Domain report: nfdi.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

warn

soa1.ilk.net, soa2.ilk.de, soa3.ilkdns.de

Nameserver	Addresses	Network (AS)	Glue
soa1.ilk.net	212.86.193.232	AS12480 ASILK - ILK Internet GmbH Rechnerkommunikation im Internet, DE	-
soa2.ilk.de	194.45.22.72	AS12480 ASILK - ILK Internet GmbH Rechnerkommunikation im Internet, DE	194.45.22.72
soa3.ilkdns.de	62.48.71.35	AS15743 NETDE - net.de AG, DE	-

✓ 3 nameservers #6

Delegated to soa1.ilk.net, soa2.ilk.de, soa3.ilkdns.de.
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
✓ No glue needed #8

All nameservers are outside the zone, so no glue records are needed.
✓ 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 3 IPv4 /24s and 0 IPv6 /48s.
✓ 2 autonomous systems #11

The nameservers are spread over: AS12480 (ASILK - ILK Internet GmbH Rechnerkommunikation im Internet, DE): 2 addresses; AS15743 (NETDE - net.de AG, DE): 1 address.
✓ Nameserver names under 2 TLDs #12

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

No IPv6

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

#13

warn

3 of 3 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
soa1.ilk.net 212.86.193.232	NOERROR, 6 ms, authoritative	no	yes / yes	refused	9.16.50-Debian
soa2.ilk.de 194.45.22.72	NOERROR, 8 ms, authoritative	no	yes / yes	refused	9.16.50-Debian
soa3.ilkdns.de 62.48.71.35	NOERROR, 11 ms, authoritative	no	yes / yes	refused	-

✓ All respond #14

All 3 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: soa1.ilk.net: "9.16.50-Debian"; soa2.ilk.de: "9.16.50-Debian". 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 2026071600 · primary soa1.ilk.net

✓ Serial 2026071600 everywhere #22

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

SOA refresh 8h, retry 2h, expire 1000h, negative TTL 1h.
✓ Primary is a public nameserver #24

The primary nameserver soa1.ilk.net is one of the listed nameservers.
✓ Contact hostmaster@ilk.net #25

The SOA RNAME hostmaster.ilk.net means hostmaster@ilk.net.
✓ Date-based serial #26

The serial 2026071600 follows the YYYYMMDDnn convention (2026-07-16).

warn

Not signed

info

10 records at the apex

Type	Value	TTL
SOA	soa1.ilk.net. hostmaster.ilk.net. 2026071600 28800 7200 3600000 3600	86400
NS	soa2.ilk.de.	86400
NS	soa3.ilkdns.de.	86400
NS	soa1.ilk.net.	86400
A	212.86.195.119	300
MX	10 esa2.ilk.net.	3600
MX	10 esa1.ilk.net.	3600
TXT	"google-site-verification=Zi69JJUwWm58bSCePVN2z1b5vqU0hvLXtbII3Oe-n40"	3600
TXT	"zone-ownership-verification-23303342c3c888dc596cd9a1bedc29988a4b27632ea0487d8341745eb3ca071f"	3600
TXT	"v=spf1 ip4:212.86.197.153 ip4:212.86.195.151 ip4:194.95.114.4 ip4:212.86.197.156 include:spf.ilk.net include:spf.scc.kit.edu -all"	3600