notion.com

Checked 22 October 2026, 10:04 UTC · via 8.8.8.8
!Passed with warnings
28 passed 1 warning 0 failed 6 info

Registration

info

.com generic · Amazon Registrar, Inc. · expires 2035-10-05

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Amazon Registrar, Inc.
Registered
6 October 1997
Last changed
21 June 2026
Expires
5 October 2035
Status
client transfer prohibited
Registry nameservers
dana.ns.cloudflare.com, woz.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 2035-10-05 #3
    The registration is valid until 2035-10-05 (3269 days).
  • ✓ Transfer locked #4
    Registry status: client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

dana.ns.cloudflare.com, woz.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
dana.ns.cloudflare.com, woz.ns.cloudflare.com
NS in the zone
dana.ns.cloudflare.com, woz.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
dana.ns.cloudflare.com172.64.32.105 108.162.192.105 173.245.58.105 2803:f800:50::6ca2:c069 2606:4700:50::adf5:3a69 2a06:98c1:50::ac40:2069AS13335 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., US108.162.192.105 172.64.32.105 173.245.58.105 2606:4700:50::adf5:3a69 2803:f800:50::6ca2:c069 2a06:98c1:50::ac40:2069
woz.ns.cloudflare.com108.162.193.150 172.64.33.150 173.245.59.150 2803:f800:50::6ca2:c196 2606:4700:58::adf5:3b96 2a06:98c1:50::ac40:2196AS13335 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., US108.162.193.150 172.64.33.150 173.245.59.150 2606:4700:58::adf5:3b96 2803:f800:50::6ca2:c196 2a06:98c1:50::ac40:2196

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: dana.ns.cloudflare.com, woz.ns.cloudflare.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 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): 12 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

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
dana.ns.cloudflare.com 172.64.32.105NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dana.ns.cloudflare.com 108.162.192.105NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dana.ns.cloudflare.com 173.245.58.105NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
dana.ns.cloudflare.com 2803:f800:50::6ca2:c069NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
dana.ns.cloudflare.com 2606:4700:50::adf5:3a69NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
dana.ns.cloudflare.com 2a06:98c1:50::ac40:2069NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
woz.ns.cloudflare.com 108.162.193.150NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
woz.ns.cloudflare.com 172.64.33.150NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
woz.ns.cloudflare.com 173.245.59.150NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
woz.ns.cloudflare.com 2803:f800:50::6ca2:c196NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
woz.ns.cloudflare.com 2606:4700:58::adf5:3b96NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
woz.ns.cloudflare.com 2a06:98c1:50::ac40:2196NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 12 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: dana.ns.cloudflare.com: "2026.10.2"; woz.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 2418136058 · primary dana.ns.cloudflare.com

Found

Primary (MNAME)
dana.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418136058
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
dana.ns.cloudflare.com (172.64.32.105)2418136058
dana.ns.cloudflare.com (108.162.192.105)2418136058
dana.ns.cloudflare.com (173.245.58.105)2418136058
dana.ns.cloudflare.com (2803:f800:50::6ca2:c069)2418136058
dana.ns.cloudflare.com (2606:4700:50::adf5:3a69)2418136058
dana.ns.cloudflare.com (2a06:98c1:50::ac40:2069)2418136058
woz.ns.cloudflare.com (108.162.193.150)2418136058
woz.ns.cloudflare.com (172.64.33.150)2418136058
woz.ns.cloudflare.com (173.245.59.150)2418136058
woz.ns.cloudflare.com (2803:f800:50::6ca2:c196)2418136058
woz.ns.cloudflare.com (2606:4700:58::adf5:3b96)2418136058
woz.ns.cloudflare.com (2a06:98c1:50::ac40:2196)2418136058

Checks

  • ✓ Serial 2418136058 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 dana.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 2418136058 is a Unix timestamp (2046-08-17 16:27 UTC).

DNSSEC

info

Signed, DS published at parent

Found

Validated by resolver
yes
Denial of existence
NSEC
Signatures valid until
23 October 2026

DS at the parent

Key tagAlgorithmDigestMatches a key
2371ECDSAP256SHA256 (13)SHA256 4E036395EC60EFF6…yes

DNSKEY in the zone

Key tagRoleAlgorithm
2371KSK (257)ECDSAP256SHA256 (13)
34505ZSK (256)ECDSAP256SHA256 (13)

Checks

  • ✓ Signed and validated #27
    The zone is signed, the parent publishes a DS record, and the resolver validates the answers.
  • ✓ DS matches a key #28
    The DS record at the parent matches a key in the zone: key tag 2371 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 50h0m0s and created on demand; the current one was made at 2026-10-21 09:04 UTC and expires at 2026-10-23 11:04 UTC.
  • i
    NSEC
    The zone uses NSEC, so its full contents can be listed by walking the NSEC chain. That is fine unless the names are sensitive.
    #31

Records

info

25 records at the apex

Found

Read from
172.64.32.105:53
TypeValueTTL
SOAdana.ns.cloudflare.com. dns.cloudflare.com. 2418136058 10000 2400 604800 18001800
NSdana.ns.cloudflare.com.86400
NSwoz.ns.cloudflare.com.86400
A208.103.161.16300
A208.103.161.2300
A208.103.161.17300
A208.103.161.1300
AAAA2602:f79a::2300
AAAA2602:f79a:0:1::1300
AAAA2602:f79a::1300
AAAA2602:f79a:0:1::2300
MX0 smtp.secureserver.net.300
MX10 mailstore1.secureserver.net.300
TXT"MS=ms30471993"300
TXT"_k0agcdke41snjx7ss80rut5biowk800"300
TXT"google-site-verification=-rrcdVtUe-ikX5m1TXuYPXNJCC16vUgxXzZgB5138C8"300
TXT"google-site-verification=OMc_LL8ah0VHnQnuaivwDleWPBWz4anUkXhX3xrfowQ"300
TXT"google-site-verification=nZoLSfH2fUzqMya0O0pqBwWkD8cnu8qBpmp66wBGHD8"300
TXT"google-site-verification=tqASjjztbEJ9II6pE7ZItRP5iVmkhNU-iF2_xbHRndc"300
TXT"google-site-verification=zH2sp7b2Gl7ek6DwF_cIDZwvIZPcOUSWn-VQrKxmycc"300
TXT"postman-domain-verification=a713ed7f186c1901e299d55957b0e1bdfaf8f7d5aff31fbc6d49765defe5e190ab5c217a736b4ad45c553409b5b9d519977eb68ba3db733891949c1d456fdb71"300
TXT"proxy-ssl.webflow.com"300
TXT"v=MCPv1; k=ed25519; p=wv6IKlrIuEu00zHS//f5iBxZtZGb+UYuqaRlrg3CEY4="300
TXT"v=spf1 include:mktomail.com ~all"300
TXT"zoom-domain-verification=ZOOM_verify_7d721e1c5c134ba6aa478d5d4315ca01"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