Domain report: sachsen.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

pns.dtag.de, s2vg300ns02.pzd-svn.de, s2vg300ns03.pzd-svn.de, secondary006.dtag.net

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: pns.dtag.de, s2vg300ns02.pzd-svn.de, s2vg300ns03.pzd-svn.de, secondary006.dtag.net
NS in the zone: pns.dtag.de, s2vg300ns02.pzd-svn.de, s2vg300ns03.pzd-svn.de, secondary006.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
s2vg300ns02.pzd-svn.de	31.12.60.11 2a02:101c:1800:1300::11	AS61352 Sub-LIR-SN-AS - Staatsbetrieb Saechsische Informatik Dienste, DE AS61352 Sub-LIR-SN-AS - Staatsbetrieb Saechsische Informatik Dienste, DE	31.12.60.11 2a02:101c:1800:1300::11
s2vg300ns03.pzd-svn.de	31.12.60.12 2a02:101c:1800:1300::12	AS61352 Sub-LIR-SN-AS - Staatsbetrieb Saechsische Informatik Dienste, DE AS61352 Sub-LIR-SN-AS - Staatsbetrieb Saechsische Informatik Dienste, DE	31.12.60.12 2a02:101c:1800:1300::12
secondary006.dtag.net	195.244.245.25 2a00:fa8:3:0:100:0:6:1	AS5605 NETUSE - NetUSE AG, DE AS5605 NETUSE - NetUSE AG, DE	-

Checks

✓ 4 nameservers #6

Delegated to pns.dtag.de, s2vg300ns02.pzd-svn.de, s2vg300ns03.pzd-svn.de, secondary006.dtag.net.
✓ 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 3 IPv6 /48s.
✓ 3 autonomous systems #11

The nameservers are spread over: AS3320 (DTAG - Deutsche Telekom AG, DE): 2 addresses; AS5605 (NETUSE - NetUSE AG, DE): 2 addresses; AS61352 (Sub-LIR-SN-AS - Staatsbetrieb Saechsische Informatik Dienste, DE): 4 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.

Nameservers

info

8 of 8 addresses answer authoritatively

Found

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, 6 ms, authoritative	no	yes / yes	refused	DomainNameServer
s2vg300ns02.pzd-svn.de 31.12.60.11	NOERROR, 10 ms, authoritative	no	yes / yes	refused	Unknown
s2vg300ns02.pzd-svn.de 2a02:101c:1800:1300::11	NOERROR, 10 ms, authoritative	no	yes / yes	refused	Unknown
s2vg300ns03.pzd-svn.de 31.12.60.12	NOERROR, 7 ms, authoritative	no	yes / yes	refused	Unknown
s2vg300ns03.pzd-svn.de 2a02:101c:1800:1300::12	NOERROR, 9 ms, authoritative	no	yes / yes	refused	Unknown
secondary006.dtag.net 195.244.245.25	NOERROR, 12 ms, authoritative	no	yes / yes	refused	DomainNameServer
secondary006.dtag.net 2a00:fa8:3:0:100:0:6:1	NOERROR, 17 ms, authoritative	no	yes / yes	refused	DomainNameServer

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: pns.dtag.de: "DomainNameServer"; s2vg300ns02.pzd-svn.de: "Unknown"; s2vg300ns03.pzd-svn.de: "Unknown"; secondary006.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.

SOA

warn

serial 2026102570 · primary ns.pzd-svn.de

Found

Primary (MNAME): ns.pzd-svn.de
Contact (RNAME): admin.pzd-svn.de
Serial: 2026102570
Refresh / retry: 10800 s / 3600 s
Expire: 1209600 s
Negative TTL: 86400 s

Serial per nameserver

Nameserver	Serial
pns.dtag.de (194.25.0.125)	2026102570
pns.dtag.de (2003:40:8000::100)	2026102570
s2vg300ns02.pzd-svn.de (31.12.60.11)	2026102570
s2vg300ns02.pzd-svn.de (2a02:101c:1800:1300::11)	2026102570
s2vg300ns03.pzd-svn.de (31.12.60.12)	2026102570
s2vg300ns03.pzd-svn.de (2a02:101c:1800:1300::12)	2026102570
secondary006.dtag.net (195.244.245.25)	2026102570
secondary006.dtag.net (2a00:fa8:3:0:100:0:6:1)	2026102570

Checks

✓ Serial 2026102570 everywhere #22

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

SOA refresh 3h, retry 1h, expire 14d, negative TTL 1d.
i

Hidden master

The primary nameserver ns.pzd-svn.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 admin@pzd-svn.de #25

The SOA RNAME admin.pzd-svn.de means admin@pzd-svn.de.
!

Serial date in the future

The serial 2026102570 looks like a date (YYYYMMDDnn) in the future (2026-10-25). It can only grow, so a wrong date can't be undone without a serial wrap-around.

#26

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC
Signatures valid until: 3 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
22736	RSASHA256 (8)	SHA256 CFA7A8ACFEB0B14E…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
22736	KSK (257)	RSASHA256 (8)
23925	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 22736 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-11-03 #30

The earliest DNSKEY/SOA signature expires at 2026-11-03 16:12 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

18 records at the apex

Found

Read from: 194.25.0.125:53

Type	Value	TTL
SOA	ns.pzd-svn.de. admin.pzd-svn.de. 2026102570 10800 3600 1209600 86400	3600
NS	pns.dtag.de.	3600
NS	secondary006.dtag.net.	3600
NS	S2VG300NS03.pzd-svn.de.	3600
NS	S2VG300NS02.pzd-svn.de.	3600
A	31.12.58.19	3600
AAAA	2a02:101c:1800:1306::196	3600
MX	20 s2vg300mr02.pzd-svn.de.	3600
MX	20 s2vg300mr01.pzd-svn.de.	3600
TXT	"swisssign-check=FBmo5ynA7atuutSW0Qz9ZRibrWM"	3600
TXT	"v=spf1 include:pzd-svn.de -all"	3600
TXT	"_telesec-domain-validation=5938DC2F7CDBABA84996137E6C1C5291D8B59542F82148E8EB973EBC899A2D81"	3600
TXT	"cisco-ci-domain-verification=2d704a891f2fd05972ef8138fb334de8d0f4bdf38fd8c594f3a29fde09acc393"	3600
TXT	"swisssign-check=03JNaK96vvkH-qLFODTLJK3r5XY"	3600
TXT	"swisssign-check=trJygSuZgC1UOvdu6j2--hBIRWo"	3600
TXT	"swisssign-check=p6Sdoby7oFZ1HQC_KmB_a1dBLn0"	3600
TXT	"swisssign-check=EZDhejfHtp-8kkSlQkKxl5Y2ALc"	3600
TXT	"swisssign-check=D7_rroa4CGBEteOCDHKsCVfzsg8"	3600

Checks

✓ TTLs within range #32

TTLs: A 1h, AAAA 1h, MX 1h, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; 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.
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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