Domain report: stsg.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

ns1.x-dot.de, ns2.x-dot.de, ns3.xdot.de

Nameserver	Addresses	Network (AS)	Glue
ns1.x-dot.de	159.255.168.253	AS8881 VERSATEL - 1&1 Versatel GmbH, DE	159.255.168.253
ns2.x-dot.de	159.255.169.253	AS8881 VERSATEL - 1&1 Versatel GmbH, DE	159.255.169.253
ns3.xdot.de	159.255.170.5	AS8881 VERSATEL - 1&1 Versatel GmbH, DE	35.157.179.121

✓ 3 nameservers #6

Delegated to ns1.x-dot.de, ns2.x-dot.de, ns3.xdot.de.
✓ Parent and zone agree #7

The parent delegation and the zone's NS records list the same nameservers.
!

Glue differs from the zone

The addresses at the parent (glue) differ from the addresses in the zone: ns3.xdot.de (glue 35.157.179.121, zone 159.255.170.5). Update the glue at your registrar.

#8
✓ 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.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS8881 (VERSATEL - 1&1 Versatel GmbH, DE): 3 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
!

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
ns1.x-dot.de 159.255.168.253	NOERROR, 21 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.5.5 (built Dec 8 2022 18:11:11 by root@1efc37074878)
ns2.x-dot.de 159.255.169.253	NOERROR, 21 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.5.5 (built Dec 8 2022 18:11:11 by root@1efc37074878)
ns3.xdot.de 159.255.170.5	NOERROR, 20 ms, authoritative	no	yes / yes	refused	PowerDNS Authoritative Server 4.5.5 (built Dec 8 2022 18:11:11 by root@1efc37074878)

✓ 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: ns1.x-dot.de: "PowerDNS Authoritative Server 4.5.5 (built Dec 8 2022 18:11:11 by root@1efc37074878)"; ns2.x-dot.de: "PowerDNS Authoritative Server 4.5.5 (built Dec 8 2022 18:11:11 by root@1efc37074878)"; ns3.xdot.de: "PowerDNS Authoritative Server 4.5.5 (built Dec 8 2022 18:11:11 by root@1efc37074878)". 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 2020030701 · primary ns1.x-dot.de

✓ Serial 2020030701 everywhere #22

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

SOA refresh 3h, retry 1h, expire 14d, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver ns1.x-dot.de is one of the listed nameservers.
✓ Contact postmaster@stsg.de #25

The SOA RNAME postmaster.stsg.de means postmaster@stsg.de.
✓ Date-based serial #26

The serial 2020030701 follows the YYYYMMDDnn convention (2020-03-07).

warn

Not signed

info

9 records at the apex

Type	Value	TTL
SOA	ns1.x-dot.de. postmaster.stsg.de. 2020030701 10800 3600 1209600 86400	86400
NS	ns2.x-dot.de.	86400
NS	ns3.xdot.de.	86400
NS	ns1.x-dot.de.	86400
A	159.255.168.75	86400
MX	10 s2vg300mr01.pzd-svn.de.	86400
MX	10 s2vg300mr02.pzd-svn.de.	86400
TXT	"MS=336F59EFCDFAFF5303FD0762C270444298082831"	3600
TXT	"v=spf1 mx a ip4:159.255.168.0/23 ip4:159.255.170.0/25 include:pzd-svn.de -all"	3600