Domain report: clark.de

Registration

info

.de country-code

Found

TLD: .de (country-code)
ICANN policies apply: no

Checks

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

Delegation

info

ns-1047.awsdns-02.org, ns-1915.awsdns-47.co.uk, ns-206.awsdns-25.com, ns-707.awsdns-24.net

Found

Parent zone: de
Delegation from: a.nic.de (194.0.0.53)
NS at the parent: ns-1047.awsdns-02.org, ns-1915.awsdns-47.co.uk, ns-206.awsdns-25.com, ns-707.awsdns-24.net
NS in the zone: ns-1047.awsdns-02.org, ns-1915.awsdns-47.co.uk, ns-206.awsdns-25.com, ns-707.awsdns-24.net

Nameserver	Addresses	Network (AS)	Glue
ns-1047.awsdns-02.org	205.251.196.23 2600:9000:5304:1700::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-1915.awsdns-47.co.uk	205.251.199.123 2600:9000:5307:7b00::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-206.awsdns-25.com	205.251.192.206 2600:9000:5300:ce00::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-
ns-707.awsdns-24.net	205.251.194.195 2600:9000:5302:c300::1	AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US	-

Checks

✓ 4 nameservers #6

Delegated to ns-1047.awsdns-02.org, ns-1915.awsdns-47.co.uk, ns-206.awsdns-25.com, ns-707.awsdns-24.net.
✓ 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 4 IPv4 /24s and 4 IPv6 /48s.
i

All nameservers in one AS

All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.

#11
✓ Nameserver names under 4 TLDs #12

Nameserver names use the TLDs .com, .net, .org, .uk.
✓ All reachable over IPv6 #13

Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns-1047.awsdns-02.org 205.251.196.23	NOERROR, 3 ms, authoritative	no	yes / yes	refused	-
ns-1047.awsdns-02.org 2600:9000:5304:1700::1	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-
ns-1915.awsdns-47.co.uk 205.251.199.123	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-1915.awsdns-47.co.uk 2600:9000:5307:7b00::1	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-206.awsdns-25.com 205.251.192.206	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-206.awsdns-25.com 2600:9000:5300:ce00::1	NOERROR, 9 ms, authoritative	no	yes / yes	refused	-
ns-707.awsdns-24.net 205.251.194.195	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-
ns-707.awsdns-24.net 2600:9000:5302:c300::1	NOERROR, 4 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 8 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.

SOA

pass

serial 1 · primary ns-707.awsdns-24.net

Found

Primary (MNAME): ns-707.awsdns-24.net
Contact (RNAME): awsdns-hostmaster.amazon.com
Serial: 1
Refresh / retry: 7200 s / 900 s
Expire: 1209600 s
Negative TTL: 86400 s

Serial per nameserver

Nameserver	Serial
ns-1047.awsdns-02.org (205.251.196.23)	1
ns-1047.awsdns-02.org (2600:9000:5304:1700::1)	1
ns-1915.awsdns-47.co.uk (205.251.199.123)	1
ns-1915.awsdns-47.co.uk (2600:9000:5307:7b00::1)	1
ns-206.awsdns-25.com (205.251.192.206)	1
ns-206.awsdns-25.com (2600:9000:5300:ce00::1)	1
ns-707.awsdns-24.net (205.251.194.195)	1
ns-707.awsdns-24.net (2600:9000:5302:c300::1)	1

Checks

✓ Serial 1 everywhere #22

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

SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
✓ Primary is a public nameserver #24

The primary nameserver ns-707.awsdns-24.net is one of the listed nameservers.
✓ Contact awsdns-hostmaster@amazon.com #25

The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
✓ Counter serial #26

The serial 1 is a plain counter.

DNSSEC

warn

Not signed

Found

Validated by resolver: no

Checks

!

Not signed

The zone is not signed with DNSSEC, so answers can be spoofed. Enable DNSSEC at your DNS provider and publish the DS record at your registrar.

#27

Records

warn

27 records at the apex

Found

Read from: 205.251.196.23:53

Type	Value	TTL
SOA	ns-707.awsdns-24.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400	900
NS	ns-1047.awsdns-02.org.	172800
NS	ns-1915.awsdns-47.co.uk.	172800
NS	ns-206.awsdns-25.com.	172800
NS	ns-707.awsdns-24.net.	172800
A	63.182.84.29	60
A	3.126.100.20	60
A	18.158.130.131	60
MX	1 aspmx.l.google.com.	3600
MX	10 alt3.aspmx.l.google.com.	3600
MX	10 alt4.aspmx.l.google.com.	3600
MX	5 alt1.aspmx.l.google.com.	3600
MX	5 alt2.aspmx.l.google.com.	3600
TXT	"2txv2zbkv43byx723jjgd7n4q55bj6dd"	3600
TXT	"465-hj8-9y7"	3600
TXT	"Foxit-domain-verification=74bfbf04fcdcfa7fcd6ba21fc5b73116"	3600
TXT	"MS=ms35246785"	3600
TXT	"anthropic-domain-verification-2zf5nn=ThDspv3NSd70D4feSix7Ssivn"	3600
TXT	"apple-domain-verification=hDBe0IXFxyTGDt4a"	3600
TXT	"atlassian-domain-verification=lKQ9WXLjP127KSerTFkZDcW4v21hODe8kncqvU6E9Cjbs9zDUpopnxvFjAePb9wq"	3600
TXT	"facebook-domain-verification=0olvlmw4sl3l1wb7fqxqxnxokw3lpg"	3600
TXT	"google-site-verification=HUAGHsz4Jefhr5eBXy-xF20uGSA4tLScNG8GCCwWPOg"	3600
TXT	"google-site-verification=nW60k5ofKgvtVCRut1UK-Jo8FZLyer5bm6In2eXsAsw"	3600
TXT	"knowbe4-site-verification=1c4a8e4d3481e912e51efe25217f2ab6"	3600
TXT	"miro-verification=8ccbf5e146c47f908e0f05b97af9ab7d3888bc40"	3600
TXT	"v=spf1 include:_spf.salesforce.com include:spf.mandrillapp.com include:servers.mcsv.net include:_spf.google.com include:spf.mailjet.com include:_spf.zimpel.de ip4:213.73.83.190 ip4:147.160.167.0/26 ip4:23.21.109.197 ip4:23.21.109.212 ip4:34.89.254.196 ip4" ":35.246.196.154 ip4:34.107.42.136 ip4:103.151.192.0/23 ip4:185.12.80.0/22 ip4:188.172.128.0/20 ip4:192.161.144.0/20 ip4:216.198.0.0/18 -all"	3600
TXT	"wiz-domain-verification=5e8823008b5c356d1bbcca23b4a646e8bb808f80b28aabc0a1f34b570ae36b98"	3600

Checks

!

Very low TTLs

These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 1d and in the zone 2d; resolvers may use either.

#32
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
✓ No wildcard #34

Names that don't exist return NXDOMAIN.
i

No CAA records

Without CAA records any certificate authority may issue certificates for this domain. A CAA record limits issuance to the CAs you use.

#35