Domain report: aponet.de

Registration

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.de country-code

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.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.
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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

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pns.dtag.de, secondary004.dtag.net

Nameserver	Addresses	Network (AS)	Glue
pns.dtag.de	194.25.0.125 2003:40:8000::100	AS3320 DTAG - Deutsche Telekom AG, DE AS3320 DTAG - Deutsche Telekom AG, DE	194.25.0.125 2003:40:8000::100
secondary004.dtag.net	195.244.245.27 2a00:fa8:3:0:100:0:4:1	AS5605 NETUSE - NetUSE AG, DE AS5605 NETUSE - NetUSE AG, DE	-

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2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: pns.dtag.de, secondary004.dtag.net.

#6
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
✓ 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 2 IPv4 /24s and 2 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS3320 (DTAG - Deutsche Telekom AG, DE): 2 addresses; AS5605 (NETUSE - NetUSE AG, DE): 2 addresses.
✓ Nameserver names under 2 TLDs #12

Nameserver names use the TLDs .de, .net.
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

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4 of 4 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
pns.dtag.de 194.25.0.125	NOERROR, 9 ms, authoritative	no	yes / yes	refused	DomainNameServer
pns.dtag.de 2003:40:8000::100	NOERROR, 7 ms, authoritative	no	yes / yes	refused	DomainNameServer
secondary004.dtag.net 195.244.245.27	NOERROR, 13 ms, authoritative	no	yes / yes	refused	DomainNameServer
secondary004.dtag.net 2a00:fa8:3:0:100:0:4:1	NOERROR, 17 ms, authoritative	no	yes / yes	refused	DomainNameServer

✓ All respond #14

All 4 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.
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Identifying string disclosed

These nameservers answer version queries with a string that is not a version number: pns.dtag.de: "DomainNameServer"; secondary004.dtag.net: "DomainNameServer".

#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.

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serial 2026081701 · primary dns.dgn.de

✓ Serial 2026081701 everywhere #22

All nameservers serve the same version of the zone.
✓ Timers within recommendations #23

SOA refresh 8h, retry 2h, expire 7d, negative TTL 5m.
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Hidden master

The primary nameserver dns.dgn.de 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@dgn.de #25

The SOA RNAME hostmaster.dgn.de means hostmaster@dgn.de.
✓ Date-based serial #26

The serial 2026081701 follows the YYYYMMDDnn convention (2026-08-17).

warn

Not signed

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9 records at the apex