DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
hearttruth.gov runs on AS3527, with DNS by Azure DNS.
- Hosting network
- AS3527AS3527
- Managed DNS
- Azure DNS
- None
- IPv6 (AAAA)
- Enabled
- CAA pinning
- None
Sits alongside 22 other sites on AS3527. Stable here since we started watching (Sep 1, 2026).
DNS Records for hearttruth.gov
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| hearttruth.gov | AAAA | 0 | 2607:f220:414:22e:156:40:18:44 | |
| hearttruth.gov | NS | 0 | ns2-03.azure-dns.net | |
| hearttruth.gov | NS | 0 | ns1-03.azure-dns.com | |
| hearttruth.gov | NS | 0 | ns3-03.azure-dns.org | |
| hearttruth.gov | NS | 0 | ns4-03.azure-dns.info | |
| hearttruth.gov | A | 0 | 156.40.18.44 | |
| hearttruth.gov | SOA | 300 | ns1-03.azure-dns.com azuredns-hostmaster.microsoft.com 1 3600 300 2419200 300 | |
| hearttruth.gov | TXT | 0 | v=spf1 a ptr -all | |
| hearttruth.gov | TXT | 0 | identrust_validate=eXClhu7RD4mSzsFbjW7aDvlqTzJcqPW4Tmg4gve/0y0A | |
| www.hearttruth.gov | CNAME | 0 | www.nhlbi.nih.gov | |
| www.hearttruth.gov | AAAA | 0 | 2603:1061:14:49::1 | |
| www.hearttruth.gov | A | 0 | 150.171.109.72 |
Get alerted the moment hearttruth.gov's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch hearttruth.gov 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