Domain report: brandenburg.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

ns1.brandenburg.de, ns4.variomedia.de, pns.brandenburg.de

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: ns1.brandenburg.de, ns4.variomedia.de, pns.brandenburg.de
NS in the zone: ns1.brandenburg.de, ns4.variomedia.de, pns.brandenburg.de

Nameserver	Addresses	Network (AS)	Glue
ns1.brandenburg.de	194.76.232.165	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	194.76.232.165
ns4.variomedia.de	81.28.232.230 2a00:1c38::4:53	AS29014 SCALEUP - ScaleUp Technologies GmbH & Co. KG, DE AS29014 SCALEUP - ScaleUp Technologies GmbH & Co. KG, DE	-
pns.brandenburg.de	194.76.232.129	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	194.76.232.129

Checks

✓ 3 nameservers #6

Delegated to ns1.brandenburg.de, ns4.variomedia.de, pns.brandenburg.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: ns1.brandenburg.de, pns.brandenburg.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 2 IPv4 /24s and 1 IPv6 /48.
✓ 2 autonomous systems #11

The nameservers are spread over: AS29014 (SCALEUP - ScaleUp Technologies GmbH & Co. KG, DE): 2 addresses; AS680 (DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE): 2 addresses.
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: ns1.brandenburg.de, pns.brandenburg.de.

#13

Nameservers

warn

4 of 4 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns1.brandenburg.de 194.76.232.165	NOERROR, 13 ms, authoritative	no	yes / yes	refused	Public DNS server v28.3.2. Keep your hands off!
ns4.variomedia.de 81.28.232.230	NOERROR, 17 ms, authoritative	no	yes / yes	refused	BIND
ns4.variomedia.de 2a00:1c38::4:53	NOERROR, 17 ms, authoritative	no	yes / yes	refused	BIND
pns.brandenburg.de 194.76.232.129	NOERROR, 13 ms, authoritative	no	yes / yes	refused	Public DNS server v28.3.2. Keep your hands off!

Checks

✓ All respond #14

All 4 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.brandenburg.de: "Public DNS server v28.3.2. Keep your hands off!"; pns.brandenburg.de: "Public DNS server v28.3.2. Keep your hands off!". 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 2026102019 · primary pns.brandenburg.de

Found

Primary (MNAME): pns.brandenburg.de
Contact (RNAME): vpnadmin.brandenburg.de
Serial: 2026102019
Refresh / retry: 28800 s / 7200 s
Expire: 1209600 s
Negative TTL: 86400 s

Serial per nameserver

Nameserver	Serial
ns1.brandenburg.de (194.76.232.165)	2026102019
ns4.variomedia.de (81.28.232.230)	2026102019
ns4.variomedia.de (2a00:1c38::4:53)	2026102019
pns.brandenburg.de (194.76.232.129)	2026102019

Checks

✓ Serial 2026102019 everywhere #22

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

SOA refresh 8h, retry 2h, expire 14d, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver pns.brandenburg.de is one of the listed nameservers.
✓ Contact vpnadmin@brandenburg.de #25

The SOA RNAME vpnadmin.brandenburg.de means vpnadmin@brandenburg.de.
✓ Date-based serial #26

The serial 2026102019 follows the YYYYMMDDnn convention (2026-10-20).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver: yes
Denial of existence: NSEC
Signatures valid until: 12 November 2026

DS at the parent

Key tag	Algorithm	Digest	Matches a key
385	RSASHA256 (8)	SHA256 E1C3F6A075A01E6A…	yes

DNSKEY in the zone

Key tag	Role	Algorithm
35650	ZSK (256)	RSASHA256 (8)
385	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 385 (SHA256).
✓ Modern algorithms #29

Key algorithms: RSASHA256 (8).
✓ Signatures valid until 2026-11-12 #30

The earliest DNSKEY/SOA signature expires at 2026-11-12 23:59 UTC.
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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

pass

24 records at the apex

Found

Read from: 194.76.232.165:53

Type	Value	TTL
SOA	pns.brandenburg.de. vpnadmin.brandenburg.de. 2026102019 28800 7200 1209600 86400	600
NS	pns.brandenburg.de.	600
NS	ns4.variomedia.de.	600
NS	ns1.brandenburg.de.	600
A	194.76.232.226	600
AAAA	2001:638:81a::2	600
MX	10 pmmx-hea-p01.brandenburg.de.	600
MX	10 pmmx-hea-p02.brandenburg.de.	600
TXT	"v=spf1 mx ip4:194.76.232.119 ip4:194.76.232.120 ip4:194.76.232.208 ip4:194.76.232.217 ip4:194.76.232.222 ip4:194.76.232.223 ip4:194.76.232.224 ip4:193.28.249.33 ip4:193.28.241.133 ~all"	600
TXT	"_telesec-domain-validation=362456_2026-09-10_hp04R6HbT4nWZNZgnSEJ9pQSgCSKlZgpZih9PTkvf1XyiV9O4H"	600
TXT	"rovag_verification_token=D88F7C686C8440B2A0037C7ADB802948"	600
TXT	"google-site-verification=w8dEVksQpCsO7p0UFmr4_UBjIV4OHjBGiOe9rwfH-CI"	600
TXT	"HARICA-iHiAiJhfMZxIbGxm9Yt"	600
TXT	"u0r1kgq369h3vo9j1ftpl47snh"	600
CAA	0 issuewild "telesec.de"	600
CAA	0 issue "pki.dfn.de"	600
CAA	0 iodef "mailto:vpnadmin@zit-bb.brandenburg.de"	600
CAA	0 issue "harica.gr"	600
CAA	0 issue "d-trust.de"	600
CAA	0 issue "letsencrypt.org"	600
CAA	0 issuewild "d-trust.de"	600
CAA	0 issuewild "letsencrypt.org"	600
CAA	0 issue "godaddy.com"	600
CAA	0 issue "telesec.de"	600

Checks

✓ TTLs within range #32

TTLs: A 10m, AAAA 10m, MX 10m, NS 10m. The NS TTL at the parent is 1d and in the zone 10m; 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: telesec.de, pki.dfn.de, harica.gr, d-trust.de, letsencrypt.org, godaddy.com.