watchguard.com

Checked 22 October 2026, 11:24 UTC · via 8.8.8.8
!Passed with warnings
26 passed 3 warnings 0 failed 2 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-05-21

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
20 May 1996
Last changed
28 April 2026
Expires
21 May 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns1.dnsimple-edge.com, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns4.dnsimple-edge.org
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 2027-05-21 #3
    The registration is valid until 2027-05-21 (210 days).
  • ✓ Transfer locked #4
    Registry status: client delete 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

warn

ns1.dnsimple-edge.com, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns4.dnsimple-edge.org

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.dnsimple-edge.com, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns4.dnsimple-edge.org
NS in the zone
ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com, ns4.dnsimple.com
NameserverAddressesNetwork (AS)Glue
ns1.dnsimple-edge.com (parent only)199.247.152.53 2620:111:8004::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US199.247.152.53 2620:111:8004::53
ns1.dnsimple.com (zone only)199.247.152.53 2620:111:8004::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US-
ns2.dnsimple-edge.net (parent only)199.247.153.53 2620:111:8005::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US-
ns2.dnsimple.com (zone only)199.247.153.53 2620:111:8005::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US-
ns3.dnsimple-edge.io (parent only)199.247.154.53 2620:111:8006::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US-
ns3.dnsimple.com (zone only)199.247.154.53 2620:111:8006::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US-
ns4.dnsimple-edge.org (parent only)199.247.155.53 2620:111:8007::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US-
ns4.dnsimple.com (zone only)199.247.155.53 2620:111:8007::53AS32771 DNSIMPLE - DNSimple Corporation, US AS32771 DNSIMPLE - DNSimple Corporation, US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns1.dnsimple-edge.com, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns4.dnsimple-edge.org.
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: ns1.dnsimple-edge.com, ns2.dnsimple-edge.net, ns3.dnsimple-edge.io, ns4.dnsimple-edge.org; only in the zone: ns1.dnsimple.com, ns2.dnsimple.com, ns3.dnsimple.com, ns4.dnsimple.com. ns1.dnsimple-edge.com, ns1.dnsimple.com, ns2.dnsimple-edge.net, ns2.dnsimple.com, ns3.dnsimple-edge.io, ns3.dnsimple.com, ns4.dnsimple-edge.org, ns4.dnsimple.com report NS ns1.dnsimple.com ns2.dnsimple.com ns3.dnsimple.com ns4.dnsimple.com.
    #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 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS32771 (DNSIMPLE - DNSimple Corporation, US): 16 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • ✓ Nameserver names under 4 TLDs #12
    Nameserver names use the TLDs .com, .io, .net, .org.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

16 of 16 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.dnsimple-edge.com 199.247.152.53NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1.dnsimple-edge.com 2620:111:8004::53NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns1.dnsimple.com 199.247.152.53NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns1.dnsimple.com 2620:111:8004::53NOERROR, 14 ms, authoritativenoyes / yesrefused-
ns2.dnsimple-edge.net 199.247.153.53NOERROR, 12 ms, authoritativenoyes / yesrefused-
ns2.dnsimple-edge.net 2620:111:8005::53NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns2.dnsimple.com 199.247.153.53NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns2.dnsimple.com 2620:111:8005::53NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns3.dnsimple-edge.io 199.247.154.53NOERROR, 14 ms, authoritativenoyes / yesrefused-
ns3.dnsimple-edge.io 2620:111:8006::53NOERROR, 14 ms, authoritativenoyes / yesrefused-
ns3.dnsimple.com 199.247.154.53NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns3.dnsimple.com 2620:111:8006::53NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns4.dnsimple-edge.org 199.247.155.53NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns4.dnsimple-edge.org 2620:111:8007::53NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns4.dnsimple.com 199.247.155.53NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns4.dnsimple.com 2620:111:8007::53NOERROR, 4 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 16 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 1522866736 · primary ns1.dnsimple.com

Found

Primary (MNAME)
ns1.dnsimple.com
Contact (RNAME)
admin.dnsimple.com
Serial
1522866736
Refresh / retry
86400 s / 7200 s
Expire
604800 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns1.dnsimple-edge.com (199.247.152.53)1522866736
ns1.dnsimple-edge.com (2620:111:8004::53)1522866736
ns1.dnsimple.com (199.247.152.53)1522866736
ns1.dnsimple.com (2620:111:8004::53)1522866736
ns2.dnsimple-edge.net (199.247.153.53)1522866736
ns2.dnsimple-edge.net (2620:111:8005::53)1522866736
ns2.dnsimple.com (199.247.153.53)1522866736
ns2.dnsimple.com (2620:111:8005::53)1522866736
ns3.dnsimple-edge.io (199.247.154.53)1522866736
ns3.dnsimple-edge.io (2620:111:8006::53)1522866736
ns3.dnsimple.com (199.247.154.53)1522866736
ns3.dnsimple.com (2620:111:8006::53)1522866736
ns4.dnsimple-edge.org (199.247.155.53)1522866736
ns4.dnsimple-edge.org (2620:111:8007::53)1522866736
ns4.dnsimple.com (199.247.155.53)1522866736
ns4.dnsimple.com (2620:111:8007::53)1522866736

