Hostname
backer.cz
Last fetched
backer.cz resolves to 1 IPv4 address operated by IP4ISP - IP4ISP z.s.p.o in CZ. WHOIS lists registrar:reg-internet-cz as the registrar.
Nutrition Label
Resolution chain
backer.cz resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.
| IP | Prefix | ASN | Operator | Country |
|---|---|---|---|---|
| 188.120.211.10 | 188.120.192.0/19 | AS49985 | IP4ISP - IP4ISP z.s.p.o | CZ |
WHOIS identity
- Registrar
- registrar:reg-internet-cz
- Organization
- radek krejča
- Contact emails
- —
Subdomains
1,477 observed subdomains of backer.cz.
Showing 25 of 1,477. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from backer.cz in the public web crawl.
5 sites link to this hostname.
12 sites linked to from this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
9 SPF mechanisms authorising senders for backer.cz.
| Mechanism | Target |
|---|---|
| SPF_A | backer.cz |
| SPF_INCLUDE | gmail.com |
| SPF_IP | 2a02:768:0:0:0:0:0:dc1 |
| SPF_IP | 2a02:768:0:0:ae1f:6bff:fe62:7328 |
| SPF_IP | 2a02:768:0:0:ec4:7aff:fe89:f484 |
| SPF_IP | 2a02:768:0:1009::/64 |
| SPF_IP | 89.31.42.255/32 |
| SPF_IP | 92.62.225.0/24 |
| SPF_MX | backer.cz |
Related pages
Pivot deeper into the graph from backer.cz.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "backer.cz"})-[:RESOLVES_TO]->(ip:IPV4)
-[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)
-[:ROUTES]->(asn:ASN)-[:HAS_NAME]->(n:ASN_NAME)
RETURN ip.name AS ip, ap.name AS prefix, asn.name AS asn, n.name AS operator
LIMIT 20Or query Whisper from your own LLM workflow via the Whisper MCP server.