Domain report: staufenbiel.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

a.nic.de, f.nic.de, l.de.net, n.de.net, s.de.net, z.nic.de

Found

Parent zone: .
Delegation from: a.root-servers.net (198.41.0.4)
NS at the parent: a.nic.de, f.nic.de, l.de.net, n.de.net, s.de.net, z.nic.de
NS in the zone: a.nic.de, f.nic.de, l.de.net, n.de.net, s.de.net, z.nic.de

Nameserver	Addresses	Network (AS)	Glue
a.nic.de	194.0.0.53 2001:678:2::53	AS31529 DENIC-ANYCAST-AS - DENIC eG, DE AS31529 DENIC-ANYCAST-AS - DENIC eG, DE	194.0.0.53 2001:678:2::53
f.nic.de	81.91.164.5 2a02:568:0:2::53	AS31529 DENIC-ANYCAST-AS - DENIC eG, DE AS31529 DENIC-ANYCAST-AS - DENIC eG, DE	81.91.164.5 2a02:568:0:2::53
l.de.net	77.67.63.105 2001:668:1f:11::105	AS3257 GTT-BACKBONE - GTT Communications Inc., US AS3257 GTT-BACKBONE - GTT Communications Inc., US	77.67.63.105 2001:668:1f:11::105
n.de.net	194.146.107.6 2001:67c:1011:1::53	AS8674 NETNOD-IX - Netnod AB, SE AS8674 NETNOD-IX - Netnod AB, SE	194.146.107.6 2001:67c:1011:1::53
s.de.net	195.243.137.26 2003:8:14::53	AS3320 DTAG - Deutsche Telekom AG, DE AS3320 DTAG - Deutsche Telekom AG, DE	195.243.137.26 2003:8:14::53
z.nic.de	194.246.96.1 2a02:568:fe02::de	AS31529 DENIC-ANYCAST-AS - DENIC eG, DE AS31529 DENIC-ANYCAST-AS - DENIC eG, DE	194.246.96.1 2a02:568:fe02::de

Checks

✓ 6 nameservers #6

Delegated to a.nic.de, f.nic.de, l.de.net, n.de.net, s.de.net, z.nic.de.
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
✓ Glue present and correct #8

Glue is published for the nameservers inside the zone: a.nic.de, f.nic.de, z.nic.de.
✓ 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 6 IPv4 /24s and 6 IPv6 /48s.
✓ 4 autonomous systems #11

The nameservers are spread over: AS31529 (DENIC-ANYCAST-AS - DENIC eG, DE): 6 addresses; AS3257 (GTT-BACKBONE - GTT Communications Inc., US): 2 addresses; AS3320 (DTAG - Deutsche Telekom AG, DE): 2 addresses; AS8674 (NETNOD-IX - Netnod AB, SE): 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.

Nameservers

info

12 of 12 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
a.nic.de 194.0.0.53	NOERROR, 13 ms, authoritative	no	yes / yes	refused	ns.de.fr3.bind
a.nic.de 2001:678:2::53	NOERROR, 17 ms, authoritative	no	yes / yes	refused	ns.de.fr3.bind
f.nic.de 81.91.164.5	NOERROR, 4 ms, authoritative	no	yes / yes	refused	ns-1.de.de1.knot
f.nic.de 2a02:568:0:2::53	NOERROR, 8 ms, authoritative	no	yes / yes	refused	ns-2.de.de1.knot
l.de.net 77.67.63.105	NOERROR, 15 ms, authoritative	no	yes / yes	refused	ns-2.de.fr1.knot
l.de.net 2001:668:1f:11::105	NOERROR, 18 ms, authoritative	no	yes / yes	refused	ns-1.de.fr1.knot
n.de.net 194.146.107.6	NOERROR, 3 ms, authoritative	no	yes / yes	refused	-
n.de.net 2001:67c:1011:1::53	NOERROR, 8 ms, authoritative	no	yes / yes	refused	-
s.de.net 195.243.137.26	NOERROR, 7 ms, authoritative	no	yes / yes	refused	ns-2.de.de10.knot
s.de.net 2003:8:14::53	NOERROR, 7 ms, authoritative	no	yes / yes	refused	ns-1.de.de10.knot
z.nic.de 194.246.96.1	NOERROR, 3 ms, authoritative	no	yes / yes	refused	ns-1.de.de2.knot
z.nic.de 2a02:568:fe02::de	NOERROR, 7 ms, authoritative	no	yes / yes	refused	ns-2.de.de2.knot

