DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
optimism.io runs on Amazon AWS, with DNS by Cloudflare and email via Google Workspace.
- Hosting network
- Amazon AWSAS14618Amazon AWS
- Managed DNS
- Cloudflare
- Google Workspace
- IPv6 (AAAA)
- Enabled
- CAA pinning
- Set
Sits alongside 4,999+ other sites on Amazon AWS. Stable here since we started watching (Sep 4, 2026).
DNS Records for optimism.io
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| optimism.io | MX | 0 | 5 | alt1.aspmx.l.google.com |
| optimism.io | MX | 0 | 5 | alt2.aspmx.l.google.com |
| optimism.io | MX | 0 | 1 | aspmx.l.google.com |
| optimism.io | MX | 0 | 10 | aspmx2.googlemail.com |
| optimism.io | MX | 0 | 10 | aspmx3.googlemail.com |
| optimism.io | SOA | 1800 | eloise.ns.cloudflare.com dns.cloudflare.com 2413933217 10000 2400 604800 1800 | |
| optimism.io | NS | 0 | eloise.ns.cloudflare.com | |
| optimism.io | NS | 0 | hayes.ns.cloudflare.com | |
| optimism.io | A | 0 | 98.84.224.111 | |
| optimism.io | A | 0 | 18.208.88.157 | |
| optimism.io | AAAA | 0 | 2600:1f18:16e:df01::259 | |
| optimism.io | AAAA | 0 | 2600:1f18:16e:df01::258 | |
| optimism.io | CAA | 0 | 0 issuewild letsencrypt.org | |
| optimism.io | CAA | 0 | 0 issue amazon.com | |
| optimism.io | CAA | 0 | 0 issue pki.goog; cansignhttpexchanges=yes | |
| optimism.io | CAA | 0 | 0 issue letsencrypt.org | |
| optimism.io | CAA | 0 | 0 issuewild digicert.com; cansignhttpexchanges=yes | |
| optimism.io | CAA | 0 | 0 issuewild ssl.com | |
| optimism.io | CAA | 0 | 0 issue ssl.com | |
| optimism.io | CAA | 0 | 0 issue comodoca.com | |
| optimism.io | CAA | 0 | 0 issue digicert.com; cansignhttpexchanges=yes | |
| optimism.io | CAA | 0 | 0 issuewild pki.goog; cansignhttpexchanges=yes | |
| optimism.io | CAA | 0 | 0 issuewild comodoca.com | |
| optimism.io | TXT | 0 | notion-domain-verification=iiwrKweKz7nHUIYEDd3TIbeAyI8KUq0VdVbm17szqhl | |
| optimism.io | TXT | 0 | B285F784F6 | |
| optimism.io | TXT | 0 | anthropic-domain-verification-6s9pan=QJoZnHcTIy5RRIuJUCCPvjBbm | |
| optimism.io | TXT | 0 | google-site-verification=14WMOeYBgTpKOImgVm3LeVoC4pXxohRYqwkB8G7yjW0 | |
| optimism.io | TXT | 0 | figma-domain-verification=fcd3d073c8661987f94b491b908ff36f9c50b8a1eb562f0a98ab5459bbd7fb4a-1765385258 | |
| optimism.io | TXT | 0 | v=spf1 include:_spf.google.com include:mg-spf.greenhouse.io include:44826671.spf08.hubspotemail.net -all | |
| optimism.io | TXT | 0 | openai-domain-verification=dv-ROUKSl7COXherbXN8F2MjtJm | |
| optimism.io | TXT | 0 | anthropic-domain-verification-21959z=1z87b5ILoDZxiyAmaBEpmEjxH | |
| optimism.io | TXT | 0 | klaviyo-site-verification=XA6tqv | |
| www.optimism.io | AAAA | 0 | 2606:4700::6812:bdd | |
| www.optimism.io | AAAA | 0 | 2606:4700::6812:add | |
| www.optimism.io | A | 0 | 104.18.11.221 | |
| www.optimism.io | A | 0 | 104.18.10.221 |
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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