Domain report: hs-schmalkalden.de

Registration

info

.de country-code

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.
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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

warn

mars-two.hs-schmalkalden.de, phobos-two.hs-schmalkalden.de

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: mars-two.hs-schmalkalden.de, phobos-two.hs-schmalkalden.de
NS in the zone: mars-two.hs-schmalkalden.de, phobos-two.hs-schmalkalden.de

Nameserver	Addresses	Network (AS)	Glue
mars-two.hs-schmalkalden.de	212.201.66.50	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	212.201.66.50
phobos-two.hs-schmalkalden.de	212.201.66.51	AS680 DFN - Verein zur Foerderung eines Deutschen Forschungsnetzes e.V., DE	212.201.66.51

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2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: mars-two.hs-schmalkalden.de, phobos-two.hs-schmalkalden.de.

#6
✓ 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: mars-two.hs-schmalkalden.de, phobos-two.hs-schmalkalden.de.
✓ All names resolve #9

Every nameserver name has an address and is not an alias.
!

Nameservers in one network

all IPv4 addresses are in 212.201.66.0/24. A single network failure takes all nameservers down; RFC 2182 recommends topologically separate networks (anycast setups are an exception).

#10
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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): 2 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
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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
!

No IPv6

None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.

#13

pass

2 of 2 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
mars-two.hs-schmalkalden.de 212.201.66.50	NOERROR, 15 ms, authoritative	no	yes / yes	refused	-
phobos-two.hs-schmalkalden.de 212.201.66.51	NOERROR, 15 ms, authoritative	no	yes / yes	refused	-

✓ All respond #14

All 2 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.
✓ No version disclosed #17

The nameservers don't reveal their software version.
✓ 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.

pass

serial 2026092900 · primary mars-two.hs-schmalkalden.de

Nameserver	Serial
mars-two.hs-schmalkalden.de (212.201.66.50)	2026092900
phobos-two.hs-schmalkalden.de (212.201.66.51)	2026092900

✓ Serial 2026092900 everywhere #22

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

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

The primary nameserver mars-two.hs-schmalkalden.de is one of the listed nameservers.
✓ Contact hostmaster@hs-schmalkalden.de #25

The SOA RNAME hostmaster.hs-schmalkalden.de means hostmaster@hs-schmalkalden.de.
✓ Date-based serial #26

The serial 2026092900 follows the YYYYMMDDnn convention (2026-09-29).

warn

Not signed

info

13 records at the apex

Type	Value	TTL
SOA	mars-two.hs-schmalkalden.de. hostmaster.hs-schmalkalden.de. 2026092900 7200 3600 1209600 86400	86400
NS	mars-two.hs-schmalkalden.de.	86400
NS	phobos-two.hs-schmalkalden.de.	86400
A	212.201.66.186	86400
AAAA	2001:638:907:913:212:201:66:186	86400
MX	10 a1151.mx.srv.dfn.de.	86400
MX	10 b1151.mx.srv.dfn.de.	86400
MX	10 c1151.mx.srv.dfn.de.	86400
TXT	"HARICA-PxbaQsuifkuhecqp6dI"	86400
TXT	"brevo-code:b1414e0a234265a2faa294058248ae06"	86400
TXT	"google-site-verification=0Pw_pdAgGRL6otEXH4H5Rk7Hstvv5IeFTTWhKxDwlnk"	86400
TXT	"cisco-ci-domain-verification=2ede1001bad721fab6e8e1e85ca20a0a2e1042ccccf65ee1c6dc462a3cf2899"	86400
TXT	"v=spf1 mx a a:mailout.hs-schmalkalden.de include:ml.hs-schmalkalden.de include:studip.hs-schmalkalden.de include:gbv.de include:evaluation.hs-schmalkalden.de a:mail.tu-ilmenau.de -all"	86400