starwoodhotels.com

Checked 22 October 2026, 10:51 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 0 failed 5 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2026-12-22

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
23 December 1997
Last changed
23 December 2025
Expires
22 December 2026
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns19.domaincontrol.com, ns20.domaincontrol.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 2026-12-22 #3
    The registration is valid until 2026-12-22 (60 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns19.domaincontrol.com, ns20.domaincontrol.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns19.domaincontrol.com, ns20.domaincontrol.com
NS in the zone
ns19.domaincontrol.com, ns20.domaincontrol.com
NameserverAddressesNetwork (AS)Glue
ns19.domaincontrol.com97.74.109.10 2603:5:21d0::aAS44273 GODADDY-DNS - Host Europe GmbH, DE AS44273 GODADDY-DNS - Host Europe GmbH, DE2603:5:21d0::a 97.74.109.10
ns20.domaincontrol.com173.201.77.10 2603:5:22d0::aAS44273 GODADDY-DNS - Host Europe GmbH, DE AS44273 GODADDY-DNS - Host Europe GmbH, DE173.201.77.10 2603:5:22d0::a

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns19.domaincontrol.com, ns20.domaincontrol.com.
    #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 (AS44273 (GODADDY-DNS - Host Europe GmbH, DE): 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns19.domaincontrol.com 97.74.109.10NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns19.domaincontrol.com 2603:5:21d0::aNOERROR, 4 ms, authoritativenoyes / yesrefused-
ns20.domaincontrol.com 173.201.77.10NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns20.domaincontrol.com 2603:5:22d0::aNOERROR, 4 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 2026100202 · primary ns19.domaincontrol.com

Found

Primary (MNAME)
ns19.domaincontrol.com
Contact (RNAME)
dns.jomax.net
Serial
2026100202
Refresh / retry
28800 s / 7200 s
Expire
604800 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
ns19.domaincontrol.com (97.74.109.10)2026100202
ns19.domaincontrol.com (2603:5:21d0::a)2026100202
ns20.domaincontrol.com (173.201.77.10)2026100202
ns20.domaincontrol.com (2603:5:22d0::a)2026100202

Checks

  • ✓ Serial 2026100202 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 8h, retry 2h, expire 7d, negative TTL 10m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns19.domaincontrol.com is one of the listed nameservers.
  • ✓ Contact dns@jomax.net #25
    The SOA RNAME dns.jomax.net means dns@jomax.net.
  • ✓ Date-based serial #26
    The serial 2026100202 follows the YYYYMMDDnn convention (2026-10-02).

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

15 records at the apex

Found

Read from
97.74.109.10:53
TypeValueTTL
SOAns19.domaincontrol.com. dns.jomax.net. 2026100202 28800 7200 604800 6003600
NSns20.domaincontrol.com.3600
NSns19.domaincontrol.com.3600
A142.44.217.176600
MX5 mxa-003bff01.gslb.pphosted.com.3600
MX5 mxb-003bff01.gslb.pphosted.com.3600
TXT"MS=ms92953718"3600
TXT"nr1inkec1ksrrlo0q56aanqabk"3600
TXT"knowbe4-site-verification=eba42767c35aaaef10479f23af976f27"3600
TXT"v=spf1 include:spf-003bff01.pphosted.com include:spf.protection.outlook.com ip4:65.118.252.64/27 ip4:68.15.235.14 ip4:68.15.235.15 ip4:68.15.235.16 ip4:68.15.235.17 ip4:168.245.57.57 ip4:50.31.38.19 ip4:167.89.18.211 include:mail.zendesk.com include:sendg" "rid.net include:spf.mandrillapp.com include:spf.vsrv.host ~all"3600
TXT"n8t8rb7hquoovnb2o47gsbmc2k"3600
TXT"canva-site-verification=6XFb6UHCPGsuhyIu4MJDjg"3600
TXT"anthropic-domain-verification-xmhwj1=InGMOM6P0otnYqpxDcLm2tMEB"3600
TXT"openai-domain-verification=dv-LpEu37usfvmtDBFjveBLOFWy"3600
TXT"apple-domain-verification=TF1pZoFY8GdGUWn1"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, 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.
  • ✓ 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