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Domain Due Diligence
Report for Ipv4only.arpa

Report Date January 14, 2026
Recommendation
Proceed
Overall Summary
Safe
Why we think so

ipv4only.arpa is a special-use domain name defined by the Internet Engineering Task Force (IETF). It is not a conventional website but part of network infrastructure that helps devices detect IPv6-only networks supporting IPv4 address synthesis. The domain resolves to fixed IPv4 addresses and plays a technical role in DNS64/NAT64 gateway systems, enabling communication between IPv4-only and IPv6-only hosts. It has been in use for over 12 years and shows no signs of web traffic or user engagement as it's not intended for general web browsing.

Confidence Score
90%

Risk Insights

🛡️

Special-use Domain for IPv6 Network Transition

Defines a technical function in IPv6/IPv4 communication.
Recognized and standardized by IETF in RFC 8880.
Not vulnerable to scams or phishing due to non-consumer nature.

Contradictory Signals

The lack of visible internet presence aligns with this domain's role as infrastructure, explaining the absence of contacts or support channels.

Signal A: No traffic or user engagement

Signal B: Very low contact/support presence

Category Scores

Identity 90/100
Reputation 95/100
Technical 100/100
Content 85/100
Legal 90/100
Business Validity 85/100

Red Flags & Warnings

  • No active website, engagement, or contact emails found, which is typical but means no support channels exist.

🔎 Detailed Checks & Analysis

Domain legitimacy and registration

Score: 95/100
Passed

"No registrar abuse or suspicious WHOIS data detected."

Reason: The domain is officially registered with valid authoritative name servers since 2013.

Traffic and engagement analytics

Score: 90/100
Passed

"Zero bounce rate and no traffic sources indicate purely technical use."

Reason: No visits or user engagement found, consistent with a special-use domain not meant for public browsing.

Blacklist and scam detection

Score: 100/100
Passed

"Security scans show no threats associated with ipv4only.arpa."

Reason: Not flagged by Google Safe Browsing or crypto scam blacklists; no reported scams or phishing activity.

Trademark conflicts

Score: 85/100
Passed

"USPTO search returned no results for the domain name or close matches."

Reason: No trademarks found that could cause brand impersonation or disputes.

Website contact and support presence

Score: 50/100
Failed

"No social or support channels available, which fits the domain's technical role."

Reason: No contact emails found and phone number appears unrelated; typical for special-use domains.

Public reputation and news

Score: 95/100
Passed

"No lawsuits, disputes, or consumer complaints documented."

Reason: No negative news or disputes; community reports confirm normal network behavior with this domain.

Your Next Steps

  • 1
    No action needed for end users as this domain serves internal network functions.
  • 2
    If you see frequent queries to ipv4only.arpa in your network logs, understand this is normal behavior for IPv6 transition mechanisms.
  • 3
    Monitor networks for unexpected traffic to maintain security but consider this domain safe by design.

Evidence & Citations

🕵🏻 Keep investigating

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