Domain report: maerklin.de

Registration

info

.de country-code

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.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

dns1.21torr.com, dns3.21torr.com

Nameserver	Addresses	Network (AS)	Glue
dns1.21torr.com	213.143.192.3	AS13233 SCHOENE-AS - Schoene Toechter GmbH, DE	-
dns3.21torr.com	213.143.193.4	AS13233 SCHOENE-AS - Schoene Toechter GmbH, DE	-
pdns1.21torr.com (zone only)	213.143.192.19	AS13233 SCHOENE-AS - Schoene Toechter GmbH, DE	-

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2 nameservers

Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dns1.21torr.com, dns3.21torr.com.

#6
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only in the zone: pdns1.21torr.com. dns1.21torr.com, dns3.21torr.com report NS dns1.21torr.com dns3.21torr.com pdns1.21torr.com.

#7
✓ 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 2 IPv4 /24s and 0 IPv6 /48s.
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All nameservers in one AS

All nameserver addresses are announced by one network operator (AS13233 (SCHOENE-AS - Schoene Toechter 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
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All nameserver names under .com

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

fail

2 of 3 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
dns1.21torr.com 213.143.192.3	NOERROR, 19 ms, authoritative	no	yes / yes	refused	Hi my name is Bob.
dns3.21torr.com 213.143.193.4	NOERROR, 20 ms, authoritative	no	yes / yes	refused	and my name is Marry.
pdns1.21torr.com 213.143.192.19	no response	no	no / no	-	-

✗

Nameservers not responding

These addresses did not answer, so resolvers waste time on timeouts: pdns1.21torr.com (213.143.192.19): read udp 46.225.38.91:34625->213.143.192.19:53: read: connection refused.

#14
✓ All authoritative #15

Every responding nameserver answers authoritatively for the zone.
✓ No recursion #16

The nameservers do not answer recursive queries for other domains.
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Identifying string disclosed

These nameservers answer version queries with a string that is not a version number: dns1.21torr.com: "Hi my name is Bob."; dns3.21torr.com: "and my name is Marry.".

#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.

info

serial 2016061931 · primary dns.maerklin.de

Nameserver	Serial
dns1.21torr.com (213.143.192.3)	2016061931
dns3.21torr.com (213.143.193.4)	2016061931

✓ Serial 2016061931 everywhere #22

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

SOA refresh 1d, retry 3h, expire 10d, negative TTL 1d.
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Hidden master

The primary nameserver dns.maerklin.de is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.

#24
✓ Contact hostmaster@maerklin.com #25

The SOA RNAME hostmaster.maerklin.com means hostmaster@maerklin.com.
✓ Date-based serial #26

The serial 2016061931 follows the YYYYMMDDnn convention (2016-06-19).

warn

Not signed

warn

10 records at the apex

Type	Value	TTL
SOA	dns.maerklin.de. hostmaster.maerklin.com. 2016061931 86400 10800 864000 86400	86400
NS	pdns1.21torr.com.	0
NS	dns1.21torr.com.	0
NS	dns3.21torr.com.	0
A	213.143.192.173	867600
MX	10 mail.maerklin.de.	90000
TXT	"2017102309303136s8ttzhty45adwz1vdct5i5mpg83thq553g8i2k75cu0zr7bn"	86400
TXT	"v=spf1 a mx ip4:213.143.192.0/24 ip4:85.202.88.17/32 ip4:217.77.254.3/32 ip4:217.77.254.2/32 ip4:217.77.255.3/32 ip4:217.77.255.2/32 ~all"	86400
TXT	"google-site-verification=1iJ-oqm0TnZnzjCMFWPYvJ5BF8UkDR_-x4zCyofE0Vk"	86400
TXT	"MS=ms23725005"	86400