Hostname
jrc.cz
Last fetched
jrc.cz resolves to 4 IPv4 addresses operated by CLOUDFLARENET - Cloudflare, Inc. in CA. WHOIS lists registrar:reg-webglobe as the registrar.
Nutrition Label
Resolution chain
jrc.cz resolves to 4 distinct IPv4 addresses via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.
| IP | Prefix | ASN | Operator | Country |
|---|---|---|---|---|
| 104.20.28.120 | 104.20.16.0/20 | AS13335 | CLOUDFLARENET - Cloudflare, Inc. | CA |
| 172.66.158.127 | 172.66.144.0/20 | AS13335 | CLOUDFLARENET - Cloudflare, Inc. | CA |
| 8.47.69.0 | 8.47.69.0/24 | AS13335 | CLOUDFLARENET - Cloudflare, Inc. | US |
| 8.6.112.0 | 8.6.112.0/24 | AS13335 | CLOUDFLARENET - Cloudflare, Inc. | US |
WHOIS identity
- Registrar
- registrar:reg-webglobe
- Organization
- jrc czech a.s.
- Contact emails
Subdomains
23 observed subdomains of jrc.cz.
Web-graph footprint
Distinct hostnames that link to or from jrc.cz in the public web crawl.
249 sites link to this hostname.
13 sites linked to from this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
8 SPF mechanisms authorising senders for jrc.cz.
| Mechanism | Target |
|---|---|
| SPF_A | 7538.mail.zonercloud.net |
| SPF_A | mail.kiboon.cz |
| SPF_INCLUDE | spf.protection.outlook.com |
| SPF_INCLUDE | spfe.targito.com |
| SPF_IP | 208.73.7.117 |
| SPF_IP | 217.16.180.21/28 |
| SPF_IP | 81.0.236.96/27 |
| SPF_MX | jrc.cz |
Related pages
Pivot deeper into the graph from jrc.cz.
- IP · 104.20.28.120
- ASN · AS13335CLOUDFLARENET - Cloudflare, Inc.
- Registrar · registrar:reg-webglobe
- Country · CA
- Email · pavel@jarosek.cz
- TLD · .cz
- Browse hostnames · jr…
- Glossary · What is a hostname?
- Whisper Internet Directory — home
- Live MOAS conflicts feed
- Threat feed · Spamhaus DROP
- United States internet infrastructure
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "jrc.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.