kroll.com

Checked 22 October 2026, 09:32 UTC · via 8.8.8.8
!Passed with warnings
23 passed 3 warnings 0 failed 5 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-09-01

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
2 September 1995
Last changed
31 July 2025
Expires
1 September 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
arya.ns.cloudflare.com, nick.ns.cloudflare.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 2027-09-01 #3
    The registration is valid until 2027-09-01 (313 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

arya.ns.cloudflare.com, nick.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
arya.ns.cloudflare.com, nick.ns.cloudflare.com
NS in the zone
burt.ns.cloudflare.com, sara.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
arya.ns.cloudflare.com (parent only)108.162.192.70 172.64.32.70 173.245.58.70 2803:f800:50::6ca2:c046 2a06:98c1:50::ac40:2046 2606:4700:50::adf5:3a46AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.192.70 172.64.32.70 173.245.58.70 2606:4700:50::adf5:3a46 2803:f800:50::6ca2:c046 2a06:98c1:50::ac40:2046
burt.ns.cloudflare.com (zone only)108.162.193.79 172.64.33.79 173.245.59.79 2803:f800:50::6ca2:c14f 2a06:98c1:50::ac40:214f 2606:4700:58::adf5:3b4fAS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-
nick.ns.cloudflare.com (parent only)108.162.193.213 173.245.59.213 172.64.33.213 2803:f800:50::6ca2:c1d5 2a06:98c1:50::ac40:21d5 2606:4700:58::adf5:3bd5AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.193.213 172.64.33.213 173.245.59.213 2606:4700:58::adf5:3bd5 2803:f800:50::6ca2:c1d5 2a06:98c1:50::ac40:21d5
sara.ns.cloudflare.com (zone only)173.245.58.144 108.162.192.144 172.64.32.144 2803:f800:50::6ca2:c090 2a06:98c1:50::ac40:2090 2606:4700:50::adf5:3a90AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: arya.ns.cloudflare.com, nick.ns.cloudflare.com.
    #6
  • !
    NS sets differ
    The nameservers at the parent and in the zone should be the same. Only at the parent: arya.ns.cloudflare.com, nick.ns.cloudflare.com; only in the zone: burt.ns.cloudflare.com, sara.ns.cloudflare.com. arya.ns.cloudflare.com, burt.ns.cloudflare.com, nick.ns.cloudflare.com, sara.ns.cloudflare.com report NS burt.ns.cloudflare.com sara.ns.cloudflare.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 6 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 24 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

warn

24 of 24 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
arya.ns.cloudflare.com 108.162.192.70NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
arya.ns.cloudflare.com 172.64.32.70NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
arya.ns.cloudflare.com 173.245.58.70NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
arya.ns.cloudflare.com 2803:f800:50::6ca2:c046NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
arya.ns.cloudflare.com 2a06:98c1:50::ac40:2046NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
arya.ns.cloudflare.com 2606:4700:50::adf5:3a46NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 108.162.193.79NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 172.64.33.79NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 173.245.59.79NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 2803:f800:50::6ca2:c14fNOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 2a06:98c1:50::ac40:214fNOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
burt.ns.cloudflare.com 2606:4700:58::adf5:3b4fNOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
nick.ns.cloudflare.com 108.162.193.213NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
nick.ns.cloudflare.com 173.245.59.213NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
nick.ns.cloudflare.com 172.64.33.213NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
nick.ns.cloudflare.com 2803:f800:50::6ca2:c1d5NOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.2
nick.ns.cloudflare.com 2a06:98c1:50::ac40:21d5NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
nick.ns.cloudflare.com 2606:4700:58::adf5:3bd5NOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.2
sara.ns.cloudflare.com 173.245.58.144NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
sara.ns.cloudflare.com 108.162.192.144NOERROR, 13 ms, authoritativenoyes / yesrefused2026.10.2
sara.ns.cloudflare.com 172.64.32.144NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
sara.ns.cloudflare.com 2803:f800:50::6ca2:c090NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
sara.ns.cloudflare.com 2a06:98c1:50::ac40:2090NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
sara.ns.cloudflare.com 2606:4700:50::adf5:3a90NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 24 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: arya.ns.cloudflare.com: "2026.10.2"; burt.ns.cloudflare.com: "2026.10.2"; nick.ns.cloudflare.com: "2026.10.2"; sara.ns.cloudflare.com: "2026.10.2". Hide or replace the version string.
    #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 2417616999 · primary burt.ns.cloudflare.com

