sherwin-williams.com

Checked 22 October 2026, 10:41 UTC · via 8.8.8.8
!Passed with warnings
25 passed 1 warning 0 failed 5 info

Registration

info

.com generic · GoDaddy Corporate Domains, LLC · expires 2027-01-05

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy Corporate Domains, LLC
Registered
6 January 1998
Last changed
6 December 2025
Expires
5 January 2027
Status
client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers
ns1.f5clouddns.com, ns2.f5clouddns.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 2027-01-05 #3
    The registration is valid until 2027-01-05 (74 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

ns1.f5clouddns.com, ns2.f5clouddns.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.f5clouddns.com, ns2.f5clouddns.com
NS in the zone
ns1.f5clouddns.com, ns2.f5clouddns.com
NameserverAddressesNetwork (AS)Glue
ns1.f5clouddns.com107.162.234.197 2604:e180:1071::3:1AS55002 DEFENSE-NET - F5, Inc., US AS55002 DEFENSE-NET - F5, Inc., US107.162.234.197 2604:e180:1071::3:1
ns2.f5clouddns.com107.162.176.221 2604:e180:1071::ffff:6ba2:b0ddAS55002 DEFENSE-NET - F5, Inc., US AS55002 DEFENSE-NET - F5, Inc., US107.162.176.221 2604:e180:1071::ffff:6ba2:b0dd

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.f5clouddns.com, ns2.f5clouddns.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.
  • i
    One address family in one network
    all IPv6 addresses are in 2604:e180:1071::/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 (AS55002 (DEFENSE-NET - F5, 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
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

4 of 4 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.f5clouddns.com 107.162.234.197NOERROR, 18 ms, authoritativenoyes / yesrefused-
ns1.f5clouddns.com 2604:e180:1071::3:1NOERROR, 170 ms, authoritativenoyes / yesrefused-
ns2.f5clouddns.com 107.162.176.221NOERROR, 11 ms, authoritativenoyes / yesrefused-
ns2.f5clouddns.com 2604:e180:1071::ffff:6ba2:b0ddNOERROR, 23 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 2023114453 · primary ns1.f5clouddns.com

Found

Primary (MNAME)
ns1.f5clouddns.com
Contact (RNAME)
f5xc-dns.f5.com
Serial
2023114453
Refresh / retry
14400 s / 3600 s
Expire
2592000 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.f5clouddns.com (107.162.234.197)2023114453
ns1.f5clouddns.com (2604:e180:1071::3:1)2023114453
ns2.f5clouddns.com (107.162.176.221)2023114453
ns2.f5clouddns.com (2604:e180:1071::ffff:6ba2:b0dd)2023114453

Checks

  • ✓ Serial 2023114453 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 4h, retry 1h, expire 30d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.f5clouddns.com is one of the listed nameservers.
  • ✓ Contact f5xc-dns@f5.com #25
    The SOA RNAME f5xc-dns.f5.com means f5xc-dns@f5.com.
  • ✓ Timestamp serial #26
    The serial 2023114453 is a Unix timestamp (2034-02-09 16:14 UTC).

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

pass

24 records at the apex

Found

Read from
107.162.234.197:53
TypeValueTTL
SOAns1.f5clouddns.com. f5xc-dns.f5.com. 2023114453 14400 3600 2592000 30014400
NSns1.f5clouddns.com.86400
NSns2.f5clouddns.com.86400
A148.141.109.3614400
MX20 emhost65.sherwin.com.14400
MX10 emhost64.sherwin.com.14400
MX10 emhost61.sherwin.com.14400
MX10 emhost63.sherwin.com.14400
MX10 emhost62.sherwin.com.14400
MX10 emhost60.sherwin.com.14400
TXT"facebook-domain-verification=i9s9xhjkp5s5o8yw5uip47z1qpvpp2"3600
TXT"Validity-Domain-Verification=Nt9wy8Ho/Jh/xqphiHfS3TGjuzw="3600
TXT"_2lnrf2pmfjlmhwofexgo6fkd9ec8fo8"3600
TXT"_dlzvu6pz4qhyjbfhgm4srj57g2h8vxb"3600
TXT"q9b39x4j8mqzr0f80jghb2t6jh957rrz"3600
TXT"v=spf1 mx ip4:148.141.0.0/16 include:spf.protection.outlook.com include:cust.wombatsecurity.com include:_spf.salesforce.com include:mailgun.org ~all"3600
TXT"blc48n6jg9p7d3j6n197wz98l5wvgsmc"3600
TXT"google-site-verification=TbExqt4s_6hNu_M7g8yvfLkJLHhbjZ6iEFj9FVaO-Ys"3600
TXT"heyhack-verification=232444f6-a086-4285-bc5b-6594f379323d"3600
TXT"MS=ms56811487"3600
CAA128 issue "entrust.net"3600
CAA128 issue "letsencrypt.org"3600
CAA128 issue "digicert.com"3600
CAA0 issue "awstrust.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 4h, MX 4h, 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: entrust.net, letsencrypt.org, digicert.com, awstrust.com.