smartsheet.com

Checked 22 October 2026, 10:44 UTC · via 8.8.8.8
!Passed with warnings
28 passed 1 warning 0 failed 2 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2030-04-15

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
15 April 2001
Last changed
9 October 2021
Expires
15 April 2030
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns-1053.awsdns-03.org, ns-1673.awsdns-17.co.uk, ns-479.awsdns-59.com, ns-696.awsdns-23.net
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 2030-04-15 #3
    The registration is valid until 2030-04-15 (1271 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

info

ns-1053.awsdns-03.org, ns-1673.awsdns-17.co.uk, ns-479.awsdns-59.com, ns-696.awsdns-23.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1053.awsdns-03.org, ns-1673.awsdns-17.co.uk, ns-479.awsdns-59.com, ns-696.awsdns-23.net
NS in the zone
ns-1053.awsdns-03.org, ns-1673.awsdns-17.co.uk, ns-479.awsdns-59.com, ns-696.awsdns-23.net
NameserverAddressesNetwork (AS)Glue
ns-1053.awsdns-03.org205.251.196.29 2600:9000:5304:1d00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1673.awsdns-17.co.uk205.251.198.137 2600:9000:5306:8900::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-479.awsdns-59.com205.251.193.223 2600:9000:5301:df00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.223 2600:9000:5301:df00::1
ns-696.awsdns-23.net205.251.194.184 2600:9000:5302:b800::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1053.awsdns-03.org, ns-1673.awsdns-17.co.uk, ns-479.awsdns-59.com, ns-696.awsdns-23.net.
  • ✓ 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 4 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS16509 (AMAZON-02 - Amazon.com, Inc., US): 8 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, .net, .org, .uk.
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

pass

8 of 8 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns-1053.awsdns-03.org 205.251.196.29NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1053.awsdns-03.org 2600:9000:5304:1d00::1NOERROR, 5 ms, authoritativenoyes / yesrefused-
ns-1673.awsdns-17.co.uk 205.251.198.137NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1673.awsdns-17.co.uk 2600:9000:5306:8900::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-479.awsdns-59.com 205.251.193.223NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-479.awsdns-59.com 2600:9000:5301:df00::1NOERROR, 13 ms, authoritativenoyes / yesrefused-
ns-696.awsdns-23.net 205.251.194.184NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-696.awsdns-23.net 2600:9000:5302:b800::1NOERROR, 5 ms, authoritativenoyes / yesrefused-

Checks

  • ✓ All respond #14
    All 8 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 1 · primary ns-1673.awsdns-17.co.uk

Found

Primary (MNAME)
ns-1673.awsdns-17.co.uk
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1053.awsdns-03.org (205.251.196.29)1
ns-1053.awsdns-03.org (2600:9000:5304:1d00::1)1
ns-1673.awsdns-17.co.uk (205.251.198.137)1
ns-1673.awsdns-17.co.uk (2600:9000:5306:8900::1)1
ns-479.awsdns-59.com (205.251.193.223)1
ns-479.awsdns-59.com (2600:9000:5301:df00::1)1
ns-696.awsdns-23.net (205.251.194.184)1
ns-696.awsdns-23.net (2600:9000:5302:b800::1)1

Checks

  • ✓ Serial 1 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h, retry 15m, expire 14d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-1673.awsdns-17.co.uk is one of the listed nameservers.
  • ✓ Contact awsdns-hostmaster@amazon.com #25
    The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
  • ✓ Counter serial #26
    The serial 1 is a plain counter.

