webmd.com

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

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-04-05

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
6 April 1998
Last changed
4 March 2026
Expires
5 April 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
amir.ns.cloudflare.com, vita.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 2027-04-05 #3
    The registration is valid until 2027-04-05 (164 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

amir.ns.cloudflare.com, vita.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
amir.ns.cloudflare.com, vita.ns.cloudflare.com
NS in the zone
amir.ns.cloudflare.com, vita.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
amir.ns.cloudflare.com108.162.193.62 173.245.59.62 172.64.33.62 2a06:98c1:50::ac40:213e 2606:4700:58::adf5:3b3e 2803:f800:50::6ca2:c13eAS13335 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., US108.162.193.62 172.64.33.62 173.245.59.62 2606:4700:58::adf5:3b3e 2803:f800:50::6ca2:c13e 2a06:98c1:50::ac40:213e
vita.ns.cloudflare.com173.245.58.238 108.162.192.238 172.64.32.238 2606:4700:50::adf5:3aee 2a06:98c1:50::ac40:20ee 2803:f800:50::6ca2:c0eeAS13335 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., US108.162.192.238 172.64.32.238 173.245.58.238 2606:4700:50::adf5:3aee 2803:f800:50::6ca2:c0ee 2a06:98c1:50::ac40:20ee

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: amir.ns.cloudflare.com, vita.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
amir.ns.cloudflare.com 108.162.193.62NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
amir.ns.cloudflare.com 173.245.59.62NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
amir.ns.cloudflare.com 172.64.33.62NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
amir.ns.cloudflare.com 2a06:98c1:50::ac40:213eNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
amir.ns.cloudflare.com 2606:4700:58::adf5:3b3eNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
amir.ns.cloudflare.com 2803:f800:50::6ca2:c13eNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
vita.ns.cloudflare.com 173.245.58.238NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
vita.ns.cloudflare.com 108.162.192.238NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
vita.ns.cloudflare.com 172.64.32.238NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
vita.ns.cloudflare.com 2606:4700:50::adf5:3aeeNOERROR, 18 ms, authoritativenoyes / yesrefused2026.10.2
vita.ns.cloudflare.com 2a06:98c1:50::ac40:20eeNOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
vita.ns.cloudflare.com 2803:f800:50::6ca2:c0eeNOERROR, 18 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: amir.ns.cloudflare.com: "2026.10.2"; vita.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 2417506329 · primary amir.ns.cloudflare.com

Found

Primary (MNAME)
amir.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417506329
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
amir.ns.cloudflare.com (108.162.193.62)2417506329
amir.ns.cloudflare.com (173.245.59.62)2417506329
amir.ns.cloudflare.com (172.64.33.62)2417506329
amir.ns.cloudflare.com (2a06:98c1:50::ac40:213e)2417506329
amir.ns.cloudflare.com (2606:4700:58::adf5:3b3e)2417506329
amir.ns.cloudflare.com (2803:f800:50::6ca2:c13e)2417506329
vita.ns.cloudflare.com (173.245.58.238)2417506329
vita.ns.cloudflare.com (108.162.192.238)2417506329
vita.ns.cloudflare.com (172.64.32.238)2417506329
vita.ns.cloudflare.com (2606:4700:50::adf5:3aee)2417506329
vita.ns.cloudflare.com (2a06:98c1:50::ac40:20ee)2417506329
vita.ns.cloudflare.com (2803:f800:50::6ca2:c0ee)2417506329

Checks

  • ✓ Serial 2417506329 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 amir.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 2417506329 is a Unix timestamp (2046-08-10 09:32 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