Checks

✓ All respond #14

All 12 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.nic.de: "ns.de.fr3.bind"; f.nic.de: "ns-1.de.de1.knot"; f.nic.de: "ns-2.de.de1.knot"; l.de.net: "ns-2.de.fr1.knot"; l.de.net: "ns-1.de.fr1.knot"; s.de.net: "ns-2.de.de10.knot"; s.de.net: "ns-1.de.de10.knot"; z.nic.de: "ns-1.de.de2.knot"; z.nic.de: "ns-2.de.de2.knot".

#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 1792629021 · primary f.nic.de

Found

Primary (MNAME): f.nic.de
Contact (RNAME): dns-operations.denic.de
Serial: 1792629021
Refresh / retry: 7200 s / 7200 s
Expire: 3600000 s
Negative TTL: 7200 s

Serial per nameserver

Nameserver	Serial
a.nic.de (194.0.0.53)	1792629021
a.nic.de (2001:678:2::53)	1792629021
f.nic.de (81.91.164.5)	1792629021
f.nic.de (2a02:568:0:2::53)	1792629021
l.de.net (77.67.63.105)	1792629021
l.de.net (2001:668:1f:11::105)	1792629021
n.de.net (194.146.107.6)	1792628996
n.de.net (2001:67c:1011:1::53)	1792629021
s.de.net (195.243.137.26)	1792629021
s.de.net (2003:8:14::53)	1792629021
z.nic.de (194.246.96.1)	1792629021
z.nic.de (2a02:568:fe02::de)	1792629021

Checks

!

Serials differ

The nameservers serve different versions of the zone: 1792628996 on n.de.net (194.146.107.6); 1792629021 on a.nic.de (194.0.0.53), a.nic.de (2001:678:2::53), f.nic.de (81.91.164.5), f.nic.de (2a02:568:0:2::53), l.de.net (77.67.63.105), l.de.net (2001:668:1f:11::105), n.de.net (2001:67c:1011:1::53), s.de.net (195.243.137.26), s.de.net (2003:8:14::53), z.nic.de (194.246.96.1), z.nic.de (2a02:568:fe02::de). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.

#22
!

Unusual SOA timers

retry 2h should be shorter than refresh 2h. Current values: refresh 2h, retry 2h, expire 1000h, negative TTL 2h.

#23
✓ Primary is a public nameserver #24

The primary nameserver f.nic.de is one of the listed nameservers.
✓ Contact dns-operations@denic.de #25

The SOA RNAME dns-operations.denic.de means dns-operations@denic.de.
✓ Timestamp serial #26

The serial 1792629021 is a Unix timestamp (2026-10-22 00:30 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: 2 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
26755	RSASHA256 (8)	SHA256 F341357809A59543…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
26755	KSK (257)	RSASHA256 (8)
32911	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 26755 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-11-02 #30

The earliest DNSKEY/SOA signature expires at 2026-11-02 07:15 UTC.
✓ NSEC3 as recommended #31

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

Records

info

7 records at the apex

Found

Read from: 194.0.0.53:53

Type	Value	TTL
SOA	f.nic.de. dns-operations.denic.de. 1792629021 7200 7200 3600000 7200	86400
NS	l.de.net.	86400
NS	s.de.net.	86400
NS	a.nic.de.	86400
NS	z.nic.de.	86400
NS	f.nic.de.	86400
NS	n.de.net.	86400

Checks

✓ TTLs within range #32

TTLs: NS 1d. The NS TTL at the parent is 2d and in the zone 1d; 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.
i

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