Found

Primary (MNAME)
burt.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417616999
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
arya.ns.cloudflare.com (108.162.192.70)2417616999
arya.ns.cloudflare.com (172.64.32.70)2417616999
arya.ns.cloudflare.com (173.245.58.70)2417616999
arya.ns.cloudflare.com (2803:f800:50::6ca2:c046)2417616999
arya.ns.cloudflare.com (2a06:98c1:50::ac40:2046)2417616999
arya.ns.cloudflare.com (2606:4700:50::adf5:3a46)2417616999
burt.ns.cloudflare.com (108.162.193.79)2417616999
burt.ns.cloudflare.com (172.64.33.79)2417616999
burt.ns.cloudflare.com (173.245.59.79)2417616999
burt.ns.cloudflare.com (2803:f800:50::6ca2:c14f)2417616999
burt.ns.cloudflare.com (2a06:98c1:50::ac40:214f)2417616999
burt.ns.cloudflare.com (2606:4700:58::adf5:3b4f)2417616999
nick.ns.cloudflare.com (108.162.193.213)2417616999
nick.ns.cloudflare.com (173.245.59.213)2417616999
nick.ns.cloudflare.com (172.64.33.213)2417616999
nick.ns.cloudflare.com (2803:f800:50::6ca2:c1d5)2417616999
nick.ns.cloudflare.com (2a06:98c1:50::ac40:21d5)2417616999
nick.ns.cloudflare.com (2606:4700:58::adf5:3bd5)2417616999
sara.ns.cloudflare.com (173.245.58.144)2417616999
sara.ns.cloudflare.com (108.162.192.144)2417616999
sara.ns.cloudflare.com (172.64.32.144)2417616999
sara.ns.cloudflare.com (2803:f800:50::6ca2:c090)2417616999
sara.ns.cloudflare.com (2a06:98c1:50::ac40:2090)2417616999
sara.ns.cloudflare.com (2606:4700:50::adf5:3a90)2417616999

Checks

  • ✓ Serial 2417616999 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver burt.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2417616999 is a Unix timestamp (2046-08-11 16:16 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

