DNS Record Lookup
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Hosting & Network
calculus.org runs on AS6192, with email configured.
- Hosting network
- AS6192AS6192
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 36 other sites on AS6192. Stable here since we started watching (Jul 20, 2026).
The apex and www are the same hosting — the apex via A records.
DNS Records for calculus.org
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| calculus.org | SOA | 3600 | ns1.math.ucdavis.edu hostmaster.math.ucdavis.edu 2026092000 21600 1800 1814400 3600 | |
| calculus.org | NS | 0 | ns1.math.ucdavis.edu | |
| calculus.org | NS | 0 | ns2.math.ucdavis.edu | |
| calculus.org | A | 0 | 169.237.99.135 | |
| calculus.org | MX | 0 | 5 | mx1.math.ucdavis.edu |
| calculus.org | TXT | 0 | v=spf1 mx a:mail.math.ucdavis.edu a:slope.math.ucdavis.edu a:step.math.ucdavis.edu include:servers.mcsv.net ~all | |
| www.calculus.org | A | 0 | 169.237.99.135 | |
| www.calculus.org | MX | 0 | 10 | mean.calculus.org |
Get alerted the moment calculus.org's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch calculus.org 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
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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