DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
opcode.sh runs on Cloudflare, with DNS by Cloudflare.
- Hosting network
- CloudflareAS13335Cloudflare
- Managed DNS
- Cloudflare
- None
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 3,579,847 other sites on Cloudflare. Stable here since we started watching (Jul 16, 2026).
DNS Records for opcode.sh
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| opcode.sh | SOA | 1800 | cleo.ns.cloudflare.com dns.cloudflare.com 2413997141 10000 2400 604800 1800 | |
| opcode.sh | NS | 0 | cleo.ns.cloudflare.com | |
| opcode.sh | NS | 0 | nucum.ns.cloudflare.com | |
| opcode.sh | TXT | 0 | google-site-verification=yNB_qu2rLJFWeD47WHiuk7BV-tZJQuRaCu_y_gUkS7k | |
| opcode.sh | A | 0 | 104.21.5.40 | |
| opcode.sh | A | 0 | 172.67.132.240 | |
| opcode.sh | AAAA | 0 | 2606:4700:3037::6815:528 | |
| opcode.sh | AAAA | 0 | 2606:4700:3030::ac43:84f0 |
Get alerted the moment opcode.sh's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch opcode.sh 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