momondo.de

Checked 21 October 2026, 23:30 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 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

blue.foundationdns.com, blue.foundationdns.net, blue.foundationdns.org

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
blue.foundationdns.com, blue.foundationdns.net, blue.foundationdns.org
NS in the zone
blue.foundationdns.com, blue.foundationdns.net, blue.foundationdns.org
NameserverAddressesNetwork (AS)Glue
blue.foundationdns.com108.162.198.1 162.159.60.1 172.64.40.1 2606:4700:57::6ca2:c601 2803:f800:52::a29f:3c01 2a06:98c1:56::ac40:2801AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
blue.foundationdns.net108.162.198.31 162.159.60.31 172.64.40.31 2a06:98c1:56::ac40:281f 2803:f800:52::a29f:3c1f 2606:4700:57::6ca2:c61fAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
blue.foundationdns.org162.159.60.61 172.64.40.61 108.162.198.61 2606:4700:57::6ca2:c63d 2803:f800:52::a29f:3c3d 2a06:98c1:56::ac40:283dAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • ✓ 3 nameservers #6
    Delegated to blue.foundationdns.com, blue.foundationdns.net, blue.foundationdns.org.
  • ✓ 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 3 IPv4 /24s and 3 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 18 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 3 TLDs #12
    Nameserver names use the TLDs .com, .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

18 of 18 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
blue.foundationdns.com 108.162.198.1NOERROR, 10 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.com 162.159.60.1NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.com 172.64.40.1NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.com 2606:4700:57::6ca2:c601NOERROR, 11 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.com 2803:f800:52::a29f:3c01NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.com 2a06:98c1:56::ac40:2801NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.net 108.162.198.31NOERROR, 10 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.net 162.159.60.31NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.net 172.64.40.31NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.net 2a06:98c1:56::ac40:281fNOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.net 2803:f800:52::a29f:3c1fNOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.net 2606:4700:57::6ca2:c61fNOERROR, 10 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.org 162.159.60.61NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.org 172.64.40.61NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.org 108.162.198.61NOERROR, 11 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.org 2606:4700:57::6ca2:c63dNOERROR, 12 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.org 2803:f800:52::a29f:3c3dNOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.0
blue.foundationdns.org 2a06:98c1:56::ac40:283dNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.0

Checks

  • ✓ All respond #14
    All 18 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: blue.foundationdns.com: "2026.10.0"; blue.foundationdns.net: "2026.10.0"; blue.foundationdns.org: "2026.10.0". 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.

SOA

pass

serial 2417502644 · primary blue.foundationdns.com

Found

Primary (MNAME)
blue.foundationdns.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417502644
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
blue.foundationdns.com (108.162.198.1)2417502644
blue.foundationdns.com (162.159.60.1)2417502644
blue.foundationdns.com (172.64.40.1)2417502644
blue.foundationdns.com (2606:4700:57::6ca2:c601)2417502644
blue.foundationdns.com (2803:f800:52::a29f:3c01)2417502644
blue.foundationdns.com (2a06:98c1:56::ac40:2801)2417502644
blue.foundationdns.net (108.162.198.31)2417502644
blue.foundationdns.net (162.159.60.31)2417502644
blue.foundationdns.net (172.64.40.31)2417502644
blue.foundationdns.net (2a06:98c1:56::ac40:281f)2417502644
blue.foundationdns.net (2803:f800:52::a29f:3c1f)2417502644
blue.foundationdns.net (2606:4700:57::6ca2:c61f)2417502644
blue.foundationdns.org (162.159.60.61)2417502644
blue.foundationdns.org (172.64.40.61)2417502644
blue.foundationdns.org (108.162.198.61)2417502644
blue.foundationdns.org (2606:4700:57::6ca2:c63d)2417502644
blue.foundationdns.org (2803:f800:52::a29f:3c3d)2417502644
blue.foundationdns.org (2a06:98c1:56::ac40:283d)2417502644

Checks

  • ✓ Serial 2417502644 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver blue.foundationdns.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2417502644 is a Unix timestamp (2046-08-10 08:30 UTC).

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

info

19 records at the apex

Found

Read from
108.162.198.1:53
TypeValueTTL
SOAblue.foundationdns.com. dns.cloudflare.com. 2417502644 10000 2400 604800 18001800
NSblue.foundationdns.net.86400
NSblue.foundationdns.org.86400
NSblue.foundationdns.com.86400
A151.101.129.293600
A151.101.1.293600
A151.101.65.293600
A151.101.193.293600
AAAA2a04:4e42:200::2853600
AAAA2a04:4e42:400::2853600
AAAA2a04:4e42:600::2853600
AAAA2a04:4e42::2853600
MX1 aspmx.l.google.com.86400
MX10 aspmx2.googlemail.com.86400
MX10 aspmx3.googlemail.com.86400
MX5 alt1.aspmx.l.google.com.86400
MX5 alt2.aspmx.l.google.com.86400
TXT"google-site-verification=Fjirm6pPtoOZaL8o4e7yJ7m0g4WNyF44nOwlN_Pvn8E"86400
TXT"v=spf1 include:_spf.google.com -all"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 1d, NS 1d.
  • ✓ 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