DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
http3.is runs on Fastly, with DNS by Google.
- Hosting network
- FastlyAS54113Fastly
- Managed DNS
- None
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 4,999+ other sites on Fastly. Stable here since we started watching (Aug 11, 2026).
DNS Records for http3.is
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| http3.is | SOA | 1800 | edns1.ultradns.com hostmaster.fastly.com 58 3600 600 604800 1800 | |
| http3.is | A | 0 | 151.101.193.91 | |
| http3.is | A | 0 | 151.101.65.91 | |
| http3.is | A | 0 | 151.101.129.91 | |
| http3.is | A | 0 | 151.101.1.91 | |
| http3.is | NS | 0 | walnut.fastlydns.net | |
| http3.is | NS | 0 | ns-cloud-c1.googledomains.com | |
| http3.is | NS | 0 | edns1.ultradns.com | |
| http3.is | NS | 0 | walnut.fastlydns.dev |
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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