materna.de

Checked 21 October 2026, 23:21 UTC · via 8.8.8.8
!Passed with warnings
21 passed 2 warnings 0 failed 6 info

Registration

info

.de country-code

Found

TLD
.de (country-code)
ICANN policies apply
no

Checks

  • i
    .de is a country-code TLD (ccTLD)
    Country-code TLD: governed by its local registry under national policy, not by an ICANN contract. Registrar accreditation, dispute resolution and RDAP/WHOIS rules are set by the registry.
    #1
  • ✓ TLD delegated and signed #2
    .de is delegated in the root zone and DNSSEC-signed.
  • i
    Registration data not available
    No registration data via RDAP: the registry of .de offers no RDAP service. Many ccTLD registries don't offer RDAP; check the registry's WHOIS instead.
    #3

Delegation

info

mcn-ext-dns-1.materna.de, mcn-ext-dns-2.materna.de, ns1.domaindiscount24.net, ns2.domaindiscount24.net, ns3.domaindiscount24.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
mcn-ext-dns-1.materna.de, mcn-ext-dns-2.materna.de, ns1.domaindiscount24.net, ns2.domaindiscount24.net, ns3.domaindiscount24.net
NS in the zone
mcn-ext-dns-1.materna.de, mcn-ext-dns-2.materna.de, ns1.domaindiscount24.net, ns2.domaindiscount24.net, ns3.domaindiscount24.net
NameserverAddressesNetwork (AS)Glue
mcn-ext-dns-1.materna.de139.2.4.86AS15486 MATERNA-AS - Materna Information & Communications SE, DE139.2.4.86
mcn-ext-dns-2.materna.de3.123.207.100AS16509 AMAZON-02 - Amazon.com, Inc., US3.123.207.100
ns1.domaindiscount24.net193.227.117.34 2a04:2b00:14cc::34AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
ns2.domaindiscount24.net194.50.187.34 2a04:2b00:14dd::34AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
ns3.domaindiscount24.net194.0.182.34 2a04:2b00:14ee::34AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-

Checks

  • ✓ 5 nameservers #6
    Delegated to mcn-ext-dns-1.materna.de, mcn-ext-dns-2.materna.de, ns1.domaindiscount24.net, ns2.domaindiscount24.net, ns3.domaindiscount24.net.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: mcn-ext-dns-1.materna.de, mcn-ext-dns-2.materna.de.
  • ✓ 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 5 IPv4 /24s and 3 IPv6 /48s.
  • ✓ 3 autonomous systems #11
    The nameservers are spread over: AS15486 (MATERNA-AS - Materna Information & Communications SE, DE): 1 address; AS16509 (AMAZON-02 - Amazon.com, Inc., US): 1 address; AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 6 addresses.
  • ✓ Nameserver names under 2 TLDs #12
    Nameserver names use the TLDs .de, .net.
  • i
    Partly IPv6
    These nameservers have no IPv6 address: mcn-ext-dns-1.materna.de, mcn-ext-dns-2.materna.de.
    #13

Nameservers

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
mcn-ext-dns-1.materna.de 139.2.4.86NOERROR, 11 ms, authoritativenoyes / yesrefusedDNSServer
mcn-ext-dns-2.materna.de 3.123.207.100NOERROR, 4 ms, authoritativenoyes / yesrefusedDNSServer
ns1.domaindiscount24.net 193.227.117.34NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns1.domaindiscount24.net 2a04:2b00:14cc::34NOERROR, 5 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns2.domaindiscount24.net 194.50.187.34NOERROR, 13 ms, authoritativenoyes / yesrefusedreg-wie1
ns2.domaindiscount24.net 2a04:2b00:14dd::34NOERROR, 13 ms, authoritativenoyes / yesrefusedreg-wie1
ns3.domaindiscount24.net 194.0.182.34NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns3.domaindiscount24.net 2a04:2b00:14ee::34NOERROR, 5 ms, authoritativenoyes / yesrefusedRcodeZero DNS

Checks

  • ✓ All respond #14
    All 8 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: mcn-ext-dns-1.materna.de: "DNSServer"; mcn-ext-dns-2.materna.de: "DNSServer"; ns1.domaindiscount24.net: "RcodeZero DNS"; ns2.domaindiscount24.net: "reg-wie1"; ns3.domaindiscount24.net: "RcodeZero DNS".
    #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.

SOA

warn

serial 2026092603 · primary mcn-ext-dns-master.materna.group

Found

Primary (MNAME)
mcn-ext-dns-master.materna.group
Contact (RNAME)
hostmaster.materna.de
Serial
2026092603
Refresh / retry
3600 s / 7200 s
Expire
2592000 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
mcn-ext-dns-1.materna.de (139.2.4.86)2026092603
mcn-ext-dns-2.materna.de (3.123.207.100)2026092603
ns1.domaindiscount24.net (193.227.117.34)2026092603
ns1.domaindiscount24.net (2a04:2b00:14cc::34)2026092603
ns2.domaindiscount24.net (194.50.187.34)2026092603
ns2.domaindiscount24.net (2a04:2b00:14dd::34)2026092603
ns3.domaindiscount24.net (194.0.182.34)2026092603
ns3.domaindiscount24.net (2a04:2b00:14ee::34)2026092603

Checks

  • ✓ Serial 2026092603 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    retry 2h should be shorter than refresh 1h. Current values: refresh 1h, retry 2h, expire 30d, negative TTL 1h.
    #23
  • i
    Hidden master
    The primary nameserver mcn-ext-dns-master.materna.group is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.
    #24
  • ✓ Contact hostmaster@materna.de #25
    The SOA RNAME hostmaster.materna.de means hostmaster@materna.de.
  • ✓ Date-based serial #26
    The serial 2026092603 follows the YYYYMMDDnn convention (2026-09-26).

DNSSEC

warn

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

Records

info

18 records at the apex

Found

Read from
139.2.4.86:53
TypeValueTTL
SOAmcn-ext-dns-master.materna.group. hostmaster.materna.de. 2026092603 3600 7200 2592000 360086400
NSns1.domaindiscount24.net.86400
NSmcn-ext-dns-2.materna.de.86400
NSns2.domaindiscount24.net.86400
NSns3.domaindiscount24.net.86400
NSmcn-ext-dns-1.materna.de.86400
A37.131.238.24286400
MX0 materna-de.mail.protection.outlook.com.86400
TXT"miro-verification=119f1f1a77874ba2daeb3d65f3feaa8b0615118a"600
TXT"7462bb967415901dfe952deb5e5efb03"600
TXT"s5yNoW3AoLhOHzDUuoZXY7rn7/MTOn7938INB1LbsckSGQN3IK4SgJRFyFghpeaQLm3xAYh2jvYRHw/qLEGWLA=="600
TXT"v=spf1 ip4:139.2.4.91/32 ip4:139.2.4.85/32 ip4:139.2.4.195/32 include:spf.protection.outlook.com ip4:139.2.207.13 -all"600
TXT"apple-domain-verification=y3PyqkYCzDcrgPCe"600
TXT"have-i-been-pwned-verification=b040a99ceb07d73181c64b37f318ffe4"600
TXT"gradle-verification=I277BBOG00HO3RUSTPQPEQRVFEQKE"600
TXT"google-site-verification=QhCDk-ouyfxRr8TpyQ9w1NKx9Y9XQXA-l3Ck1PMoolU"600
TXT"MS=ms84055970"600
TXT"google-site-verification=BcOfDPrG2IDVfKsFldqshokez-FCwe5NDiUncJIOmCc"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1d, MX 1d, NS 1d.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • i
    No CAA records
    Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.
    #35