DNS Record Lookup
Look up DNS records including A, AAAA, MX, NS, SOA, CNAME, TXT, and CAA records for any domain
Hosting & Network
b21c.com isn’t pointed at a host yet — it has nameservers configured but no A/AAAA records for us to trace to a hosting network.
- Managed DNS
- Cloudflare
- Cloudflare Email
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DNS Records for b21c.com
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| b21c.com | MX | 0 | 100 | route1.mx.cloudflare.net |
| b21c.com | MX | 0 | 11 | route3.mx.cloudflare.net |
| b21c.com | MX | 0 | 83 | route2.mx.cloudflare.net |
| b21c.com | SOA | 1800 | alexa.ns.cloudflare.com dns.cloudflare.com 2415638519 10000 2400 604800 1800 | |
| b21c.com | TXT | 0 | v=spf1 include:_spf.mx.cloudflare.net include:_spf.google.com ~all | |
| b21c.com | NS | 0 | alexa.ns.cloudflare.com | |
| b21c.com | NS | 0 | kevin.ns.cloudflare.com | |
| b21c.com | CAA | 0 | 0 issue digicert.com; cansignhttpexchanges=yes | |
| b21c.com | CAA | 0 | 0 issue letsencrypt.org | |
| b21c.com | CAA | 0 | 0 issuewild pki.goog; cansignhttpexchanges=yes | |
| b21c.com | CAA | 0 | 0 issuewild ssl.com | |
| b21c.com | CAA | 0 | 0 issuewild comodoca.com | |
| b21c.com | CAA | 0 | 0 issuewild digicert.com; cansignhttpexchanges=yes | |
| b21c.com | CAA | 0 | 0 issuewild letsencrypt.org | |
| b21c.com | CAA | 0 | 0 issue ssl.com | |
| b21c.com | CAA | 0 | 0 issue pki.goog; cansignhttpexchanges=yes | |
| b21c.com | CAA | 0 | 0 issue comodoca.com | |
| www.b21c.com | A | 0 | 192.168.93.8 |
Get alerted the moment b21c.com's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch b21c.com 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