Checks

  • ✓ Serial 1522866736 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 1d, retry 2h, expire 7d, negative TTL 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.dnsimple.com is one of the listed nameservers.
  • ✓ Contact admin@dnsimple.com #25
    The SOA RNAME admin.dnsimple.com means admin@dnsimple.com.
  • ✓ Timestamp serial #26
    The serial 1522866736 is a Unix timestamp (2018-04-04 18:32 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

warn

37 records at the apex

Found

Read from
199.247.152.53:53
TypeValueTTL
SOAns1.dnsimple.com. admin.dnsimple.com. 1522866736 86400 7200 604800 3003600
NSns1.dnsimple.com.3600
NSns2.dnsimple.com.3600
NSns3.dnsimple.com.3600
NSns4.dnsimple.com.3600
A54.212.248.1393600
MX10 mx-cluster-usa01.hornetsecurity.com.60
MX20 mx-cluster-usa02.hornetsecurity.com.60
MX30 mx-cluster-usa03.hornetsecurity.com.60
MX40 mx-cluster-usa04.hornetsecurity.com.60
TXT"1password-site-verification=L6NXOXCWAJG75PGFPQESJT4T4I"3600
TXT"2B2E9917D6FDBCA7BF8F0F174C5C14A7A48CD3"3600
TXT"2b2e9917d6fdbca7bf8f0f174c5c14a7a48cd31bdbbb043793a71e6c66e29c6d"3600
TXT"MS=ms63680124"3600
TXT"WHltrwc/Ph9llk5yJM+A/6uBawZP2HjOaq4mzEmwg54ijDXWQ7r5GXaCTu1uhPWzsHOT6av4n/7lyEuxwjILlA=="3600
TXT"ZiBhhEw2uQ7BtEaY1o2GAn5deU27V9zXTq+oXExVKA/Q29qRr2V5SG9/O8b0fVohcNVMTWmRfPEzQL2jlGyytQ=="3600
TXT"_v5xpsxxdp18whttaavqfe5b9kiiprid"3600
TXT"amazonses:fnH1maCPzl/v5sYkpCGSI9+/5OLGBQOJ1sYp0LwR2Ls="3600
TXT"anthropic-domain-verification-t5kcnj=lEOKXEJP4VKt1s5CSQi2D3Xkj"3600
TXT"apple-domain-verification=QIR77Zkh8Q8lkVoqoa1r59U8pbwjhNcw-Nt5uz5Fv48"3600
TXT"apple-domain-verification=hv7QgbvAapLaMxPg"3600
TXT"atlassian-domain-verification=VUBMgRjCYIAumfjeljqnkMNyBrEYC7rGn3nvEAHApy/aBiw1R7eOs3ooPIfuZsLP"3600
TXT"atlassian-sending-domain-verification=b0b4e582-f792-4853-a2c0-83c443566218"3600
TXT"cursor-domain-verification-dwpm76=tyAElN2AIy8FPw2QoQYcuKW6C"3600
TXT"fbtfphyp5yk7l0l33tnw5mgjkjrwgp9t"3600
TXT"h1-domain-verification=Z1fqikXoqjXZ6txtXadjvXCTYfpCC9BXgUXpJ7KxkuYWGc3f"3600
TXT"logmein-verification-code=868ef608-b692-4dff-aaaa-828814ea4124"3600
TXT"onetrust-domain-verification=d7680d9fcbda4778985e14c6826e561d"3600
TXT"p2cxrdj8hrf7t1n5pl76x43ndzqm8zz2"3600
TXT"pendo-domain-verification=14cf7a9f-0486-4731-8515-2124fc392405"3600
TXT"status-page-domain-verification=hd8tswrff13w"3600
TXT"v=spf1 include:watchguard_com._es.easydmarc.com -all"7200
CAA0 iodef "mailto:itoperations@watchguard.com"3600
CAA0 issue "amazon.com"3600
CAA0 issue "cloudflare.com"3600
CAA0 issue "digicert.com"3600
CAA0 issue "letsencrypt.org"3600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: MX (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1h; resolvers may use either.
    #32
  • ✓ 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: amazon.com, cloudflare.com, digicert.com, letsencrypt.org.