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Hostname

return.st

Last fetched

return.st resolves to 104.21.61.254, announced in 104.21.48.0/20 by CLOUDFLARENET - Cloudflare, Inc. in CA. return.st is listed by 1 threat feed; reconciled level HIGH.

Threat posture

40threat score (procedure-native scale)

HIGH

Listed by 1 threat feed. At least one source recommends blocking.

Categories: Phishing

Threat feeds listing this
1
Verdict coverage
malicious-evidenced
First seen on a feed
Wed, 26 Aug 2026 14:45:24 GMT
Last seen on a feed
Tue, 15 Sep 2026 00:18:35 GMT

Nutrition Label

WHISPER CANON · return.stRouting diversity3.0/10Peering density10.0/10MOAS conflict✓ noneThreat-feed listings8.0/10WHOIS transparency0.0/10Resolver footprint6.3/10canon.whisper.security/host/return.st

Resolution chain

IPv6 resolution

Attribution

Cloudflare

cdn · ORIGIN_AS, CDN

WHOIS identity

WhisperGraph holds no WHOIS registrar, registrant organisation or contact email for return.st. WHOIS is recorded against the registrable domain, so a subdomain such as a www. host carries none of its own — check the registrable domain for this name.

Subdomains

Subdomain
843c2590cec0.return.st
mail.return.st
www.return.st

Showing 3 of 4. View all subdomains →

Mail and authentication

Nameservers

  • jen.ns.cloudflare.com
  • johnny.ns.cloudflare.com
  • lilith.ns.cloudflare.com
  • rajeev.ns.cloudflare.com
  • chip.diamwall.com
  • runah.diamwall.com
  • ns1.istanco.com
  • ns2.istanco.com

MX records

  • _dc-mx.843c2590cec0.return.st
  • mail.return.st

SPF policy

  • a: return.st
  • mx: return.st
  • ip: 66.94.97.77

Threat-feed evidence

History

Related pages

Pivot from return.st into the addresses, networks and registries it depends on.

Cypher and MCP

Reproduce this hostname's resolution chain against graph.whisper.security:

MATCH (h:HOSTNAME {name: "return.st"})-[:RESOLVES_TO]->(ip:IPV4)
      -[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)-[:ROUTES]->(a:ASN)
OPTIONAL MATCH (a)-[:HAS_NAME]->(n:ASN_NAME)
RETURN ip.name AS ip, ap.name AS prefix, a.name AS asn, n.name AS network
LIMIT 20

Or query Whisper from your own LLM workflow via the Whisper MCP server.