sparwelt.de

Checked 22 October 2026, 00:23 UTC · via 8.8.8.8
!Passed with warnings
27 passed 1 warning 0 failed 5 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-1326.awsdns-37.org, ns-1904.awsdns-46.co.uk, ns-317.awsdns-39.com, ns-814.awsdns-37.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns-1326.awsdns-37.org, ns-1904.awsdns-46.co.uk, ns-317.awsdns-39.com, ns-814.awsdns-37.net
NS in the zone
ns-1326.awsdns-37.org, ns-1904.awsdns-46.co.uk, ns-317.awsdns-39.com, ns-814.awsdns-37.net
NameserverAddressesNetwork (AS)Glue
ns-1326.awsdns-37.org205.251.197.46 2600:9000:5305:2e00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1904.awsdns-46.co.uk205.251.199.112 2600:9000:5307:7000::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-317.awsdns-39.com205.251.193.61 2600:9000:5301:3d00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-814.awsdns-37.net205.251.195.46 2600:9000:5303:2e00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1326.awsdns-37.org, ns-1904.awsdns-46.co.uk, ns-317.awsdns-39.com, ns-814.awsdns-37.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-1326.awsdns-37.org 205.251.197.46NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1326.awsdns-37.org 2600:9000:5305:2e00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1904.awsdns-46.co.uk 205.251.199.112NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1904.awsdns-46.co.uk 2600:9000:5307:7000::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-317.awsdns-39.com 205.251.193.61NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-317.awsdns-39.com 2600:9000:5301:3d00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-814.awsdns-37.net 205.251.195.46NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-814.awsdns-37.net 2600:9000:5303:2e00::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

pass

serial 1 · primary ns-814.awsdns-37.net

Found

Primary (MNAME)
ns-814.awsdns-37.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

NameserverSerial
ns-1326.awsdns-37.org (205.251.197.46)1
ns-1326.awsdns-37.org (2600:9000:5305:2e00::1)1
ns-1904.awsdns-46.co.uk (205.251.199.112)1
ns-1904.awsdns-46.co.uk (2600:9000:5307:7000::1)1
ns-317.awsdns-39.com (205.251.193.61)1
ns-317.awsdns-39.com (2600:9000:5301:3d00::1)1
ns-814.awsdns-37.net (205.251.195.46)1
ns-814.awsdns-37.net (2600:9000:5303:2e00::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-814.awsdns-37.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

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
22 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
1660ECDSAP256SHA256 (13)SHA256 8C78E40B3C24B5B0…yes

DNSKEY in the zone

Key tagRoleAlgorithm
9880ZSK (256)ECDSAP256SHA256 (13)
58987ZSK (256)ECDSAP256SHA256 (13)
1660KSK (257)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 1660 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 2h0m0s and created on demand; the current one was made at 2026-10-21 23:23 UTC and expires at 2026-10-22 01:38 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

warn

14 records at the apex

Found

Read from
205.251.197.46:53
TypeValueTTL
SOAns-814.awsdns-37.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1326.awsdns-37.org.172800
NSns-1904.awsdns-46.co.uk.172800
NSns-317.awsdns-39.com.172800
NSns-814.awsdns-37.net.172800
A76.76.21.21180
MX5 sparwelt-de.mail.protection.outlook.com.60
TXT"anthropic-domain-verification-8by90z=ZsY7rC6H9v9dS3n6NEVRr3YcT"300
TXT"apple-domain-verification=GVvz8wy2lp38bjLP"300
TXT"atlassian-domain-verification=Likte3UtxVzUVSX19sLG3R4p4AZb8acYzjIxY4tvYvEaxuK4XXmWH5/bDBc1PBlB"300
TXT"facebook-domain-verification=gjx8bzsfynlqwmegem8j9pvu4wzcor"300
TXT"google-site-verification=G1Bgkj5QlidYBhaf_DkTQ2BkxQEe_7oF8WU6vmfMMQ4"300
TXT"google-site-verification=L3U-4FmnDF0slquxLzixj7oEYx8GV9oZH9g0CQjQbBA"300
TXT"v=spf1 ip4:213.61.69.122/32 ip4:212.45.106.160/27 ip4:193.169.180.0/23 ip4:192.166.197.0/24 ip4:78.46.118.0/24 ip4:213.61.227.3 ip4:81.169.212.14 include:spf.protection.outlook.com include:sparkpostmail.com include:amazonses.com -all"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (3m), MX (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