info

26 records at the apex

Found

Read from
108.162.193.62:53
TypeValueTTL
SOAamir.ns.cloudflare.com. dns.cloudflare.com. 2417506329 10000 2400 604800 18001800
NSamir.ns.cloudflare.com.86400
NSvita.ns.cloudflare.com.86400
A207.231.204.56300
MX1 aspmx.l.google.com.300
MX10 alt3.aspmx.l.google.com.300
MX10 alt4.aspmx.l.google.com.300
MX5 alt1.aspmx.l.google.com.300
MX5 alt2.aspmx.l.google.com.300
TXT"SFMC-OzW5wNjIBpdXFIg-AnBOn39Kj0umwTThgg5Yfwm7"300
TXT"_7ef7fpwy2w82xju83yg53s3475e2qvn"300
TXT"a65ccd5662904680b467ccd142e9670b"300
TXT"adobe-idp-site-verification=273cee5ce44db359754043668120f4ccf0076e55a5fe663ce1bced543f24d765"300
TXT"e0cfe10a46f74485a608c50a63f263f9"300
TXT"facebook-domain-verification=w0zj3kf18imt845aplzy38efaox23t"300
TXT"globalsign-domain-verification=-8kpivpbgMACeanB8hk0ansSLujEnFA_i1ukkwKY1Y"300
TXT"google-site-verification=8ndI6dMiz3lrBkg2YbMR_RMa3lihncz9VgamtujOXQo"300
TXT"google-site-verification=BR_G5pH8GUkbNgoC1nOdBpj3UZINgHU5Q9KltDsEGBM"300
TXT"google-site-verification=WUMAoNjAhtgdb0eWxrQUo1aE3Rvz4ApU-CRm0Dtw1-A"300
TXT"google-site-verification=XIEa3Mj4EhHxjtJ0RrN1tSfKYwyPFKyhoKFKZrfTn3Y"300
TXT"google-site-verification=tbLtuRpVup8Z965hPBFprdgjOoJw4VJqv1mkzJl84VE"300
TXT"s6fk0y05g78y03fjjkwynkb69sf9ggbb"300
TXT"v=DKIM1; k=rsa; p=MIIBIjANB\" \"gkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAglkiu3gC0LOVJ8uWLfw8Ykk9tEFFL/EdXmMFBDUZSHMtPKRG0LBUBsmV/piNw1xsjg+nR3zpqqu68DeV/2GnFTvcKu02YJS7B6T7ibL/One14BoZW5Hpdp2LEnQxmrMxGjlzZHvwI9+3w9qgpo1jCe34jKW2pr6ext5cX7SxyNO41c5l4QgI4oJu3GGq2l" "6CMN+OJAc54GU4ofetwS+L8gcWK86\" \"+ebMilGq3OgpowJZATl27ii7KiIHxZXixNLB5nDVPKrmuN4jcYEYGPEVELK4X/NxZWGTiZoFRXxwTDZYaBrDyxvOoFbQqwwOHfrMHHwTSTSRH5eLp2CGmMQtutwIDAQAB"300
TXT"v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAglkiu3gC0LOVJ8uWLfw8Ykk9tEFFL/EdXmMFBDUZSHMtPKRG0LBUBsmV/piNw1xsjg+nR3zpqqu68DeV/2GnFTvcKu02YJS7B6T7ibL/One14BoZW5Hpdp2LEnQxmrMxGjlzZHvwI9+3w9qgpo1jCe34jKW2pr6ext5cX7SxyNO41c5l4QgI4oJu3GGq2l6CM" "N+OJAc54GU4ofetwS+L8gcWK86+ebMilGq3OgpowJZATl27ii7KiIHxZXixNLB5nDVPKrmuN4jcYEYGPEVELK4X/NxZWGTiZoFRXxwTDZYaBrDyxvOoFbQqwwOHfrMHHwTSTSRH5eLp2CGmMQtutwIDAQAB"300
TXT"v=spf1 include:spf.zohomail360.com include:mail.zendesk.com include:spf.protection.outlook.com include:_spf.google.com include:spf.mandrillapp.com ip4:207.138.251.0/25 ip4:104.47.37.127 ip4:12.237.176.1/24 ip4:13.108.238.128/27 ip4:13.108.254.128/27 ip4:1" "36.146.208.16/28 ip4:136.146.210.16/28 ip4:136.147.46.176/28 ip4:136.147.46.224/26 ip4:136.147.62.176/28 ip4:136.147.62.224/26 ip4:204.14.232.64/28 ip4:204.14.234.64/28 ip4:206.155.74.1/24 ip4:207.231.200.0/21 ip4:213.199.154.0/17 ip4:216.32.180.0/23 ip4:" "23.253.183.0/24 ip4:63.150.153.0/28 ip4:63.236.105.192/28 ip4:63.236.106.128/27 ip4:63.236.109.192/28 ip4:63.236.97.64/27 ip4:64.113.28.0/22 ip4:65.121.87.1/24 ip4:65.55.88.0/24 ip4:66.179.21.130 ip4:67.130.38.1/24 ip4:68.177.111.128/26 ip4:96.43.144.64/2" "8 ip4:96.43.147.64/28 ip4:96.43.148.64/28 ip4:96.43.151.64/28 ip4:208.185.229.0/24 ip4:208.185.235.0/24 ip4:148.59.108.0/24 ip4:148.59.106.0/24 ip4:40.71.34.249 ip4:98.158.192.0/20 ~all"300
TXT"wrike-verification=MTkwMjI3MDo2ZmJlNDE2N2FiMzllNjE0MDdiYjJjN2NmOWE2ZDA5YTA4YzliZjM5MThiNmQ3MWI5YTk4YmI4OTk5Y2QyMWZm"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 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