medpagetoday.com

Checked 22 October 2026, 09:44 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

.com generic · CSC Corporate Domains, Inc. · expires 2029-12-02

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
CSC Corporate Domains, Inc.
Registered
2 December 2003
Last changed
21 August 2025
Expires
2 December 2029
Status
client transfer prohibited
Registry nameservers
ns-1442.awsdns-52.org, ns-1625.awsdns-11.co.uk, ns-354.awsdns-44.com, ns-924.awsdns-51.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 2029-12-02 #3
    The registration is valid until 2029-12-02 (1137 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

ns-1442.awsdns-52.org, ns-1625.awsdns-11.co.uk, ns-354.awsdns-44.com, ns-924.awsdns-51.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1442.awsdns-52.org, ns-1625.awsdns-11.co.uk, ns-354.awsdns-44.com, ns-924.awsdns-51.net
NS in the zone
ns-1442.awsdns-52.org, ns-1625.awsdns-11.co.uk, ns-354.awsdns-44.com, ns-924.awsdns-51.net
NameserverAddressesNetwork (AS)Glue
ns-1442.awsdns-52.org205.251.197.162 2600:9000:5305:a200::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1625.awsdns-11.co.uk205.251.198.89 2600:9000:5306:5900::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-354.awsdns-44.com205.251.193.98 2600:9000:5301:6200::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.98 2600:9000:5301:6200::1
ns-924.awsdns-51.net205.251.195.156 2600:9000:5303:9c00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1442.awsdns-52.org, ns-1625.awsdns-11.co.uk, ns-354.awsdns-44.com, ns-924.awsdns-51.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-1442.awsdns-52.org 205.251.197.162NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1442.awsdns-52.org 2600:9000:5305:a200::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1625.awsdns-11.co.uk 205.251.198.89NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1625.awsdns-11.co.uk 2600:9000:5306:5900::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-354.awsdns-44.com 205.251.193.98NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-354.awsdns-44.com 2600:9000:5301:6200::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-924.awsdns-51.net 205.251.195.156NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-924.awsdns-51.net 2600:9000:5303:9c00::1NOERROR, 4 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-924.awsdns-51.net

Found

Primary (MNAME)
ns-924.awsdns-51.net
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-1442.awsdns-52.org (205.251.197.162)1
ns-1442.awsdns-52.org (2600:9000:5305:a200::1)1
ns-1625.awsdns-11.co.uk (205.251.198.89)1
ns-1625.awsdns-11.co.uk (2600:9000:5306:5900::1)1
ns-354.awsdns-44.com (205.251.193.98)1
ns-354.awsdns-44.com (2600:9000:5301:6200::1)1
ns-924.awsdns-51.net (205.251.195.156)1
ns-924.awsdns-51.net (2600:9000:5303:9c00::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-924.awsdns-51.net 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

warn

36 records at the apex

Found

Read from
205.251.197.162:53
TypeValueTTL
SOAns-924.awsdns-51.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1442.awsdns-52.org.172800
NSns-1625.awsdns-11.co.uk.172800
NSns-354.awsdns-44.com.172800
NSns-924.awsdns-51.net.172800
A50.16.4.15160
A100.29.248.8160
MX1 aspmx.l.google.com.60
MX10 aspmx2.googlemail.com.60
MX10 aspmx3.googlemail.com.60
MX5 alt1.aspmx.l.google.com.60
MX5 alt2.aspmx.l.google.com.60
TXT"MS=ms74398949"60
TXT"_globalsign-domain-verification=ddgpRWXMmBK6n6pJf9ZbSOxdTxCpSUkpoHqzFKlYna"60
TXT"_globalsign-domain-verification=f-B_7ErtvSe_2e1SkhSsTab6DQA-AVd2vcvY3gqskQ"60
TXT"adobe-idp-site-verification=cd8dab640ab786a9457c8757f4188cd682dd687a694d1d9c251e9ef54140a0ec"60
TXT"anthropic-domain-verification-nrbcdk=AgOvAe4kMHRePalLaPL7TFAmE"60
TXT"asv=26bebc6c9c16d8228da462c6e4a0406d"60
TXT"atlassian-domain-verification=QUsZX4LdPWTYZgx09JhShFot27EJnUl/5CyxXFsiGebXl2QD8Fh3zzfkYZJe42Ic"60
TXT"cursor-domain-verification-gzp30f=6LgQ8NdJRmI3e5RFTDxqiHMW9"60
TXT"docusign=24332464-d32b-451f-885a-34ef99704247"60
TXT"facebook-domain-verification=qin59bzanvkwqtsgtaeq228wxcklp5"60
TXT"facebook-domain-verification=rdkk3wmnfq3vskkm60xy9363wcfwz1"60
TXT"figma-domain-verification=ab02dae66e56531cc42e8f3ccb45f9c32e96ba95854cd97d30bf9511b264177a-1769722312"60
TXT"google-site-verification=3MHmY5h0pvTFzEFxl8v7z7Q2Qin8p7qyyrCPWtTUJpY"60
TXT"google-site-verification=POOfOsJMEB5Ri-U6Mo39E50MVbZ5lI_ToYpQsVUlk04"60
TXT"google-site-verification=SODhr8ecRnsxj4j2lGDk90I971LOOi7nzHBX_6WyPxs"60
TXT"google-site-verification=lUiR109Fr7wCImumZGxhwFOVpN6NoxbM-gVms6DPZ9w"60
TXT"google-site-verification=o9Cc96uw3KJMePLolKG-TaGic7flrBYu2FjuPPs2_vU"60
TXT"google-site-verification=vw3kHoAblBxht2HcQBeUC2t1TpT7g2zZl6o9SA4KnKI"60
TXT"iContact1868438"60
TXT"knowbe4-site-verification=f8a0eecde40ecb172ead956570d9179c"60
TXT"onetrust-domain-verification=8881bc01e7e0412cad34d32fc0145175"60
TXT"openai-domain-verification=dv-kCTWEhbGQ6qZnb6RFAhM1u62"60
TXT"tollbit-domain-verification=927113b9a3f6ab22b17f1108bc995776d32c06b6fb41b6a9fcdd04dc22616c3f"60
TXT"v=spf1 include:_spf.google.com include:amazonses.com include:_spf.salesforce.com include:_spf.emailcampaigns.net ~all"60

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), MX (1m). Low TTLs are useful just before a planned change.
    #32
  • ✓ 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