penexchange.de

Checked 21 October 2026, 23:42 UTC · via 8.8.8.8
!Passed with warnings
22 passed 1 warning 0 failed 6 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-155-b.gandi.net, ns-228-c.gandi.net, ns-23-a.gandi.net

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns-155-b.gandi.net, ns-228-c.gandi.net, ns-23-a.gandi.net
NS in the zone
ns-155-b.gandi.net, ns-228-c.gandi.net, ns-23-a.gandi.net
NameserverAddressesNetwork (AS)Glue
ns-155-b.gandi.net213.167.230.156 2001:4b98:aaab::9cAS29169 GANDI-AS - GANDI SAS, FR AS209453 GANDI-LIVEDNS - GANDI SAS, FR-
ns-228-c.gandi.net217.70.187.229 2604:3400:aaac::e5AS209453 GANDI-LIVEDNS - GANDI SAS, FR AS209453 GANDI-LIVEDNS - GANDI SAS, FR-
ns-23-a.gandi.net173.246.100.24 2001:4b98:aaaa::18AS209453 GANDI-LIVEDNS - GANDI SAS, FR AS209453 GANDI-LIVEDNS - GANDI SAS, FR-

Checks

  • ✓ 3 nameservers #6
    Delegated to ns-155-b.gandi.net, ns-228-c.gandi.net, ns-23-a.gandi.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 3 IPv4 /24s and 3 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS209453 (GANDI-LIVEDNS - GANDI SAS, FR): 5 addresses; AS29169 (GANDI-AS - GANDI SAS, FR): 1 address.
  • i
    All nameserver names under .net
    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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-155-b.gandi.net 213.167.230.156NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-155-b.gandi.net 2001:4b98:aaab::9cNOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-228-c.gandi.net 217.70.187.229NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-228-c.gandi.net 2604:3400:aaac::e5NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-23-a.gandi.net 173.246.100.24NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-23-a.gandi.net 2001:4b98:aaaa::18NOERROR, 4 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 6 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

info

serial 1792022400 · primary ns1.gandi.net

Found

Primary (MNAME)
ns1.gandi.net
Contact (RNAME)
hostmaster.gandi.net
Serial
1792022400
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
10800 s

Serial per nameserver

NameserverSerial
ns-155-b.gandi.net (213.167.230.156)1792022400
ns-155-b.gandi.net (2001:4b98:aaab::9c)1792022400
ns-228-c.gandi.net (217.70.187.229)1792022400
ns-228-c.gandi.net (2604:3400:aaac::e5)1792022400
ns-23-a.gandi.net (173.246.100.24)1792022400
ns-23-a.gandi.net (2001:4b98:aaaa::18)1792022400

Checks

  • ✓ Serial 1792022400 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 3h.
  • i
    Hidden master
    The primary nameserver ns1.gandi.net 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@gandi.net #25
    The SOA RNAME hostmaster.gandi.net means hostmaster@gandi.net.
  • ✓ Timestamp serial #26
    The serial 1792022400 is a Unix timestamp (2026-10-15 00:00 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

7 records at the apex

Found

Read from
213.167.230.156:53
TypeValueTTL
SOAns1.gandi.net. hostmaster.gandi.net. 1792022400 10800 3600 604800 1080010800
NSns-228-c.gandi.net.10800
NSns-23-a.gandi.net.10800
NSns-155-b.gandi.net.10800
A151.106.64.19610800
MX10 mxa-0031f501.gslb.pphosted.com.10800
MX20 mxb-0031f501.gslb.pphosted.com.10800

Checks

  • ✓ TTLs within range #32
    TTLs: A 3h, MX 3h, NS 3h. The NS TTL at the parent is 1d and in the zone 3h; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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