SurfaceMap › i › institutoptique.fr

institutoptique.fr

Checked 2026-10-22 03:31 UTC · first added 2026-10-21
✗Problems found Score 57 of 100

Domain & DNS

fail

18 passed 6 warn 1 failed

Areas

iRegistration !Delegation ✗Nameservers !SOA !DNSSEC !Records

Problems

  • ✗
    Nameservers not responding
    Nameservers · These addresses did not answer, so resolvers waste time on timeouts: dns1.institutoptique.fr (2001:660:302d:4001::b:145): read udp [2a01:4f8:1c1c:eebf::1]:58461->[2001:660:302d:4001::b:145]:53: i/o timeout; dns1.ioa.institutoptique.fr (2001:660:302d:8001::b:145): read udp [2a01:4f8:1c1c:eebf::1]:39938->[2001:660:302d:8001::b:145]:53: i/o timeout; dns2.institutoptique.fr (2001:660:302d:4001:0:dc:98:179): read udp [2a01:4f8:1c1c:eebf::1]:57937->[2001:660:302d:4001:0:dc:98:179]:53: i/o timeout; dns2.ioa.institutoptique.fr (2001:660:302d:8001:0:dc:98:179): read udp [2a01:4f8:1c1c:eebf::1]:37450->[2001:660:302d:8001:0:dc:98:179]:53: i/o timeout.
    #14
  • !
    NS sets differ
    Delegation · The nameservers at the parent and in the zone should be the same. Only at the parent: dns1.ioa.institutoptique.fr, dns2.ioa.institutoptique.fr. dns1.ioa.institutoptique.fr, dns2.institutoptique.fr, dns2.ioa.institutoptique.fr report NS dns1.institutoptique.fr dns2.institutoptique.fr.
    #7
  • !
    Glue differs from the zone
    Delegation · The addresses at the parent (glue) differ from the addresses in the zone: dns1.institutoptique.fr (glue 194.199.220.171, 2001:660:302d:4001::b:145, zone 2001:660:302d:4001::b:145); dns2.ioa.institutoptique.fr (glue 194.199.219.172, 2001:660:302d:8001::b:179, zone 194.199.219.172, 2001:660:302d:8001:0:dc:98:179). Update the glue at your registrar.
    #8
  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: dns1.ioa.institutoptique.fr: "9.4.2-P2"; dns2.institutoptique.fr: "9.4.2-P2"; dns2.ioa.institutoptique.fr: "9.4.2-P2". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · retry 1d should be shorter than refresh 1d. Current values: refresh 1d, retry 1d, expire 10d, negative TTL 1h.
    #23
  • !
    Not signed
    DNSSEC · The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.
    #27
  • !
    Very low TTLs
    Records · These records have a TTL below 5m, causing extra queries and slower lookups: MX (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 10d; resolvers may use either.
    #32

Recent checks

✗

Full report

Domain & DNS report for institutoptique.fr ›

Mail

warn

23 passed 5 warn 0 failed

Areas

✓SPF !DMARC !DKIM !DNSSEC !MX !TLS iBIMI

Problems

  • !
    Not enabled
    DNSSEC · DNSSEC is not enabled for this domain. Consider enabling DNSSEC to protect against DNS spoofing attacks.
    #8
  • !
    Single MX host, no backup
    MX · Only one MX record found. For better email reliability, consider adding at least one backup MX server.
    #12
  • !
    No aggregate reports (rua)
    DMARC · DMARC record has no rua tag, so you receive no aggregate reports about who sends mail as your domain. Add rua=mailto:...
    #19
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: selector1 (1024 bits), selector2 (1024 bits). Rotate to a 2048-bit key.
    #23
  • !
    Not configured
    TLS · MTA-STS is not configured, so other mail servers fall back to unencrypted delivery when TLS fails or is stripped by an attacker. Publish a _mta-sts TXT record and a policy at https://mta-sts.<domain>/.well-known/mta-sts.txt.
    #32

Recent checks

!

Full report

Mail report for institutoptique.fr ›