DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
rsc-book.online runs on AS150172, with email configured.
- Hosting network
- AS150172AS150172
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 565 other sites on AS150172. Stable here since we started watching (Jul 17, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to rsc-book.online.
DNS Records for rsc-book.online
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| rsc-book.online | NS | 0 | dns1.herodns.net | |
| rsc-book.online | NS | 0 | dns2.herodns.net | |
| rsc-book.online | SOA | 86400 | dns1.herodns.net root.system.serverfreak.net 2026072300 3600 1800 1209600 86400 | |
| rsc-book.online | A | 0 | 103.10.78.45 | |
| rsc-book.online | TXT | 0 | v=spf1 +a +mx +ip4:103.10.78.45 +ip4:220.158.201.18 +ip4:220.158.200.153 ~all | |
| rsc-book.online | MX | 0 | rsc-book.online | |
| www.rsc-book.online | TXT | 0 | v=spf1 +a +mx +ip4:103.10.78.45 +ip4:220.158.201.18 +ip4:220.158.200.153 ~all | |
| www.rsc-book.online | A | 0 | 103.10.78.45 | |
| www.rsc-book.online | NS | 0 | dns2.herodns.net | |
| www.rsc-book.online | NS | 0 | dns1.herodns.net | |
| www.rsc-book.online | SOA | 86400 | dns1.herodns.net root.system.serverfreak.net 2026072300 3600 1800 1209600 86400 | |
| www.rsc-book.online | CNAME | 0 | rsc-book.online | |
| www.rsc-book.online | MX | 0 | rsc-book.online |
What's up with DNS →
Our daily roundup of the most interesting DNS changes across the web — hosting and CDN migrations, network moves, and security-config shifts.
Ask about rsc-book.online
BetaAnswers use the live DNS records shown on this page. AI-generated — double-check anything important.
Get alerted the moment rsc-book.online's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch rsc-book.online 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.
Free for your first domain: uptime, DNS, and certificate together. No credit card.
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