Hostname
1und1.net
Last fetched
1und1.net resolves to 1 IPv4 address operated by AS8881 in DE. WHOIS lists iana:15 as the registrar.
Nutrition Label
Resolution chain
1und1.net 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 |
|---|---|---|---|---|
| 212.7.147.145 | 212.7.128.0/19 | AS8881 | — | DE |
WHOIS identity
- Registrar
- iana:15
- Organization
- 1&1 internet
- Contact emails
Subdomains
72 observed subdomains of 1und1.net.
Showing 25 of 72. View all subdomains →
Web-graph footprint
Distinct hostnames that link to or from 1und1.net in the public web crawl.
172 sites link to this hostname.
176 sites linked to from this hostname.
Sample inbound links
Threat posture
History
Mail and authentication
MX records
SPF policy
10 SPF mechanisms authorising senders for 1und1.net.
| Mechanism | Target |
|---|---|
| SPF_A | mailintvt.versatel.de |
| SPF_A | mxintlb11fl.versatel.de |
| SPF_A | mxintlb12fl.versatel.de |
| SPF_A | mxout01hhb.1und1.net |
| SPF_A | mxout02hhb.1und1.net |
| SPF_INCLUDE | _spf-dc55.sapsf.eu |
| SPF_INCLUDE | _spf.zimpel.de |
| SPF_INCLUDE | spf.dtms.de |
| SPF_IP | 212.125.32.0/24 |
| SPF_IP | 212.125.36.0/24 |
Related pages
Pivot deeper into the graph from 1und1.net.
Cypher and MCP
Reproduce the resolution chain directly against graph.whisper.security:
MATCH (h:HOSTNAME {name: "1und1.net"})-[: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.