonmail.ch |
| si3.space | NS | 0 | dns1.registrar-servers.com | |
| si3.space | NS | 0 | dns2.registrar-servers.com | |
| si3.space | A | 0 | 81.15.150.188 | |
| si3.space | TXT | 0 | protonmail-verification=8886fdfcab94be08a8de2ada5676666b7b19200d | |
| si3.space | TXT | 0 | 787aa238-931c-47a6-a59a-af122d506160=4b0ccd6ace93767c92a496b8a229e0fe91c4eb16f9617659ff2f345af1e1a9e3 to our DNS? 10:54 787aa238-931c-47a6-a59a-af122d506160=4b0ccd6ace93767c92a496b8a229e0fe91c4eb16f9617659ff2f345af1e1a9e3 | |
| si3.space | TXT | 0 | v=spf1 include:_spf.protonmail.ch ~all | |
| si3.space | SOA | 3601 | dns1.registrar-servers.com hostmaster.registrar-servers.com 1789156559 43200 3600 604800 3601 | |
| www.si3.space | MX | 0 | 10 | mail.protonmail.ch |
| www.si3.space | MX | 0 | 20 | mailsec.protonmail.ch |
| www.si3.space | SOA | 3601 | dns1.registrar-servers.com hostmaster.registrar-servers.com 1789156559 43200 3600 604800 3601 | |
| www.si3.space | TXT | 0 | 787aa238-931c-47a6-a59a-af122d506160=4b0ccd6ace93767c92a496b8a229e0fe91c4eb16f9617659ff2f345af1e1a9e3 to our DNS? 10:54 787aa238-931c-47a6-a59a-af122d506160=4b0ccd6ace93767c92a496b8a229e0fe91c4eb16f9617659ff2f345af1e1a9e3 | |
| www.si3.space | TXT | 0 | v=spf1 include:_spf.protonmail.ch ~all | |
| www.si3.space | TXT | 0 | protonmail-verification=8886fdfcab94be08a8de2ada5676666b7b19200d | |
| www.si3.space | A | 0 | 81.15.150.188 | |
| www.si3.space | NS | 0 | dns1.registrar-servers.com | |
| www.si3.space | NS | 0 | dns2.registrar-servers.com | |
| www.si3.space | CNAME | 0 | si3.space |
Get alerted the moment si3.space's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch si3.space continuously, notifying you the moment anything moves across all three signals:
Uptime
We visit the site from multiple regions worldwide and email you within minutes if it goes down, with a per-region breakdown so a real outage stands out from a regional blip.
DNS changes
We watch NS, MX, CAA, DNSSEC, CNAME and A/AAAA records, and identify the host, network, and ASN behind them, so a real migration or hijack stands out from routine noise.
TLS certificate
We warn you 30, 14, 7, and 1 days before it expires, and flag it if the issuing authority changes or the certificate is unexpectedly replaced.
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About DNS Records
DNS (Domain Name System) records are instructions that provide information about a domain, including its IP addresses, mail servers, and other services. Common record types include:
- SOA (Start of Authority) - Contains administrative information about the zone
- NS (Nameserver) - Specifies authoritative nameservers for the domain
- A (Address) - Maps a domain to an IPv4 address
- AAAA - Maps a domain to an IPv6 address
- CNAME (Canonical Name) - Creates an alias pointing to another domain
- MX (Mail Exchange) - Specifies mail servers for the domain