sigma.nl

Checked 22 October 2026, 15:50 UTC · via 8.8.8.8
!Passed with warnings
20 passed 3 warnings 0 failed 6 info

Registration

info

.nl country-code

Found

TLD
.nl (country-code)
ICANN policies apply
no
Lookup error: https://rdap.sidn.nl/domain/sigma.nl returned HTTP 429

Checks

  • i
    .nl 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
    .nl is delegated in the root zone and DNSSEC-signed.
  • i
    Could not be checked
    The RDAP lookup failed, so this could not be checked: https://rdap.sidn.nl/domain/sigma.nl returned HTTP 429
    #3

Delegation

warn

dns1.ladasdomains.com, dns2.ladasdomains.com, dns3.ladasdomains.com

Found

Parent zone
nl
Delegation from
ns1.dns.nl (194.0.28.53)
NS at the parent
dns1.ladasdomains.com, dns2.ladasdomains.com, dns3.ladasdomains.com
NS in the zone
dns1.ladasdomains.com, dns2.ladasdomains.com, dns3.ladasdomains.com
NameserverAddressesNetwork (AS)Glue
dns1.ladasdomains.com194.50.187.180AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
dns2.ladasdomains.com194.0.182.168AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-
dns3.ladasdomains.com193.227.117.193AS1921 RCODEZERO-ANYCAST-SEC1-TLD - ipcom GmbH, AT-

Checks

  • ✓ 3 nameservers #6
    Delegated to dns1.ladasdomains.com, dns2.ladasdomains.com, dns3.ladasdomains.com.
  • ✓ 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 0 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): 3 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

info

3 of 3 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dns1.ladasdomains.com 194.50.187.180NOERROR, 12 ms, authoritativenoyes / yesrefusedreg-wie1
dns2.ladasdomains.com 194.0.182.168NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS
dns3.ladasdomains.com 193.227.117.193NOERROR, 3 ms, authoritativenoyes / yesrefusedRcodeZero DNS

Checks

  • ✓ All respond #14
    All 3 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: dns1.ladasdomains.com: "reg-wie1"; dns2.ladasdomains.com: "RcodeZero DNS"; dns3.ladasdomains.com: "RcodeZero DNS".
    #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 2026100301 · primary dns1.ladasdomains.com

Found

Primary (MNAME)
dns1.ladasdomains.com
Contact (RNAME)
tech.brandshelter.com
Serial
2026100301
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
dns1.ladasdomains.com (194.50.187.180)2026100301
dns2.ladasdomains.com (194.0.182.168)2026100301
dns3.ladasdomains.com (193.227.117.193)2026100301

Checks

  • ✓ Serial 2026100301 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver dns1.ladasdomains.com is one of the listed nameservers.
  • ✓ Contact tech@brandshelter.com #25
    The SOA RNAME tech.brandshelter.com means tech@brandshelter.com.
  • ✓ Date-based serial #26
    The serial 2026100301 follows the YYYYMMDDnn convention (2026-10-03).

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

13 records at the apex

Found

Read from
194.50.187.180:53
TypeValueTTL
SOAdns1.ladasdomains.com. tech.brandshelter.com. 2026100301 10800 3600 604800 300300
NSdns2.ladasdomains.com.3600
NSdns3.ladasdomains.com.3600
NSdns1.ladasdomains.com.3600
A151.101.129.24260
A151.101.65.24260
A151.101.1.24260
A151.101.193.24260
MX10 mx-02.mail-forwarder.io.600
MX10 mx-01.mail-forwarder.io.600
TXT"_7cqfcz7p51u706lqyuo9c2xedhunt9l"3600
TXT"v=spf1 include:_spf.salesforce.com a:ns3436198.ip-46-105-104.eu ip4:62.250.3.58 ip4:184.106.224.21 ip4:62.250.3.110 ip4:46.105.104.173 a:Fallback.hmscontactcenters.nl include:mailgun.org ip4:213.239.137.71 ip4:231.239.137.71 ~all"3600
TXT"_mnxo4ao1awwhi3xdfps7p75g8aa2cje"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change.
    #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