hrs.de

Checked 21 October 2026, 22:50 UTC · via 8.8.8.8
!Passed with warnings
22 passed 3 warnings 0 failed 4 info

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-1075.awsdns-06.org, ns-1708.awsdns-21.co.uk, ns-466.awsdns-58.com, ns-754.awsdns-30.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns-1075.awsdns-06.org, ns-1708.awsdns-21.co.uk, ns-466.awsdns-58.com, ns-754.awsdns-30.net
NS in the zone
ns-1075.awsdns-06.org, ns-1708.awsdns-21.co.uk, ns-466.awsdns-58.com, ns-754.awsdns-30.net
NameserverAddressesNetwork (AS)Glue
ns-1075.awsdns-06.org205.251.196.51 2600:9000:5304:3300::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1708.awsdns-21.co.uk205.251.198.172 2600:9000:5306:ac00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-466.awsdns-58.com205.251.193.210 2600:9000:5301:d200::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-754.awsdns-30.net205.251.194.242 2600:9000:5302:f200::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1075.awsdns-06.org, ns-1708.awsdns-21.co.uk, ns-466.awsdns-58.com, ns-754.awsdns-30.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

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1075.awsdns-06.org 205.251.196.51NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1075.awsdns-06.org 2600:9000:5304:3300::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1708.awsdns-21.co.uk 205.251.198.172NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1708.awsdns-21.co.uk 2600:9000:5306:ac00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-466.awsdns-58.com 205.251.193.210NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-466.awsdns-58.com 2600:9000:5301:d200::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-754.awsdns-30.net 205.251.194.242NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-754.awsdns-30.net 2600:9000:5302:f200::1NOERROR, 4 ms, authoritativenoyes / yesrefused-

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

warn

serial 1 · primary ns-754.awsdns-30.net

Found

Primary (MNAME)
ns-754.awsdns-30.net
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
60 s

Serial per nameserver

NameserverSerial
ns-1075.awsdns-06.org (205.251.196.51)1
ns-1075.awsdns-06.org (2600:9000:5304:3300::1)1
ns-1708.awsdns-21.co.uk (205.251.198.172)1
ns-1708.awsdns-21.co.uk (2600:9000:5306:ac00::1)1
ns-466.awsdns-58.com (205.251.193.210)1
ns-466.awsdns-58.com (2600:9000:5301:d200::1)1
ns-754.awsdns-30.net (205.251.194.242)1
ns-754.awsdns-30.net (2600:9000:5302:f200::1)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 1m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 2h, retry 15m, expire 14d, negative TTL 1m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-754.awsdns-30.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

19 records at the apex

Found

Read from
205.251.196.51:53
TypeValueTTL
SOAns-754.awsdns-30.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 60900
NSns-1075.awsdns-06.org.10800
NSns-1708.awsdns-21.co.uk.10800
NSns-466.awsdns-58.com.10800
NSns-754.awsdns-30.net.10800
A63.176.187.22660
A3.73.199.18460
MX10 mxa-00928c01.gslb.pphosted.com.300
MX10 mxb-00928c01.gslb.pphosted.com.300
TXT"DfUs+MM7o16K+KDntAjOAXRWSd5DgTEpNquEd5P9d0+ugo6A1JpTMfZFUmskHjMxOdT9v/hD0r8RAVpMSVRtcg=="10800
TXT"EVTqteF1AuHigTfm8aELt0XgIV7J6i0NIas8gQhrXNxHcyNwsuUedJg52f75lMeqezJic0kp+X7Sk6k2nMLMJQ=="10800
TXT"atlassian-domain-verification=FaoosxjVm4Rud/WDjwc6giVQgZKS9ttFvwodaS/mcdxbhtoqEOF0VYvAAb0dzHGa"10800
TXT"d365mktkey=9zJSYilJ1hZIGlgZ06sIJqJ9JUGgVUdlt99wN3eOpW8x"10800
TXT"d365mktkey=p1tttGxDWZpvdHq1RaAXqs8F1ntIBxLdWFcy44BzmNUx"10800
TXT"docusign=4352ca0f-7ca0-45fd-87ad-cbe2775df038"10800
TXT"google-site-verification=Umkl-SNRpUgLFEr4nQb8U-fvehx_ZuVYW_1cqE4SslM"10800
TXT"google-site-verification=gf9RIcGeJIzrrFyJUQTmVMe5gJPdinwF425LjG15DXY"10800
TXT"miro-verification=12bbfbd9c158bf6a63a7130b0856be464926f2f2"10800
TXT"v=spf1 ip4:194.153.190.201 ip4:194.153.190.203 ip4:194.153.190.226 ip4:194.153.190.227 ip4:66.159.233.175 ip4:143.55.150.43 a include:spf.protection.outlook.com include:_spf.act-on.net include:spf.EU.exclaimer.net include:_relay.amadeus.com -all"10800

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 3h; 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