skillsyouneed.com

Checked 22 October 2026, 10:43 UTC · via 8.8.8.8
!Passed with warnings
23 passed 4 warnings 0 failed 4 info

Registration

info

.com generic · Netistrar Limited · expires 2032-08-26

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Netistrar Limited
Registered
26 August 2005
Last changed
14 August 2023
Expires
26 August 2032
Status
client delete prohibited, client transfer prohibited
Registry nameservers
ns1.krystal.co.uk, ns2.krystal.co.uk
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 2032-08-26 #3
    The registration is valid until 2032-08-26 (2135 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

warn

ns1.krystal.co.uk, ns2.krystal.co.uk

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.krystal.co.uk, ns2.krystal.co.uk
NS in the zone
ns1.krystal.uk, ns2.krystal.uk
NameserverAddressesNetwork (AS)Glue
ns1.krystal.co.uk (parent only)77.72.0.11AS12488 KRYSTAL - Krystal Hosting Ltd, GB-
ns1.krystal.uk (zone only)77.72.0.11AS12488 KRYSTAL - Krystal Hosting Ltd, GB-
ns2.krystal.co.uk (parent only)139.162.230.184AS63949 AKAMAI-LINODE-AP - Akamai Connected Cloud, SG-
ns2.krystal.uk (zone only)139.162.230.184AS63949 AKAMAI-LINODE-AP - Akamai Connected Cloud, SG-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.krystal.co.uk, ns2.krystal.co.uk.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns1.krystal.co.uk, ns2.krystal.co.uk; only in the zone: ns1.krystal.uk, ns2.krystal.uk. ns1.krystal.co.uk, ns1.krystal.uk, ns2.krystal.co.uk, ns2.krystal.uk report NS ns1.krystal.uk ns2.krystal.uk.
    #7
  • ✓ 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 0 IPv6 /48s.
  • ✓ 2 autonomous systems #11
    The nameservers are spread over: AS12488 (KRYSTAL - Krystal Hosting Ltd, GB): 2 addresses; AS63949 (AKAMAI-LINODE-AP - Akamai Connected Cloud, SG): 2 addresses.
  • i
    All nameserver names under .uk
    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

warn

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.krystal.co.uk 77.72.0.11NOERROR, 15 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)
ns1.krystal.uk 77.72.0.11NOERROR, 14 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)
ns2.krystal.co.uk 139.162.230.184NOERROR, 16 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)
ns2.krystal.uk 139.162.230.184NOERROR, 18 ms, authoritativenoyes / yesrefusedPowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)

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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: ns1.krystal.co.uk: "PowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)"; ns1.krystal.uk: "PowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)"; ns2.krystal.co.uk: "PowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)"; ns2.krystal.uk: "PowerDNS Authoritative Server 4.9.17 (built Aug 10 2026 00:00:00 by root@bh-centos-9.dev.cpanel.net)". 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 2026083001 · primary ns1.krystal.uk

Found

Primary (MNAME)
ns1.krystal.uk
Contact (RNAME)
admin.k-validator-valerii-lon.krystal.uk
Serial
2026083001
Refresh / retry
3600 s / 1800 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.krystal.co.uk (77.72.0.11)2026083001
ns1.krystal.uk (77.72.0.11)2026083001
ns2.krystal.co.uk (139.162.230.184)2026083001
ns2.krystal.uk (139.162.230.184)2026083001

Checks

  • ✓ Serial 2026083001 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1h, retry 30m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.krystal.uk is one of the listed nameservers.
  • ✓ Contact admin@k-validator-valerii-lon.krystal.uk #25
    The SOA RNAME admin.k-validator-valerii-lon.krystal.uk means admin@k-validator-valerii-lon.krystal.uk.
  • ✓ Date-based serial #26
    The serial 2026083001 follows the YYYYMMDDnn convention (2026-08-30).

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

info

8 records at the apex

Found

Read from
77.72.0.11:53
TypeValueTTL
SOAns1.krystal.uk. admin.k-validator-valerii-lon.krystal.uk. 2026083001 3600 1800 1209600 8640086400
NSns2.krystal.uk.86400
NSns1.krystal.uk.86400
A77.72.2.453031
MX20 mx2.krystal.uk.3600
MX10 mx1.krystal.uk.3600
TXT"brevo-code:abbe179e6c72a160e16833d8890a485bv=spf1 ip4:77.72.2.45 ip4:77.72.2.194 a mx ip4:77.72.1.2 include:relay.k.io include:relay.mailchannels.net ~allgoogle-site-verification=20jxLGcSTEqAKtl3w652v36XSSfKlyb6BspC4Bux6FU"3600
TXT"v=spf1 ip4:77.72.2.45 ip4:77.72.2.194 a mx include:relay.k.io ~all"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 50m31s, MX 1h, NS 1d. The NS TTL at the parent is 2d and in the zone 1d; 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.
  • 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