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Hosting & Network
core-us.fr runs on AS207992, with email configured.
- Hosting network
- AS207992AS207992
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- Set
Sits alongside 178 other sites on AS207992. Stable here since we started watching (Sep 9, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to core-us.fr.
DNS Records for core-us.fr
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| core-us.fr | NS | 0 | dns01.core-us.fr | |
| core-us.fr | NS | 0 | dns02.core-us.fr | |
| core-us.fr | SOA | 3600 | dns01.core-us.fr hostmaster.core-us.fr 2026092301 10800 3600 604800 3600 | |
| core-us.fr | A | 0 | 194.11.20.237 | |
| core-us.fr | TXT | 0 | v=spf1 mx ip4:194.11.20.58 ip4:194.11.20.254 ip4:194.11.20.239 +include:spf.core-us.fr -all | |
| core-us.fr | TXT | 0 | 4|core-us.fr | |
| core-us.fr | TXT | 0 | 1|www.core-us.fr | |
| core-us.fr | TXT | 0 | google-site-verification=T7RfTXqh-bPWi00Vs76qqaOEoEg60iDXSMsDnMH0pjU | |
| core-us.fr | CAA | 0 | 0 issue letsencrypt.org | |
| core-us.fr | MX | 0 | 5 | filtrage.core-us.fr |
| core-us.fr | MX | 0 | 10 | mx.core-us.fr |
| www.core-us.fr | NS | 0 | dns02.core-us.fr | |
| www.core-us.fr | NS | 0 | dns01.core-us.fr | |
| www.core-us.fr | SOA | 3600 | dns01.core-us.fr hostmaster.core-us.fr 2026092301 10800 3600 604800 3600 | |
| www.core-us.fr | A | 0 | 194.11.20.237 | |
| www.core-us.fr | MX | 0 | 5 | filtrage.core-us.fr |
| www.core-us.fr | MX | 0 | 10 | mx.core-us.fr |
| www.core-us.fr | CAA | 0 | 0 issue letsencrypt.org | |
| www.core-us.fr | CNAME | 0 | core-us.fr | |
| www.core-us.fr | TXT | 0 | 1|www.core-us.fr | |
| www.core-us.fr | TXT | 0 | v=spf1 mx ip4:194.11.20.58 ip4:194.11.20.254 ip4:194.11.20.239 +include:spf.core-us.fr -all | |
| www.core-us.fr | TXT | 0 | google-site-verification=T7RfTXqh-bPWi00Vs76qqaOEoEg60iDXSMsDnMH0pjU | |
| www.core-us.fr | TXT | 0 | 4|core-us.fr |
Get alerted the moment core-us.fr's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch core-us.fr 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