Domain report: heilbronn.de

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

a.myradns.de, b.myradns.de, c.myradns.de

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: a.myradns.de, b.myradns.de, c.myradns.de
NS in the zone: a.myradns.de, b.myradns.de, c.myradns.de

Nameserver	Addresses	Network (AS)	Glue
a.myradns.de	185.5.81.1 2a02:cb40::1	AS20546 SOPRADO-ANY - SOPRADO GmbH, DE AS20546 SOPRADO-ANY - SOPRADO GmbH, DE	185.5.81.1 2a02:cb40::1
b.myradns.de	185.5.81.2 2a02:cb40:100::1	AS20546 SOPRADO-ANY - SOPRADO GmbH, DE AS20546 SOPRADO-ANY - SOPRADO GmbH, DE	185.5.81.2 2a02:cb40:100::1
c.myradns.de	91.236.122.129	AS20546 SOPRADO-ANY - SOPRADO GmbH, DE	91.236.122.129

Checks

✓ 3 nameservers #6

Delegated to a.myradns.de, b.myradns.de, c.myradns.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 2 IPv4 /24s and 2 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS20546 (SOPRADO-ANY - SOPRADO GmbH, DE): 5 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
i

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
i

Partly IPv6

These nameservers have no IPv6 address: c.myradns.de.

#13

Nameservers

info

5 of 5 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
a.myradns.de 185.5.81.1	NOERROR, 3 ms, authoritative	no	yes / yes	refused	myracloud
a.myradns.de 2a02:cb40::1	NOERROR, 3 ms, authoritative	no	yes / yes	refused	myracloud
b.myradns.de 185.5.81.2	NOERROR, 4 ms, authoritative	no	yes / yes	refused	myracloud
b.myradns.de 2a02:cb40:100::1	NOERROR, 4 ms, authoritative	no	yes / yes	refused	myracloud
c.myradns.de 91.236.122.129	NOERROR, 3 ms, authoritative	no	yes / yes	refused	myracloud

Checks

✓ All respond #14

All 5 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: a.myradns.de: "myracloud"; b.myradns.de: "myracloud"; c.myradns.de: "myracloud".

#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 2792498942 · primary a.myradns.de

Found

Primary (MNAME): a.myradns.de
Contact (RNAME): support.myrasecurity.com
Serial: 2792498942
Refresh / retry: 16384 s / 2048 s
Expire: 1048576 s
Negative TTL: 2560 s

Serial per nameserver

Nameserver	Serial
a.myradns.de (185.5.81.1)	2792498942
a.myradns.de (2a02:cb40::1)	2792498942
b.myradns.de (185.5.81.2)	2792498942
b.myradns.de (2a02:cb40:100::1)	2792498942
c.myradns.de (91.236.122.129)	2792498942

Checks

✓ Serial 2792498942 everywhere #22

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

SOA refresh 4h33m4s, retry 34m8s, expire 291h16m16s, negative TTL 42m40s.
✓ Primary is a public nameserver #24

The primary nameserver a.myradns.de is one of the listed nameservers.
✓ Contact support@myrasecurity.com #25

The SOA RNAME support.myrasecurity.com means support@myrasecurity.com.
✓ Timestamp serial #26

The serial 2792498942 is a Unix timestamp (2058-06-28 14:09 UTC).

DNSSEC

pass

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC3
NSEC3: 0 iterations, 0-byte salt
Signatures valid until: 21 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
34819	RSASHA256 (8)	SHA256 C4C09F8FBBE48876…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
34819	KSK (257)	RSASHA256 (8)
19986	ZSK (256)	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 34819 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-11-21 #30

The earliest DNSKEY/SOA signature expires at 2026-11-21 00:00 UTC.
✓ NSEC3 as recommended #31

The zone uses NSEC3 with 0 iterations and no salt (RFC 9276).

Records

pass

18 records at the apex

Found

Read from: 185.5.81.1:53

Type	Value	TTL
SOA	a.myradns.de. support.myrasecurity.com. 2792498942 16384 2048 1048576 2560	38400
NS	b.myradns.de.	38400
NS	a.myradns.de.	38400
NS	c.myradns.de.	38400
A	91.236.122.19	300
AAAA	2a02:cb40:200::1f4	300
MX	15 mail2.stadt-heilbronn.de.	300
MX	10 mail.stadt-heilbronn.de.	300
TXT	"cisco-ci-domain-verification=4c97438424c825ab0a23bb48dc7f89ea022f85dde7bcced50e99f996fc9d699a"	300
TXT	"a1ls7re29f81perng2k0f2fdog"	300
TXT	"apple-domain-verification=QfsJsvKtd5rspx8i"	300
TXT	"MS=2498AA08C63744C13A5A856D60D9E526B5B07883"	300
TXT	"swisssign-check=e0FKbPyKdnmYmv4KoX_RdrwmrnA"	300
TXT	"v=spf1 ip4:193.197.7.3 ip4:193.197.7.4 ip4:194.59.36.41 ip4:194.59.36.42 ip4:194.59.36.43 include:spf.protect.kvnbw.de include:_spf.psm.knowbe4.com include:_spf.belwue.de include:amazonses.com -all"	300
CAA	0 issue "letsencrypt.org"	300
CAA	0 issue "starfieldtech.com"	300
CAA	0 iodef "mailto:edv@heilbronn.de"	300
CAA	0 issue "digicert.com"	300

Checks

✓ TTLs within range #32

TTLs: A 5m, AAAA 5m, MX 5m, NS 640m. The NS TTL at the parent is 1d and in the zone 640m; resolvers may use either.
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
✓ No wildcard #34

Names that don't exist return NXDOMAIN.
✓ CAA restricts issuance #35

Certificates may be issued by: letsencrypt.org, starfieldtech.com, digicert.com.