xnview.com

Checked 22 October 2026, 11:36 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 5 info

Registration

info

.com generic · OVH sas · expires 2027-05-02

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
OVH sas
Registered
2 May 2000
Last changed
3 May 2026
Expires
2 May 2027
Status
client delete prohibited, client transfer prohibited
Registry nameservers
cortney.ns.cloudflare.com, isaac.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 2027-05-02 #3
    The registration is valid until 2027-05-02 (192 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client transfer prohibited.
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

cortney.ns.cloudflare.com, isaac.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
cortney.ns.cloudflare.com, isaac.ns.cloudflare.com
NS in the zone
cortney.ns.cloudflare.com, isaac.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
cortney.ns.cloudflare.com108.162.192.87 172.64.32.87 173.245.58.87 2a06:98c1:50::ac40:2057 2803:f800:50::6ca2:c057 2606:4700:50::adf5:3a57AS13335 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., US108.162.192.87 172.64.32.87 173.245.58.87 2606:4700:50::adf5:3a57 2803:f800:50::6ca2:c057 2a06:98c1:50::ac40:2057
isaac.ns.cloudflare.com108.162.193.177 173.245.59.177 172.64.33.177 2a06:98c1:50::ac40:21b1 2803:f800:50::6ca2:c1b1 2606:4700:58::adf5:3bb1AS13335 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., US108.162.193.177 172.64.33.177 173.245.59.177 2606:4700:58::adf5:3bb1 2803:f800:50::6ca2:c1b1 2a06:98c1:50::ac40:21b1

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: cortney.ns.cloudflare.com, isaac.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
cortney.ns.cloudflare.com 108.162.192.87NOERROR, 21 ms, authoritativenoyes / yesrefused2026.10.2
cortney.ns.cloudflare.com 172.64.32.87NOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
cortney.ns.cloudflare.com 173.245.58.87NOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
cortney.ns.cloudflare.com 2a06:98c1:50::ac40:2057NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
cortney.ns.cloudflare.com 2803:f800:50::6ca2:c057NOERROR, 19 ms, authoritativenoyes / yesrefused2026.10.2
cortney.ns.cloudflare.com 2606:4700:50::adf5:3a57NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
isaac.ns.cloudflare.com 108.162.193.177NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
isaac.ns.cloudflare.com 173.245.59.177NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
isaac.ns.cloudflare.com 172.64.33.177NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
isaac.ns.cloudflare.com 2a06:98c1:50::ac40:21b1NOERROR, 21 ms, authoritativenoyes / yesrefused2026.10.2
isaac.ns.cloudflare.com 2803:f800:50::6ca2:c1b1NOERROR, 20 ms, authoritativenoyes / yesrefused2026.10.2
isaac.ns.cloudflare.com 2606:4700:58::adf5:3bb1NOERROR, 24 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: cortney.ns.cloudflare.com: "2026.10.2"; isaac.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 2417716428 · primary cortney.ns.cloudflare.com

Found

Primary (MNAME)
cortney.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417716428
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
cortney.ns.cloudflare.com (108.162.192.87)2417716428
cortney.ns.cloudflare.com (172.64.32.87)2417716428
cortney.ns.cloudflare.com (173.245.58.87)2417716428
cortney.ns.cloudflare.com (2a06:98c1:50::ac40:2057)2417716428
cortney.ns.cloudflare.com (2803:f800:50::6ca2:c057)2417716428
cortney.ns.cloudflare.com (2606:4700:50::adf5:3a57)2417716428
isaac.ns.cloudflare.com (108.162.193.177)2417716428
isaac.ns.cloudflare.com (173.245.59.177)2417716428
isaac.ns.cloudflare.com (172.64.33.177)2417716428
isaac.ns.cloudflare.com (2a06:98c1:50::ac40:21b1)2417716428
isaac.ns.cloudflare.com (2803:f800:50::6ca2:c1b1)2417716428
isaac.ns.cloudflare.com (2606:4700:58::adf5:3bb1)2417716428

Checks

  • ✓ Serial 2417716428 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 cortney.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 2417716428 is a Unix timestamp (2046-08-12 19:53 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

11 records at the apex

Found

Read from
108.162.192.87:53
TypeValueTTL
SOAcortney.ns.cloudflare.com. dns.cloudflare.com. 2417716428 10000 2400 604800 18001800
NScortney.ns.cloudflare.com.86400
NSisaac.ns.cloudflare.com.86400
A212.83.169.2153600
MX1 mx0.mail.ovh.net.86400
MX10 mx1.mail.ovh.net.86400
MX20 mx2.mail.ovh.net.86400
MX30 mx3.mail.ovh.net.86400
MX40 mx4.mail.ovh.net.86400
TXT"google-site-verification=peG3-lSWg7S4jn9TGOXGjVJM68ceFVnNnxZ8T71Daks"86400
TXT"v=spf1 a include:mx.ovh.com ~all"86400

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, MX 1d, 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