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

64 records at the apex

Found

Read from
205.251.196.29:53
TypeValueTTL
SOAns-1673.awsdns-17.co.uk. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1053.awsdns-03.org.900
NSns-1673.awsdns-17.co.uk.900
NSns-479.awsdns-59.com.900
NSns-696.awsdns-23.net.900
A151.101.130.191900
A151.101.2.191900
A151.101.194.191900
A151.101.66.191900
MX10 mxa-0099d701.gslb.pphosted.com.300
MX10 mxb-0099d701.gslb.pphosted.com.300
TXT"063a4dcb-0520-43f1-b0ad-4173a9dbbf3e"300
TXT"45gVPhssMnvb1WmSp622M57MXnpE5Tom"300
TXT"MS=D967CA80CF07AA2CDC3454F5F9F1ECC9D22FACD53600"300
TXT"MS=ms45766595"300
TXT"MS=ms68437763"300
TXT"MS=ms80059158"300
TXT"UX5-KQ8-TF9"300
TXT"adobe-idp-site-verification=56404acead9fe2b15256656a6bd53b05222f0bc35547b6556fe7336e331e6e47"300
TXT"anthropic-domain-verification-hxh7sf=oVyTwviNxbjr6AmbAMsL6cJHn"300
TXT"apple-domain-verification=CSe6pGKtADzd2u5v"300
TXT"atlassian-domain-verification=XtjxmKlbTXQpJEa9VinUmGEipF2tFNpFLRTVR9FyUQhR5jsBGorXBfLWsOna7KVx"300
TXT"bugcrowd-verification=8d4227c2a9b7e590c32cb3990d7e7200"300
TXT"canva-site-verification=EB9G94gYXhiss659mHO6hg"300
TXT"central-10160"300
TXT"cisco-ci-domain-verification=de48ad4c8b27d4819a0ddb36a703fcb74d8662cffc0947ba03c10493891d481"300
TXT"citrix-verification-code=cfd71eb1-8861-4881-a9f9-618fa3f3f66a"300
TXT"cursor-domain-verification-wej3xv=3l4ZKWyzVfi8NIZvrgEjVu1eq"300
TXT"docker-verification=a6ddafc0-e200-494c-9d85-bb235bf0aa58"300
TXT"docusign=b4b97585-7d68-4397-9e07-e8c5ff9754ff"300
TXT"drift-domain-verification=f51bed4a8f58f49bf2870396c0092a56d5882e9f4780fd963ec783857dd3d0b7"300
TXT"duo_sso_verification=MVtLUiHPlIsWBatbAU4xPWoC202mg10xjgxMNiRqH7hDAlOnSJBBhp6bWKTBcV8G"300
TXT"elevenlabs=7uxIEF33-QXx87nSOmkblcMqn-AG5StycC6nRRywzgM"300
TXT"facebook-domain-verification=lese4oknsyz8f9fgun8ajob5dv5y8u"300
TXT"google-site-verification=7hlgUJNZxg3BdIxkjudmRixYJaFCkpHDUJw6avlROns"300
TXT"google-site-verification=QQO4LiOhyx4DUjKw6rV5c9jWqvOltjJx1r3hcKA2w5E"300
TXT"google-site-verification=VQ-0YEbNBu0bg4z3ocwMtf3g3fHqgxA2gIrAjwQFEuc"300
TXT"google-site-verification=eQ4UCMktgWKYgBkHURiD9gWqgCpTVbtSX4AWzjOfXe0"300
TXT"google-site-verification=elesh0mmchyHAfw2Vktq4WjRbRhzHixaHbrlTjhdLN8"300
TXT"google-site-verification=l5GyCdkTo8Fv1TwA0yKUsiNiMAmdkVVGZ_GfDlblxkA"300
TXT"google-site-verification=rEAr4yCbDBk5Efxyyc9mCZ2MHy_rsb2hCzxKijytBu4"300
TXT"google-site-verification=teY7md1VBnLY1rgmXyzDDlBc-KRG0LaZa1TEBUGge7g"300
TXT"google-site-verification=yMuS2AppRL8mECSmGMPwEBMpxDif0HfOK8vq4q7X8oE"300
TXT"jamf-site-verification=FTxEZ8bdZ-5ecYpJvHQ1kA"300
TXT"logmein-verification-code=53ac3fe3-251f-4811-a0a2-5ea3b38f663c"300
TXT"miro-verification=01fa82b8fe6041ea7112d03669e3209a433a11db"300
TXT"openai-domain-verification=dv-teRJSJMnpISD4cRCQ5BA4TuP"300
TXT"slack-domain-verification=v2P4TRQFSdfSVeWVVfzULEnIvTi4JBIjH6b03p1G"300
TXT"smartsheet-gov-site-validation=fJZfH44il11NH3iDKIbGFNSukjo9DFoA"300
TXT"smartsheet-site-validation=eB0z2pBBd--MoTvEgw8n5PM8X3-BnmKN"300
TXT"smartsheet-site-validation=fadQyQfN1bzmewr-QseFnmMl3m6oh06d"300
TXT"status-page-domain-verification=l31wpt6jtkbt"300
TXT"sterling-verification=625723ede396481ab8ab714ab83939bd"300
TXT"stripe-verification=3c0afc0e1995abddf0ea11067182afcc073eccfb694eb7ac4b9eeffbad694e45"300
TXT"stripe-verification=ada0f91d48011e0e4048bad8056de86898ff90a49858db7ab3a2e9a3492d91f1"300
TXT"teamviewer-sso-verification=e9593414df10419f96b0445312fe19cc"300
TXT"traction-guest=036fd639-f1b6-4fa2-92eb-824a3f3425a4"300
TXT"v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all"300
TXT"wZEG4m8pElnUjo/C1IOzcI0qp3VNg9+N8Xsyv8D74lA="300
TXT"wiz-domain-verification=6878899c8ea6018c7e4d6ae1740a9e20db4f947a31fe1cdeb65a1a6a0f559d65"300
CAA0 iodef "mailto:security@smartsheet.com"900
CAA0 issue "amazon.com"900
CAA0 issue "digicert.com"900
CAA0 issue "letsencrypt.org"900

Checks

  • ✓ TTLs within range #32
    TTLs: A 15m, MX 5m, NS 15m. The NS TTL at the parent is 2d and in the zone 15m; 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: amazon.com, digicert.com, letsencrypt.org.