info

50 records at the apex

Found

Read from
108.162.192.70:53
TypeValueTTL
SOAburt.ns.cloudflare.com. dns.cloudflare.com. 2417616999 10000 2400 604800 18001800
NSburt.ns.cloudflare.com.86400
NSsara.ns.cloudflare.com.86400
A172.64.144.119300
A104.18.43.137300
AAAA2606:4700:4409::6812:2b89300
AAAA2a06:98c1:310b::ac40:9077300
MX10 usb-smtp-inbound-1.mimecast.com.300
MX10 usb-smtp-inbound-2.mimecast.com.300
TXT"2934359"300
TXT"D0U0F62301"300
TXT"MS=ms22473095"300
TXT"MS=ms76112556"300
TXT"ZOOM_verify_OWmlcryNcGiTBKVwjajDWa"300
TXT"ZOOM_verify_vVUPoHP338U3uy0v2JGASQ"300
TXT"_7776a1xc240lph1h1ox73fp808r84mz"300
TXT"_qffinslhpefwbpznepufr9i79wvxb42"300
TXT"anthropic-domain-verification-n3ntpc=QwSMtPaVii56cFRkpbUI6ygBL"300
TXT"apple-domain-verification=35PJg7aMVAUfcbzH"300
TXT"atlassian-domain-verification=kmfhKJPNXUQCZMdYiOaQlQN7JAbr/g3eCDEj76hyxjkWWW/U0MbjsvFqq6O9nqeH"300
TXT"atlassian-domain-verification=uhB5efiYB5SZMAA/OtMMZnKIWIMmk0aPCyK0MAFwgMY2Uq05z1Ug7XYB9QBpOkzb"300
TXT"bZYH6dC0iDwAL0QSJq/UG+Unp1OEMoFjqeRbnGv7xGfOueYozlAqhVT5X9tF0LXcV22SqkM6VmqhFvWd7JfPCw=="300
TXT"box-domain-verification=84d7f2651c2ac2ac2a5bc53623442383107ca35787f58672fa8641791a68aec3"300
TXT"box-domain-verification=cd63e5890b8133f9a5404eee0ae1e37214fc6442c291654940c3f4a71f2b0284"300
TXT"bw=kpVdAmkP5BStJ620ZNunZEPK37nBzc2qjtS9AGkVO2/e"300
TXT"cardiologydataincident.ksacms.com"300
TXT"cisco-ci-domain-verification=74ce8441c48964a8cc3fd7185d0a6c91515fa0d6607ca651ff9e8a38a8f8705b"300
TXT"cloudhealth=e95d88b4-84b1-4749-9824-69f1b46730f2"300
TXT"cursor-domain-verification-4r3bnk=GVwfOXdhwqEt0iW5Vfn3wFUkx"300
TXT"d80f17683gf6gvhtnns2906bvjbglrz8"300
TXT"docker-verification=02c5eafa-daa0-4101-bd4b-509c2c31ea53"300
TXT"docusign=48e32a84-e7f9-4ab0-bcb6-2d44fec6fc99"300
TXT"ecostruxure-it-verification=2830051b-858f-47c3-9791-2329c05a6b41"300
TXT"facebook-domain-verification=5n2w452gv6ukgbklyqz2j68e33w9rp"300
TXT"gamma-domain-verification-t0662b=Y1NeVU7zY13BXdrRAFIsTXG1A"300
TXT"google-site-verification=fcZYt7ndjedQxoFinlm4ScudIyfxxur-cBYmM5t1RYY"300
TXT"jamf-site-verification=sKo95URQKhUhiY2hLIwwTQ"300
TXT"magic-patterns-domain-verification-5eyj6g=m2iDzgmXwfGZmjUBPQcVICksX"300
TXT"miro-verification=1f3e3d919fefa8d7930b016d6c6ae56d80887be2"300
TXT"openai-domain-verification=dv-QvDRBP6SQgzLBFLVqoLwHQFD"300
TXT"openai-domain-verification=dv-ciQYTlbmGlcnqyqeZzKG1jwq"300
TXT"openai-domain-verification=dv-wYssVCuUiH7Vm6X2P1JLLw38"300
TXT"pardot_37972_*=e3d2fb4f0351caab770836572384cb845a6bb0149e5555f59bb719f0176de5d8"300
TXT"pendo-domain-verification=HaAe2JWc56yJHP_3Ap_-9GF44Xo"300
TXT"sitecore-domain-verification=87e8004dbcb94583bd96abca7900a0a6"300
TXT"slack-domain-verification=3vRPtRSoBudffjBBqMYcOgQCH6OkHWsJMhwazoku"300
TXT"smartsheet-site-validation=fXjX9p73C_FIzw39LumfMth9rGsCq4Fy"300
TXT"v=spf1 include:usb._netblocks.mimecast.com include:spf_apps.kroll.com include:aspmx.pardot.com include:mail.zendesk.com include:spf_c.oraclecloud.com -all"300
TXT"wombat-verification=3KwxVCQV1HEp-aRXRTKKaZ5G0frhk"300
TXT"xGG1ChIFl3FlU5+JXDLvFiXUF0iWWAxvEjLhg7R0simcYVtiLLyEY4zZZyYrKMkbFAKdPj68aEHfyfCnX7HLqA=="300

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 5m, 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.
  • 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