DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
holborn.ca runs on Cloudflare, with DNS by Cloudflare and email via Microsoft 365.
- Hosting network
- CloudflareAS13335Cloudflare
- Managed DNS
- Cloudflare
- Microsoft 365
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 4,344,541 other sites on Cloudflare. Stable here since we started watching (Oct 2, 2026).
DNS Records for holborn.ca
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| holborn.ca | MX | 0 | holborn-ca.mail.protection.outlook.com | |
| holborn.ca | AAAA | 0 | 2606:4700:3037::6815:3812 | |
| holborn.ca | AAAA | 0 | 2606:4700:3030::ac43:aff8 | |
| holborn.ca | A | 0 | 172.67.175.248 | |
| holborn.ca | A | 0 | 104.21.56.18 | |
| holborn.ca | SOA | 1800 | aldo.ns.cloudflare.com dns.cloudflare.com 2416026564 10000 2400 604800 1800 | |
| holborn.ca | TXT | 0 | sophos-domain-verification=f8cc520ee38f74a2373e02d0c791410ab9efa4e5 | |
| holborn.ca | TXT | 0 | google-site-verification=z65f1nqOFmWCmvDFdNAPP9PpBmR6HKg8w4rhTlaHQzc | |
| holborn.ca | TXT | 0 | v=spf1 include:spf.protection.outlook.com include:mailgun.org include:spf-westus.emailsignatures365.com -all | |
| holborn.ca | TXT | 0 | sophos-domain-verification=31ee80a20007b977a7693915959ca3902b4560c520f063ed38faf89d649878ed | |
| holborn.ca | TXT | 0 | google-site-verification=pnFwBwgl7jF2huy5VDbRsrLXHShQEYP6Y87GHjQzxz0 | |
| holborn.ca | TXT | 0 | google-site-verification=yWrzufT4rfD_43rtXihXGiD7VzFPLzEPlnlPAKkFpdc | |
| holborn.ca | NS | 0 | aldo.ns.cloudflare.com | |
| holborn.ca | NS | 0 | cass.ns.cloudflare.com | |
| www.holborn.ca | MX | 0 | holborn-ca.mail.protection.outlook.com | |
| www.holborn.ca | NS | 0 | aldo.ns.cloudflare.com | |
| www.holborn.ca | NS | 0 | cass.ns.cloudflare.com | |
| www.holborn.ca | CNAME | 0 | holborn.ca | |
| www.holborn.ca | SOA | 1800 | aldo.ns.cloudflare.com dns.cloudflare.com 2416026564 10000 2400 604800 1800 | |
| www.holborn.ca | A | 0 | 172.105.3.30 | |
| www.holborn.ca | TXT | 0 | google-site-verification=yWrzufT4rfD_43rtXihXGiD7VzFPLzEPlnlPAKkFpdc | |
| www.holborn.ca | TXT | 0 | google-site-verification=z65f1nqOFmWCmvDFdNAPP9PpBmR6HKg8w4rhTlaHQzc | |
| www.holborn.ca | TXT | 0 | sophos-domain-verification=f8cc520ee38f74a2373e02d0c791410ab9efa4e5 | |
| www.holborn.ca | TXT | 0 | google-site-verification=pnFwBwgl7jF2huy5VDbRsrLXHShQEYP6Y87GHjQzxz0 | |
| www.holborn.ca | TXT | 0 | v=spf1 include:spf.protection.outlook.com include:mailgun.org include:spf-westus.emailsignatures365.com -all | |
| www.holborn.ca | TXT | 0 | sophos-domain-verification=31ee80a20007b977a7693915959ca3902b4560c520f063ed38faf89d649878ed |
Get alerted the moment holborn.ca's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch holborn.ca 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