Domain report: fh-muenster.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

dns-1.dfn.de, dns-2.dfn.de, ns01.fh-muenster.de, ns11.fh-muenster.de

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: dns-1.dfn.de, dns-2.dfn.de, ns01.fh-muenster.de, ns11.fh-muenster.de
NS in the zone: dns-1.dfn.de, dns-2.dfn.de, ns01.fh-muenster.de, ns11.fh-muenster.de

Nameserver	Addresses	Network (AS)	Glue
dns-1.dfn.de	193.174.75.50 2001:638:d:b101::1	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	-
dns-2.dfn.de	193.174.75.54 2001:638:d:b102::1	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	-
ns01.fh-muenster.de	194.95.10.10 2a02:c6a0:1000:1::53	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	194.95.10.10 2a02:c6a0:1000:1::53
ns11.fh-muenster.de	194.95.10.140 2a02:c6a0:1000:2::53	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	194.95.10.140 2a02:c6a0:1000:2::53

Checks

✓ 4 nameservers #6

Delegated to dns-1.dfn.de, dns-2.dfn.de, ns01.fh-muenster.de, ns11.fh-muenster.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: ns01.fh-muenster.de, ns11.fh-muenster.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 2 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS680 (DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE): 8 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
✓ 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
dns-1.dfn.de 193.174.75.50	NOERROR, 12 ms, authoritative	no	yes / yes	refused	0
dns-1.dfn.de 2001:638:d:b101::1	NOERROR, 14 ms, authoritative	no	yes / yes	refused	0
dns-2.dfn.de 193.174.75.54	NOERROR, 7 ms, authoritative	no	yes / yes	refused	0
dns-2.dfn.de 2001:638:d:b102::1	NOERROR, 7 ms, authoritative	no	yes / yes	refused	0
ns01.fh-muenster.de 194.95.10.10	NOERROR, 11 ms, authoritative	no	yes / yes	refused	-
ns01.fh-muenster.de 2a02:c6a0:1000:1::53	NOERROR, 10 ms, authoritative	no	yes / yes	refused	-
ns11.fh-muenster.de 194.95.10.140	NOERROR, 12 ms, authoritative	no	yes / yes	refused	-
ns11.fh-muenster.de 2a02:c6a0:1000:2::53	NOERROR, 16 ms, authoritative	no	yes / yes	refused	-

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: dns-1.dfn.de: "0"; dns-2.dfn.de: "0".

#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 2021071830 · primary ns01.fh-muenster.de

Found

Primary (MNAME): ns01.fh-muenster.de
Contact (RNAME): hostmaster.fh-muenster.de
Serial: 2021071830
Refresh / retry: 21600 s / 3600 s
Expire: 604800 s
Negative TTL: 86400 s

Serial per nameserver

Nameserver	Serial
dns-1.dfn.de (193.174.75.50)	2021071830
dns-1.dfn.de (2001:638:d:b101::1)	2021071830
dns-2.dfn.de (193.174.75.54)	2021071830
dns-2.dfn.de (2001:638:d:b102::1)	2021071830
ns01.fh-muenster.de (194.95.10.10)	2021071830
ns01.fh-muenster.de (2a02:c6a0:1000:1::53)	2021071830
ns11.fh-muenster.de (194.95.10.140)	2021071830
ns11.fh-muenster.de (2a02:c6a0:1000:2::53)	2021071830

Checks

✓ Serial 2021071830 everywhere #22

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

SOA refresh 6h, retry 1h, expire 7d, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver ns01.fh-muenster.de is one of the listed nameservers.
✓ Contact hostmaster@fh-muenster.de #25

The SOA RNAME hostmaster.fh-muenster.de means hostmaster@fh-muenster.de.
✓ Date-based serial #26

The serial 2021071830 follows the YYYYMMDDnn convention (2021-07-18).

DNSSEC

warn

Not signed

Found

Validated by resolver: no

Checks

!

Not signed

The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.

#27

Records

pass

29 records at the apex

Found

Read from: 193.174.75.50:53

Type	Value	TTL
SOA	ns01.fh-muenster.de. hostmaster.fh-muenster.de. 2021071830 21600 3600 604800 86400	86400
NS	ns01.fh-muenster.de.	86400
NS	dns-1.dfn.de.	86400
NS	ns11.fh-muenster.de.	86400
NS	dns-2.dfn.de.	86400
A	185.149.213.21	3600
AAAA	2a02:c6a0:2020:1bf::20	86400
MX	100 mx4.fh-muenster.de.	3600
MX	100 mx3.fh-muenster.de.	3600
TXT	"MS=ms68908616"	3600
TXT	"mentimeter-eb2c0195-7941-4a19-93f2-731722c114bd"	3600
TXT	"google-gws-recovery-domain-verification=64598074"	3600
TXT	"spycloud-domain-verification=5da34ca7-944b-4d18-bbc8-ac6247c52c23"	3600
TXT	"_telesec-domain-validation=2023-09-04_Cjd5tPZghKd2h3hVqBMLV14lZEQ5uHVrmfp33aST1wIOEQidVM"	3600
TXT	"sophos-domain-verification=24e657d3d13e989a1a49a8b229e33c8534bc63c526d4936a88a2f9fdf4db1038"	3600
TXT	"abuseipdb-verification=7HkEafIo"	3600
TXT	"v=spf1 include:_mx-out.fh-muenster.de include:spf.protection.outlook.com include:_netblocks-v4-1.fh-muenster.de include:_netblocks-v4-2.fh-muenster.de include:_netblocks-v6-1.fh-muenster.de -all"	3600
TXT	"adobe-idp-site-verification=ba4f896a21049040ac0b9cd40b3c5b90468211edda1b139a25e8f1e795bf2fcf"	3600
TXT	"cisco-ci-domain-verification=37c656e163450e5c2745409e025fee00fba2010316bb7eb812d98e3bd8db9ce9"	3600
TXT	"ZOOM_verify_u_37K7KxS_2ZvHK18nrURw"	3600
TXT	"google-site-verification=Cs8SA5DIlgOkEIkmFdquqBE3rGPWitTgRisyrQvRV7A"	3600
TXT	"apple-domain-verification=app4DXKVEue8VNyq"	3600
TXT	"google-site-verification=IhcoKsVrNBjDastdwzHUAA6fIiQ2yU0nEo1XQY5wzgo"	3600
TXT	"_telesec-domain-validation=352633_2025-09-02_IA7n7t5qacz6X6vhSKO0Sld5cQGAeoXv7Yjjnz6G6J4zcPCjWi"	3600
CAA	0 issue "telesec.de"	86400
CAA	0 issue "letsencrypt.org"	86400
CAA	0 iodef "mailto:it-security@fh-muenster.de"	86400
CAA	0 issue "harica.gr"	86400
CAA	0 issue "sectigo.com"	86400

Checks

✓ TTLs within range #32

TTLs: A 1h, AAAA 1d, MX 1h, NS 1d.
✓ 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, letsencrypt.org, harica.gr, sectigo.com.