Domain report: uni-mainz.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.
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

info

b.ns14.net, c.ns14.net, d.ns14.net, ns-extern.zdv.uni-mainz.de

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: b.ns14.net, c.ns14.net, d.ns14.net, ns-extern.zdv.uni-mainz.de
NS in the zone: b.ns14.net, c.ns14.net, d.ns14.net, ns-extern.zdv.uni-mainz.de

Nameserver	Addresses	Network (AS)	Glue
b.ns14.net	217.160.81.160 2001:8d8:fe:53:217:160:81:160	AS8560 IONOS-AS - IONOS SE, DE AS8560 IONOS-AS - IONOS SE, DE	-
c.ns14.net	185.132.35.160 2607:f1c0:fe:53:185:132:35:160	AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB	-
d.ns14.net	185.132.34.160 2607:f1c0:fe:53:185:132:34:160	AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB AS15418 IONOS-ANYCAST - Fasthosts Internet Limited, GB	-
ns-extern.zdv.uni-mainz.de	134.93.144.7	AS2857 RLP-NET - Johannes Gutenberg-Universitaet Mainz, DE	134.93.144.7

✓ 4 nameservers #6

Delegated to b.ns14.net, c.ns14.net, d.ns14.net, ns-extern.zdv.uni-mainz.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: ns-extern.zdv.uni-mainz.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 4 IPv4 /24s and 2 IPv6 /48s.
✓ 3 autonomous systems #11

The nameservers are spread over: AS15418 (IONOS-ANYCAST - Fasthosts Internet Limited, GB): 4 addresses; AS2857 (RLP-NET - Johannes Gutenberg-Universitaet Mainz, DE): 1 address; AS8560 (IONOS-AS - IONOS SE, DE): 2 addresses.
✓ Nameserver names under 2 TLDs #12

Nameserver names use the TLDs .de, .net.
i

Partly IPv6

These nameservers have no IPv6 address: ns-extern.zdv.uni-mainz.de.

#13

warn

7 of 7 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
b.ns14.net 217.160.81.160	NOERROR, 9 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
b.ns14.net 2001:8d8:fe:53:217:160:81:160	NOERROR, 10 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
c.ns14.net 185.132.35.160	NOERROR, 3 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
c.ns14.net 2607:f1c0:fe:53:185:132:35:160	NOERROR, 3 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
d.ns14.net 185.132.34.160	NOERROR, 3 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
d.ns14.net 2607:f1c0:fe:53:185:132:34:160	NOERROR, 4 ms, authoritative	no	yes / yes	refused	Served by PowerDNS - https://www.powerdns.com/
ns-extern.zdv.uni-mainz.de 134.93.144.7	NOERROR, 4 ms, authoritative	no	yes / yes	refused	9.20.29

✓ All respond #14

All 7 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: ns-extern.zdv.uni-mainz.de: "9.20.29". 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.

pass

serial 2026102121 · primary ns-extern.zdv.uni-mainz.de

✓ Serial 2026102121 everywhere #22

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

SOA refresh 8h, retry 2h, expire 7d, negative TTL 1h.
✓ Primary is a public nameserver #24

The primary nameserver ns-extern.zdv.uni-mainz.de is one of the listed nameservers.
✓ Contact noc@uni-mainz.de #25

The SOA RNAME noc.uni-mainz.de means noc@uni-mainz.de.
✓ Date-based serial #26

The serial 2026102121 follows the YYYYMMDDnn convention (2026-10-21).

warn

Not signed

pass

21 records at the apex

Type	Value	TTL
SOA	ns-extern.zdv.uni-mainz.de. noc.uni-mainz.de. 2026102121 28800 7200 604800 3600	86400
NS	ns-extern.zdv.uni-mainz.de.	86400
NS	d.ns14.net.	86400
NS	c.ns14.net.	86400
NS	b.ns14.net.	86400
A	134.93.178.31	86400
AAAA	2001:4c80:40:63c:4:86ff:fe5d:b21f	86400
MX	100 mailgate-2.zdv.uni-mainz.de.	86400
MX	100 mailgate-1.zdv.uni-mainz.de.	86400
MX	100 mailgate-3.zdv.uni-mainz.de.	86400
TXT	"v=spf1 mx ip4:134.93.178.240/28 ip6:2001:4c80:40:62d::/64 ~all"	86400
TXT	"jetbrains-domain-verification=9xzrr00gp1gp37buvmp0ap1sn"	86400
TXT	"canva-site-verification=AMtvtZhvPy37QDJDMcz3yA"	86400
TXT	"v=spf2.0/mfrom,pra mx ip4:134.93.178.240/28 ip6:2001:4c80:40:62d::/64 ~all"	86400
TXT	"autodesk-domain-verification=F5sveLQStxsQuotyWeec"	86400
TXT	"deepl-domain-verification=51fa495033c04f1584b1ea9bd5bc691b"	86400
CAA	0 iodef "mailto:hostmaster@uni-mainz.de"	86400
CAA	0 issue "pki.dfn.de"	86400
CAA	0 issue "letsencrypt.org"	86400
CAA	0 issue "actalis.it"	86400
CAA	0 issue "harica.gr"	86400

✓ TTLs within range #32

TTLs: A 1d, AAAA 1d, MX 1d, 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: pki.dfn.de, letsencrypt.org, actalis.it, harica.gr.