we-online.de

Checked 22 October 2026, 01:00 UTC · via 8.8.8.8
!Passed with warnings
21 passed 2 warnings 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

ns2.xc-ns.de, ns5.xc-ns.de

Found

Parent zone
de
Delegation from
a.nic.de (194.0.0.53)
NS at the parent
ns2.xc-ns.de, ns5.xc-ns.de
NS in the zone
ns2.xc-ns.de, ns5.xc-ns.de
NameserverAddressesNetwork (AS)Glue
ns2.xc-ns.de193.227.117.225 2a04:2b00:14cc::225AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT193.227.117.225 2a04:2b00:14cc::225
ns5.xc-ns.de194.50.187.225 2a04:2b00:14dd::225AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT194.50.187.225 2a04:2b00:14dd::225

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns2.xc-ns.de, ns5.xc-ns.de.
    #6
  • ✓ 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 2 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS1921 (RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT): 4 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .de
    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

info

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns2.xc-ns.de 193.227.117.225NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns2.xc-ns.de 2a04:2b00:14cc::225NOERROR, 4 ms, authoritativenoyes / yesrefusedRcodeZero DNS
ns5.xc-ns.de 194.50.187.225NOERROR, 13 ms, authoritativenoyes / yesrefusedreg-wie1
ns5.xc-ns.de 2a04:2b00:14dd::225NOERROR, 13 ms, authoritativenoyes / yesrefusedreg-wie1

Checks

  • ✓ All respond #14
    All 4 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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: ns2.xc-ns.de: "RcodeZero DNS"; ns5.xc-ns.de: "reg-wie1".
    #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

warn

serial 2026093001 · primary ns2.xc-ns.de

Found

Primary (MNAME)
ns2.xc-ns.de
Contact (RNAME)
tech.domainexperten.de
Serial
2026093001
Refresh / retry
86400 s / 7200 s
Expire
3600000 s
Negative TTL
172800 s

Serial per nameserver

NameserverSerial
ns2.xc-ns.de (193.227.117.225)2026093001
ns2.xc-ns.de (2a04:2b00:14cc::225)2026093001
ns5.xc-ns.de (194.50.187.225)2026093001
ns5.xc-ns.de (2a04:2b00:14dd::225)2026093001

Checks

  • ✓ Serial 2026093001 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 2d is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1d, retry 2h, expire 1000h, negative TTL 2d.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns2.xc-ns.de is one of the listed nameservers.
  • ✓ Contact tech@domainexperten.de #25
    The SOA RNAME tech.domainexperten.de means tech@domainexperten.de.
  • ✓ Date-based serial #26
    The serial 2026093001 follows the YYYYMMDDnn convention (2026-09-30).

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

pass

15 records at the apex

Found

Read from
193.227.117.225:53
TypeValueTTL
SOAns2.xc-ns.de. tech.domainexperten.de. 2026093001 86400 7200 3600000 1728003600
NSns2.xc-ns.de.3600
NSns5.xc-ns.de.3600
A185.101.4.413600
MX20 smtp11.witglobal.net.3600
MX20 smtp21.witglobal.net.3600
TXT"knowbe4-site-verification=66dd1669b78910ae1bc3b911b16c845d"3600
TXT"google-site-verification=PUu8-3hsOxlvDF5oauF01oiHnpkcwELNHcgXw-GQQPE"3600
TXT"xHd07KeclvDaoA2ii4xZzNIuXRkeneh5WVoL2AiTjDDwQuxA+vxmyFA7sDxkRyHcLSgH02X1P8MfUwi+1Q+AxQ=="3600
TXT"cisco-ci-domain-verification=572bee2b0c863d11ff0245c9b52c82f67e144861bcee5936daf4f76cf79be2aa"3600
TXT"atlassian-domain-verification=qg9ggBtWFZasD1ksGF2iXnSrGB0t7dq9cOpP5JoKgqAOinu7cwdhss8ogqOV/OJZ"3600
TXT"v=spf1 a:mail.fp-sign.com include:limajo.witglobal.net include:_spf.senders.dc.aeb.com a:vwp16062.webpack.hosteurope.de a:smarthost.ximantix.com ip4:195.140.184.0/22 ip4:91.192.40.0/22 ip4:91.222.98.0/24 ip4:91.222.96.0/24 ip4:178.77.111.91 ip4:87.128.218" ".232 ip4:62.159.37.142 ip6:2a01:488:42:1000:b24d:6f5b:: include:_spf-i.cegedim.fr include:_spf-e.cegedim.fr include:spf.imc-hosting.com include:amazonses.com -all"3600
CAA0 issue "digicert.com"3600
CAA0 issue "letsencrypt.org"3600
CAA0 issue "sectigo.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1h, NS 1h. The NS TTL at the parent is 1d and in the zone 1h; resolvers may use either.
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • ✓ No wildcard #34
    Names that don't exist return NXDOMAIN.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: digicert.com, letsencrypt.org, sectigo.com.