Domain report: guestoo.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

pass

ns1.codepiraten.com, ns1.first-ns.de, ns2.codepiraten.com, robotns2.second-ns.de, robotns3.second-ns.com

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: ns1.codepiraten.com, ns1.first-ns.de, ns2.codepiraten.com, robotns2.second-ns.de, robotns3.second-ns.com
NS in the zone: ns1.codepiraten.com, ns1.first-ns.de, ns2.codepiraten.com, robotns2.second-ns.de, robotns3.second-ns.com

Nameserver	Addresses	Network (AS)	Glue
ns1.codepiraten.com	62.83.42.80 2a0a:4cc0:60:3bb2::53	AS197540 netcup-AS - netcup GmbH, DE AS197540 netcup-AS - netcup GmbH, DE	-
ns1.first-ns.de	213.239.242.238 2a01:4f8:0:a101::a:1	AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE	-
ns2.codepiraten.com	159.195.126.176 2a03:4000:a:1e5b::53	AS197540 netcup-AS - netcup GmbH, DE AS197540 netcup-AS - netcup GmbH, DE	-
robotns2.second-ns.de	213.133.100.103 2a01:4f8:0:1::5ddc:2	AS24940 HETZNER-AS - Hetzner Online GmbH, DE AS24940 HETZNER-AS - Hetzner Online GmbH, DE	-
robotns3.second-ns.com	193.47.99.3 2001:67c:192c::add:a3	AS12337 NORIS-NETWORK - noris network AG, DE AS12337 NORIS-NETWORK - noris network AG, DE	-

Checks

✓ 5 nameservers #6

Delegated to ns1.codepiraten.com, ns1.first-ns.de, ns2.codepiraten.com, robotns2.second-ns.de, robotns3.second-ns.com.
✓ 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 5 IPv4 /24s and 4 IPv6 /48s.
✓ 3 autonomous systems #11

The nameservers are spread over: AS12337 (NORIS-NETWORK - noris network AG, DE): 2 addresses; AS197540 (netcup-AS - netcup GmbH, DE): 4 addresses; AS24940 (HETZNER-AS - Hetzner Online GmbH, DE): 4 addresses.
✓ Nameserver names under 2 TLDs #12

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

Every nameserver has an IPv6 address.

Nameservers

warn

10 of 10 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.codepiraten.com 62.83.42.80	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns1.codepiraten.com 2a0a:4cc0:60:3bb2::53	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns1.first-ns.de 213.239.242.238	NOERROR, 5 ms, authoritative	no	yes / yes	refused	-
ns1.first-ns.de 2a01:4f8:0:a101::a:1	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-
ns2.codepiraten.com 159.195.126.176	NOERROR, 0 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 5.0.2
ns2.codepiraten.com 2a03:4000:a:1e5b::53	NOERROR, 1 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 5.0.2
robotns2.second-ns.de 213.133.100.103	NOERROR, 3 ms, authoritative	no	yes / yes	refused	-
robotns2.second-ns.de 2a01:4f8:0:1::5ddc:2	NOERROR, 3 ms, authoritative	no	yes / yes	refused	-
robotns3.second-ns.com 193.47.99.3	NOERROR, 5 ms, authoritative	no	yes / yes	refused	-
robotns3.second-ns.com 2001:67c:192c::add:a3	NOERROR, 8 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 10 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: ns2.codepiraten.com: "PowerDNS Authoritative Server 5.0.2". 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

warn

serial 2026101501 · primary ns1.codepiraten.com

Found

Primary (MNAME): ns1.codepiraten.com
Contact (RNAME): hostmaster.codepiraten.com
Serial: 2026101501
Refresh / retry: 3600 s / 3600 s
Expire: 2592000 s
Negative TTL: 3600 s

Serial per nameserver

Nameserver	Serial
ns1.codepiraten.com (62.83.42.80)	2026101501
ns1.codepiraten.com (2a0a:4cc0:60:3bb2::53)	2026101501
ns1.first-ns.de (213.239.242.238)	2026101501
ns1.first-ns.de (2a01:4f8:0:a101::a:1)	2026101501
ns2.codepiraten.com (159.195.126.176)	2026101501
ns2.codepiraten.com (2a03:4000:a:1e5b::53)	2026101501
robotns2.second-ns.de (213.133.100.103)	2026101501
robotns2.second-ns.de (2a01:4f8:0:1::5ddc:2)	2026101501
robotns3.second-ns.com (193.47.99.3)	2026101501
robotns3.second-ns.com (2001:67c:192c::add:a3)	2026101501

Checks

✓ Serial 2026101501 everywhere #22

All nameservers serve the same version of the zone.
!

Unusual SOA timers

retry 1h should be shorter than refresh 1h. Current values: refresh 1h, retry 1h, expire 30d, negative TTL 1h.

#23
✓ Primary is a public nameserver #24

The primary nameserver ns1.codepiraten.com is one of the listed nameservers.
✓ Contact hostmaster@codepiraten.com #25

The SOA RNAME hostmaster.codepiraten.com means hostmaster@codepiraten.com.
✓ Date-based serial #26

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

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC
Signatures valid until: 29 October 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
35922	ECDSAP256SHA256 (13)	SHA256 4FAB286566E89492…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
35922	KSK (257)	ECDSAP256SHA256 (13)

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 35922 (SHA256).
✓ Modern algorithms #29

Key algorithms: ECDSAP256SHA256 (13).
✓ Signatures valid until 2026-10-29 #30

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

NSEC

The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.

#31

Records

info

16 records at the apex

Found

Read from: 62.83.42.80:53

Type	Value	TTL
SOA	ns1.codepiraten.com. hostmaster.codepiraten.com. 2026101501 3600 3600 2592000 3600	300
NS	robotns2.second-ns.de.	300
NS	robotns3.second-ns.com.	300
NS	ns1.codepiraten.com.	300
NS	ns1.first-ns.de.	300
NS	ns2.codepiraten.com.	300
A	195.201.220.253	300
AAAA	2a01:4f8:1c1c:2508::4	300
MX	10 mailit.app.	300
TXT	"google-site-verification=Qoh6zIao88fW7Mue4BAzMi-xxJGS3FOHpvN8__QeT2Y"	300
TXT	"google-site-verification=Z--uMM4Alsi-iSNMU3cxjh9yzzlSTXodYKJUQ78EOtM"	300
TXT	"v=spf1 include:spf.codepiraten.com -all"	300
TXT	"brevo-code:d1adbbee2c7dee00e42fdd3314c35bf2"	300
CAA	0 iodef "mailto:hostmaster@codepiraten.com"	3600
CAA	0 issuewild ";"	3600
CAA	0 issue "letsencrypt.org"	3600

Checks

✓ TTLs within range #32

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

The zone apex has no CNAME record.
i

Wildcard record

A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.

#34
✓ CAA restricts issuance #35

Certificates may be issued by: none (issuance forbidden), letsencrypt.org.