nea.fr

dns1.name-s.net, dns4.mtgsy.com, ns-celeste.oecd-nea.org, ns-renater.oecd-nea.org

Found

Parent zone

fr

Delegation from

d.nic.fr (194.0.9.1)

NS at the parent

dns1.name-s.net, dns4.mtgsy.com, ns-celeste.oecd-nea.org, ns-renater.oecd-nea.org

NS in the zone

ns-celeste.oecd-nea.org, ns-renater.oecd-nea.org

Checks

• ✓ 4 nameservers #6

  Delegated to dns1.name-s.net, dns4.mtgsy.com, ns-celeste.oecd-nea.org, ns-renater.oecd-nea.org.
• !

  NS sets differ

  The nameservers at the parent and in the zone should be the same. Only at the parent: dns1.name-s.net, dns4.mtgsy.com. dns1.name-s.net, dns4.mtgsy.com, ns-celeste.oecd-nea.org, ns-renater.oecd-nea.org report NS ns-celeste.oecd-nea.org ns-renater.oecd-nea.org.

  #7
• ✓ No glue needed #8

  All nameservers are outside the zone, so no glue records are needed.
• ✓ All names resolve #9

  Every nameserver name has an address and is not an alias.
• ✓ Nameservers in different networks #10

  The nameservers are spread over 4 IPv4 /24s and 2 IPv6 /48s.
• ✓ 3 autonomous systems #11

  The nameservers are spread over: AS2200 (FR-RENATER - Renater, FR): 1 address; AS34177 (CELESTE-AS - Celeste SAS, FR): 1 address; AS63949 (AKAMAI-LINODE-AP - Akamai Connected Cloud, SG): 4 addresses.
• ✓ Nameserver names under 3 TLDs #12

  Nameserver names use the TLDs .com, .net, .org.
• i

  Partly IPv6

  These nameservers have no IPv6 address: ns-celeste.oecd-nea.org, ns-renater.oecd-nea.org.

  #13

6 of 6 addresses answer authoritatively

Found

Checks

• ✓ All respond #14

  All 6 nameserver addresses answered.
• ✓ All authoritative #15

  Every responding nameserver answers authoritatively for the zone.
• ✓ No recursion #16

  The nameservers do not answer recursive queries for other domains.
• !

  Software version disclosed

  These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: dns1.name-s.net: "cfdns-v1.92.1"; dns4.mtgsy.com: "cfdns-v1.92.1". Hide or replace the version string.

  #17
• ✓ Zone transfers refused #18

  No nameserver allows a zone transfer to the public.
• ✓ TCP supported #19

  All nameservers answer over TCP.
• ✓ EDNS supported #20

  All nameservers support EDNS(0).
• ✓ Public addresses #21

  All nameserver addresses are publicly routable.

serial 2021112605 · primary ns-renater.oecd-nea.org

Found

Primary (MNAME)

ns-renater.oecd-nea.org

Contact (RNAME)

hostmaster

Serial

2021112605

Refresh / retry

3600 s / 1200 s

Expire

1209600 s

Negative TTL

3600 s

Serial per nameserver

Checks

• !

  Serials differ

  The nameservers serve different versions of the zone: 2021112605 on dns1.name-s.net (172.105.69.234), dns1.name-s.net (2a01:7e01::f03c:92ff:fee5:5890), dns4.mtgsy.com (178.79.133.227), dns4.mtgsy.com (2a01:7e00::f03c:92ff:fee5:1daf); 2025111706 on ns-celeste.oecd-nea.org (159.180.243.207), ns-renater.oecd-nea.org (193.51.64.83). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.

  #22
• ✓ Timers within recommendations #23

  SOA refresh 1h, retry 20m, expire 14d, negative TTL 1h.
• ✓ Primary is a public nameserver #24

  The primary nameserver ns-renater.oecd-nea.org is one of the listed nameservers.
• !

  Invalid contact address

  The SOA RNAME "hostmaster" is not a valid mailbox (expected e.g. hostmaster.example.com).

  #25
• ✓ Date-based serial #26

  The serial 2021112605 follows the YYYYMMDDnn convention (2021-11-26).

Not signed

Found

Validated by resolver

no

Checks

• !

  Not signed

  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