Domain report: bad-nauheim.de

Registration

info

.de country-code

Found

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

Checks

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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

Delegation

info

ns1.kgrz-ks.de, ns2.ekom21.de, ns3.ekom21.de, ns4.ekom21.de, pdns.kiv-host.de

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: ns1.kgrz-ks.de, ns2.ekom21.de, ns3.ekom21.de, ns4.ekom21.de, pdns.kiv-host.de
NS in the zone: ns1.kgrz-ks.de, ns2.ekom21.de, ns3.ekom21.de, ns4.ekom21.de, pdns.kiv-host.de

Nameserver	Addresses	Network (AS)	Glue
ns1.kgrz-ks.de	80.69.206.40	AS20810 Netcom-Kassel - Netcom Kassel Gesellschaft fuer Telekommunikation mbH, DE	80.69.206.40
ns2.ekom21.de	62.156.249.2	AS3320 DTAG - Deutsche Telekom AG, DE	62.156.249.2
ns3.ekom21.de	62.156.249.3	AS3320 DTAG - Deutsche Telekom AG, DE	62.156.249.3
ns4.ekom21.de	195.226.81.133	AS9197 BECOMGMBH-AS - becom Systemhaus Verwaltungs-GmbH, DE	195.226.81.133
pdns.kiv-host.de	195.226.81.132 2a02:1010:c210:28::13	AS9197 BECOMGMBH-AS - becom Systemhaus Verwaltungs-GmbH, DE AS9197 BECOMGMBH-AS - becom Systemhaus Verwaltungs-GmbH, DE	195.226.81.132 2a02:1010:c210:28::13

Checks

✓ 5 nameservers #6

Delegated to ns1.kgrz-ks.de, ns2.ekom21.de, ns3.ekom21.de, ns4.ekom21.de, pdns.kiv-host.de.
✓ 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 3 IPv4 /24s and 1 IPv6 /48.
✓ 3 autonomous systems #11

The nameservers are spread over: AS20810 (Netcom-Kassel - Netcom Kassel Gesellschaft fuer Telekommunikation mbH, DE): 1 address; AS3320 (DTAG - Deutsche Telekom AG, DE): 2 addresses; AS9197 (BECOMGMBH-AS - becom Systemhaus Verwaltungs-GmbH, DE): 3 addresses.
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All nameserver names under .de

All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.

#12
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Partly IPv6

These nameservers have no IPv6 address: ns1.kgrz-ks.de, ns2.ekom21.de, ns3.ekom21.de, ns4.ekom21.de.

#13

Nameservers

warn

6 of 6 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.kgrz-ks.de 80.69.206.40	NOERROR, 6 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.8.0
ns2.ekom21.de 62.156.249.2	NOERROR, 11 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.8.0
ns3.ekom21.de 62.156.249.3	NOERROR, 10 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.8.0
ns4.ekom21.de 195.226.81.133	NOERROR, 9 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.8.0
pdns.kiv-host.de 195.226.81.132	NOERROR, 8 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.8.0
pdns.kiv-host.de 2a02:1010:c210:28::13	NOERROR, 9 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.8.0

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: ns1.kgrz-ks.de: "PowerDNS Authoritative Server 4.8.0"; ns2.ekom21.de: "PowerDNS Authoritative Server 4.8.0"; ns3.ekom21.de: "PowerDNS Authoritative Server 4.8.0"; ns4.ekom21.de: "PowerDNS Authoritative Server 4.8.0"; pdns.kiv-host.de: "PowerDNS Authoritative Server 4.8.0". 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.

SOA

pass

serial 2026101501 · primary pdns.kiv-host.de

Found

Primary (MNAME): pdns.kiv-host.de
Contact (RNAME): hostmaster.ekom21.de
Serial: 2026101501
Refresh / retry: 86400 s / 3600 s
Expire: 3600000 s
Negative TTL: 300 s

Serial per nameserver

Nameserver	Serial
ns1.kgrz-ks.de (80.69.206.40)	2026101501
ns2.ekom21.de (62.156.249.2)	2026101501
ns3.ekom21.de (62.156.249.3)	2026101501
ns4.ekom21.de (195.226.81.133)	2026101501
pdns.kiv-host.de (195.226.81.132)	2026101501
pdns.kiv-host.de (2a02:1010:c210:28::13)	2026101501

Checks

✓ Serial 2026101501 everywhere #22

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

SOA refresh 1d, retry 1h, expire 1000h, negative TTL 5m.
✓ Primary is a public nameserver #24

The primary nameserver pdns.kiv-host.de is one of the listed nameservers.
✓ Contact hostmaster@ekom21.de #25

The SOA RNAME hostmaster.ekom21.de means hostmaster@ekom21.de.
✓ Date-based serial #26

The serial 2026101501 follows the YYYYMMDDnn convention (2026-10-15).

DNSSEC

warn

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 10 iterations, 5-byte salt
Signatures valid until: 29 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
53464	RSASHA256 (8)	SHA256 A390790688BF0995…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
51393	ZSK (256)	RSASHA256 (8)
53464	KSK (257)	RSASHA256 (8)

Checks

✓ Signed and validated #27

The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
✓ DS matches a key #28

The DS record at the parent matches a key in the zone: key tag 53464 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-10-29 #30

The earliest DNSKEY/SOA signature expires at 2026-10-29 00:00 UTC.
!

NSEC3 with extra iterations or salt

NSEC3 uses 10 iterations and a 5-byte salt. RFC 9276 recommends 0 iterations and no salt: extra iterations cost resolvers CPU and add no real protection, and some validators treat high counts as insecure.

#31

Records

info

15 records at the apex

Found

Read from: 80.69.206.40:53

Type	Value	TTL
SOA	pdns.kiv-host.de. hostmaster.ekom21.de. 2026101501 86400 3600 3600000 300	3600
NS	ns4.ekom21.de.	86400
NS	pdns.kiv-host.de.	86400
NS	ns2.ekom21.de.	86400
NS	ns1.kgrz-ks.de.	86400
NS	ns3.ekom21.de.	86400
A	93.89.5.141	300
MX	10 mx3skas.kgrz-ks.de.	300
MX	10 mx4skas.kgrz-ks.de.	300
MX	10 mx5skas.kgrz-ks.de.	300
MX	10 mx3sgie.ekom21.de.	300
TXT	"v=spf1 include:_spf1.ekom21.de include:_spf.nol-is.de +ip4:185.35.218.72/32 +ip4:185.35.218.66/32 +ip4:217.91.222.36/32 +ip4:85.236.55.225/32 +ip4:85.236.55.254/32 +a:mail.inworks.de -all"	300
TXT	"MS=ms32490843"	300
TXT	"swisssign-check=mXuS_e42W-XZ5F9KX1LktpDoIok"	300
TXT	"apple-domain-verification=9XLIXd394EIdQ0ZA"	300

Checks

✓ TTLs within range #32

TTLs: A 5m, MX 5m, 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.
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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