karger.com

Checked 22 October 2026, 09:31 UTC · via 8.8.8.8
!Passed with warnings
22 passed 1 warning 0 failed 8 info

Registration

info

.com generic · Inic GmbH · expires 2028-06-11

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Inic GmbH
Registered
12 June 1997
Last changed
25 February 2023
Expires
11 June 2028
Status
active
Registry nameservers
dns41.cloudns.net, dns42.cloudns.net, dns43.cloudns.net, dns44.cloudns.net
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 2028-06-11 #3
    The registration is valid until 2028-06-11 (597 days).
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

dns41.cloudns.net, dns42.cloudns.net, dns43.cloudns.net, dns44.cloudns.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dns41.cloudns.net, dns42.cloudns.net, dns43.cloudns.net, dns44.cloudns.net
NS in the zone
dns41.cloudns.net, dns42.cloudns.net, dns43.cloudns.net, dns44.cloudns.net
NameserverAddressesNetwork (AS)Glue
dns41.cloudns.net185.136.96.200 2a06:fb00:1::1:200AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
dns42.cloudns.net185.136.97.200 2a06:fb00:1::2:200AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
dns43.cloudns.net185.136.98.200 2a06:fb00:1::3:200AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-
dns44.cloudns.net185.136.99.200 2a06:fb00:1::4:200AS203391 CLOUDNSNET - Cloud DNS Ltd, BG AS203391 CLOUDNSNET - Cloud DNS Ltd, BG-

Checks

  • ✓ 4 nameservers #6
    Delegated to dns41.cloudns.net, dns42.cloudns.net, dns43.cloudns.net, dns44.cloudns.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.
  • i
    One address family in one network
    all IPv6 addresses are in 2a06:fb00:1::/48, while the other address family is spread over several networks.
    #10
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS203391 (CLOUDNSNET - Cloud DNS Ltd, BG): 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
  • 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

info

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns41.cloudns.net 185.136.96.200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns41.cloudns.net 2a06:fb00:1::1:200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns42.cloudns.net 185.136.97.200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns42.cloudns.net 2a06:fb00:1::2:200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns43.cloudns.net 185.136.98.200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns43.cloudns.net 2a06:fb00:1::3:200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns44.cloudns.net 185.136.99.200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14
dns44.cloudns.net 2a06:fb00:1::4:200NOERROR, 4 ms, authoritativenoyes / yesrefusedde3-14

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.
  • i
    Identifying string disclosed
    These nameservers answer version queries with a string that is not a version number: dns41.cloudns.net: "de3-14"; dns42.cloudns.net: "de3-14"; dns43.cloudns.net: "de3-14"; dns44.cloudns.net: "de3-14".
    #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 2026051101 · primary dns41.cloudns.net

Found

Primary (MNAME)
dns41.cloudns.net
Contact (RNAME)
support.cloudns.net
Serial
2026051101
Refresh / retry
7200 s / 1800 s
Expire
1209600 s
Negative TTL
3600 s

Serial per nameserver

NameserverSerial
dns41.cloudns.net (185.136.96.200)2026051101
dns41.cloudns.net (2a06:fb00:1::1:200)2026051101
dns42.cloudns.net (185.136.97.200)2026051101
dns42.cloudns.net (2a06:fb00:1::2:200)2026051101
dns43.cloudns.net (185.136.98.200)2026051101
dns43.cloudns.net (2a06:fb00:1::3:200)2026051101
dns44.cloudns.net (185.136.99.200)2026051101
dns44.cloudns.net (2a06:fb00:1::4:200)2026051101

Checks

  • ✓ Serial 2026051101 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 30m, expire 14d, negative TTL 1h.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns41.cloudns.net is one of the listed nameservers.
  • ✓ Contact support@cloudns.net #25
    The SOA RNAME support.cloudns.net means support@cloudns.net.
  • ✓ Date-based serial #26
    The serial 2026051101 follows the YYYYMMDDnn convention (2026-05-11).

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

21 records at the apex

Found

Read from
185.136.96.200:53
TypeValueTTL
SOAdns41.cloudns.net. support.cloudns.net. 2026051101 7200 1800 1209600 36003600
NSdns43.cloudns.net.3600
NSdns41.cloudns.net.3600
NSdns44.cloudns.net.3600
NSdns42.cloudns.net.3600
A104.18.12.1793600
A104.18.13.1793600
AAAA2606:4700::6812:cb33600
AAAA2606:4700::6812:db33600
MX5 karger-com.mail.protection.outlook.com.3600
TXT"v=spf1 include:_spf.karger_com._d.easydmarc.pro ~all"3600
TXT"QuoVadis=0a12298b-ff65-4e36-b6ec-b6ea364fd1d4"3600
TXT"DBE49FAD-CD41-40C9-BD73-9D2CA43FF859"3600
TXT"OsEg2PTFLtnuJJ4J4Vjyx2yt2oiYA3ehncKzzZ8DHuGlRJ92OZMx+TeLFtX+y3ljh9Vh1RaQTtalGsEos8cXPw=="3600
TXT"atlassian-domain-verification=7xhf977mUNoonSOV/EHPihTAW4XZDJJktUbpFAQwoyCihWrrGVtL39NuzJ9rb2RE"3600
TXT"digicert.com"3600
TXT"pardot925633=d4d8ec6e96692e248fba5e2dfe8be533e97f9f1fa9f8c2055634aed2f5588645"3600
TXT"www.digicert.com"3600
TXT"globalsign-domain-verification=A002658E94F596902743278A7DFC8D39"3600
TXT"lvyzvq214c102hv2vv3f4mbqghryc2g7"3600
TXT"sending_domain925633=f5f17f89c01169b057de061d3da0a81dec0969feb77775f36e992678fe983c64"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, MX 1h, NS 1h. The NS TTL at the parent is 2d and in the zone 1h; 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