kaercher.com

Checked 22 October 2026, 09:30 UTC · via 8.8.8.8
!Passed with warnings
24 passed 3 warnings 0 failed 4 info

Registration

info

.com generic · Gandi SAS · expires 2027-07-24

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Gandi SAS
Registered
25 July 1996
Last changed
19 June 2026
Expires
24 July 2027
Status
client transfer prohibited
Registry nameservers
ns1.kaercher.com, ns2.kaercher.com, ns3.kaercher.com, ns4.kaercher.com
RDAP server
https://rdap.verisign.com/com/v1/

Checks

  • i
    .com is a generic TLD (gTLD)
    Generic TLD under an ICANN registry agreement: ICANN-accredited registrars, UDRP and RDAP apply.
    #1
  • ✓ TLD delegated and signed #2
    .com is delegated in the root zone and DNSSEC-signed.
  • ✓ Expires on 2027-07-24 #3
    The registration is valid until 2027-07-24 (274 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns1.kaercher.com, ns2.kaercher.com, ns3.kaercher.com, ns4.kaercher.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.kaercher.com, ns2.kaercher.com, ns3.kaercher.com, ns4.kaercher.com
NS in the zone
ns1.kaercher.com, ns2.kaercher.com, ns3.kaercher.com, ns4.kaercher.com
NameserverAddressesNetwork (AS)Glue
ns1.kaercher.com205.251.194.136AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.194.136
ns2.kaercher.com205.251.197.51AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.197.51
ns3.kaercher.com205.251.192.104AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.104
ns4.kaercher.com205.251.199.136AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.199.136

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.kaercher.com, ns2.kaercher.com, ns3.kaercher.com, ns4.kaercher.com.
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns1.kaercher.com, ns2.kaercher.com, ns3.kaercher.com, ns4.kaercher.com.
  • ✓ 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 0 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., US): 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 .com
    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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

pass

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.kaercher.com 205.251.194.136NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns2.kaercher.com 205.251.197.51NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns3.kaercher.com 205.251.192.104NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns4.kaercher.com 205.251.199.136NOERROR, 9 ms, authoritativenoyes / yesrefused-

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.
  • ✓ 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 ns1.kaercher.com

Found

Primary (MNAME)
ns1.kaercher.com
Contact (RNAME)
dns\.admin.de.kaercher.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.kaercher.com (205.251.194.136)1
ns2.kaercher.com (205.251.197.51)1
ns3.kaercher.com (205.251.192.104)1
ns4.kaercher.com (205.251.199.136)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 ns1.kaercher.com is one of the listed nameservers.
  • ✓ Contact dns.admin@de.kaercher.com #25
    The SOA RNAME dns\.admin.de.kaercher.com means dns.admin@de.kaercher.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

36 records at the apex

Found

Read from
205.251.194.136:53
TypeValueTTL
SOAns1.kaercher.com. dns\.admin.de.kaercher.com. 1 7200 900 1209600 86400900
NSns1.kaercher.com.60
NSns2.kaercher.com.60
NSns3.kaercher.com.60
NSns4.kaercher.com.60
A3.160.150.5560
A3.160.150.9960
A3.160.150.5760
A3.160.150.4260
MX1 aspmx.l.google.com.60
MX10 alt3.aspmx.l.google.com.60
MX10 alt4.aspmx.l.google.com.60
MX5 alt1.aspmx.l.google.com.60
MX5 alt2.aspmx.l.google.com.60
TXT"1IxhpXciH5bPq6MUCQsSGjqI4lpeysXBRDYcYxuaIVPJmTajtcjjiYmLeGABZ0TzGmV6TJJJLnxajmUUWSVXrw=="3600
TXT"E0N4T52045"3600
TXT"MS=ms73457126"3600
TXT"ZOOM_verify_joGt2oR2Qv6wg5bzjmJWkw"3600
TXT"adobe-idp-site-verification=0d927fa1-03c9-46f6-8612-ecc1e8b90ce5"3600
TXT"adobe-sign-verification=4c159cfc1c833d048dfc5b24ad32e454"3600
TXT"apple-domain-verification=nKiL6gm9FUZJsAnB"3600
TXT"atlassian-domain-verification=1A2ayoepe73AsHLApI/4JJRyANLXdEJmKsRiRqvxzahphZJ6VVcnurRAwBBffMSM"3600
TXT"cisco-ci-domain-verification=3c2bdbc5c899e6d55bdb87bd26456f9367cc5028e41918347836903393acc690"3600
TXT"ciscocidomainverification=71e4fb113d05451db6a11f31dff7daa5d401e8f767744e47bab74246f9fd7c92"3600
TXT"google-site-verification=55gb8jktFGyna4BGk8fQvkqqISrqIH4hj7UNGPDoJlw"3600
TXT"google-site-verification=CQxmDc1Q5sn1yoYZLG-lLSrSsFkWXFSlVaqHFfObXck"3600
TXT"google-site-verification=DunOMq72yk0A0GkQp1eGOx4-1pc5Y6xuIMh8MD-D-fQ"3600
TXT"google-site-verification=c-LDyYt1C02iLS_UmkUpTGdM9Adgz5q746R3lDY_jAo"3600
TXT"google-site-verification=rJlz-Z4lYlhNrsAJXBD9KEpoZwqLTtyf8IHXmWJzAOQ"3600
TXT"google-site-verification=wVf4IV7P7a7gmZ-HVS-NSD9WFk6QWbsAYGh--eNWtg8"3600
TXT"miro-verification=303d4e515a207dc97d03f5f8dca82977a30e017b"3600
TXT"new-relic-domain-verification=a3d5d11546ba47909170f340f9528aab"3600
TXT"shopify-verification-code=u1LtGizEWQ2MeAzsskEqxxsgD5wYEy"3600
TXT"v=spf1 redirect=_spf.kaercher.com"3600
TXT"webexdomainverification.B5VN=d081927f-e58c-4f68-9235-ec3456760656"3600
TXT"wisepops-site-verification=6c95ba48-4a09-4a2a-b733-db1dea236673"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), MX (1m), NS (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1m; 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