DNS Record Lookup
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Hosting & Network
syc.cz runs on AS41453, with email configured.
- Hosting network
- AS41453AS41453
- Managed DNS
- Self-hosted / other
- Configured
- IPv6 (AAAA)
- Not enabled
- CAA pinning
- None
Sits alongside 244 other sites on AS41453. Stable here since we started watching (Jul 23, 2026).
The apex and www are the same hosting — the apex via A records, www via a CNAME to manon.vellum.cz.
DNS Records for syc.cz
| Hostname | Type | TTL | Priority | Content |
|---|---|---|---|---|
| syc.cz | A | 0 | 89.250.243.243 | |
| syc.cz | NS | 0 | manon.vellum.cz | |
| syc.cz | NS | 0 | dolly.vellum.cz | |
| syc.cz | TXT | 0 | v=spf1 mx a ip4:89.250.243.0/24 ip4:46.135.0.0/16 ip4:194.228.0.0/16 include:spf.protection.outlook.com include:_spf.google.com ~all | |
| syc.cz | MX | 0 | 23 | mail2.vellum.cz |
| syc.cz | MX | 0 | 13 | manon.vellum.cz |
| syc.cz | SOA | 14400 | manon.vellum.cz hostmaster.vellum.cz 2023091901 14400 4380 1209600 14400 | |
| www.syc.cz | CNAME | 0 | manon.vellum.cz | |
| www.syc.cz | TXT | 0 | v=spf1 mx a ip4:89.250.243.243 ip4:89.250.240.0/24 include:_spf.google.com include:centrum.cz ~all | |
| www.syc.cz | A | 0 | 89.250.243.243 |
Get alerted the moment syc.cz's DNS changes
This page is today's snapshot. Turn on monitoring and we'll watch syc.cz 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