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nvab-online.nl

Checked 2026-10-22 15:01 UTC · first added 2026-10-21
!Check could not complete

Domain & DNS

error

18 passed 5 warn 1 failed 1 errors

lookups failed for rdap; results are incomplete

Areas

iRegistration !Delegation ✗Nameservers !SOA !DNSSEC !Records

Problems

  • ✗
    Zone transfer allowed
    Nameservers · These nameservers send the complete zone to anyone who asks (AXFR), exposing all host names: ns1.dehostingleverancier.nl (185.21.191.195): 63 records; ns1.dehostingleverancier.nl (2a02:348:a3:bfc3::1): 63 records; ns2.dehostingleverancier.nl (178.18.83.206): 63 records; ns2.dehostingleverancier.nl (2a02:348:56:53ce::1): 63 records. Restrict zone transfers to your secondary servers.
    #18
  • !
    NS sets differ
    Delegation · The nameservers at the parent and in the zone should be the same. Only at the parent: ns1.dehostingleverancier.nl, ns2.dehostingleverancier.nl; only in the zone: ns1.hosted-power.com, ns2.hosted-power.com. ns1.dehostingleverancier.nl, ns1.hosted-power.com, ns2.dehostingleverancier.nl, ns2.hosted-power.com report NS ns1.hosted-power.com ns2.hosted-power.com.
    #7
  • !
    Software version disclosed
    Nameservers · These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.dehostingleverancier.nl: "9.11.4-P2-RedHat-9.11.4-26.P2.el7_9.9"; ns2.dehostingleverancier.nl: "9.9.4-RedHat-9.9.4-61.el7_5.1"; ns2.hosted-power.com: "PowerDNS Authoritative Server 5.1.3 (built Jun 29 2026 17:44:43 by root@localhost)". Hide or replace the version string.
    #17
  • !
    Unusual SOA timers
    SOA · retry 1h should be shorter than refresh 1h. Current values: refresh 1h, retry 1h, expire 14d, negative TTL 30m.
    #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: A (1m), AAAA (1m), MX (1m), NS (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1h and in the zone 1m; resolvers may use either.
    #32

Recent checks

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Full report

Domain & DNS report for nvab-online.nl ›

Mail

warn

25 passed 4 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
  • !
    1024-bit DKIM key
    DKIM · 1024-bit RSA keys are the minimum and are considered weak today: k1 (1024 bits), selector1 (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

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Full report

Mail report for nvab-online.nl ›