Hostname
jeffco.us
Last fetched
jeffco.us resolves to 1 IPv4 address operated by AS35280 in NL. WHOIS lists iana:9 as the registrar.
Nutrition Label
Resolution chain
jeffco.us 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 |
|---|---|---|---|---|
| 159.60.135.5 | 159.60.128.0/20 | AS35280 | — | NL |
WHOIS identity
- Registrar
- iana:9
- Organization
- itsunix jeffco
- Contact emails
Subdomains
62 observed subdomains of jeffco.us.
Showing 25 of 62. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from jeffco.us in the public web crawl.
1,722 sites link to this hostname.
Threat posture
History
Mail and authentication
MX records
SPF policy
11 SPF mechanisms authorising senders for jeffco.us.
| Mechanism | Target |
|---|---|
| SPF_A | mail.womzai.com |
| SPF_INCLUDE | _spf.mlsend.com |
| SPF_INCLUDE | _spf.salesforce.com |
| SPF_INCLUDE | spf-0010c902.pphosted.com |
| SPF_INCLUDE | spf.qscend.com |
| SPF_IP | 166.78.71.191/32 |
| SPF_IP | 205.201.133.57/32 |
| SPF_IP | 34.216.119.1 |
| SPF_IP | 52.24.85.245 |
| SPF_IP | 54.235.108.91/32 |
| SPF_MX | jeffco.us |
Related pages
Pivot deeper into the graph from jeffco.us.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "jeffco.us"})-[: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.