xmind.com

Checked 22 October 2026, 11:35 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2034-01-11

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
12 January 1997
Last changed
6 January 2025
Expires
11 January 2034
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns-1341.awsdns-39.org, ns-1764.awsdns-28.co.uk, ns-41.awsdns-05.com, ns-937.awsdns-53.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 2034-01-11 #3
    The registration is valid until 2034-01-11 (2637 days).
  • ✓ Transfer locked #4
    Registry status: client delete prohibited, client renew 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

ns-1341.awsdns-39.org, ns-1764.awsdns-28.co.uk, ns-41.awsdns-05.com, ns-937.awsdns-53.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1341.awsdns-39.org, ns-1764.awsdns-28.co.uk, ns-41.awsdns-05.com, ns-937.awsdns-53.net
NS in the zone
ns-1341.awsdns-39.org, ns-1764.awsdns-28.co.uk, ns-41.awsdns-05.com, ns-937.awsdns-53.net
NameserverAddressesNetwork (AS)Glue
ns-1341.awsdns-39.org205.251.197.61 2600:9000:5305:3d00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1764.awsdns-28.co.uk205.251.198.228 2600:9000:5306:e400::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-41.awsdns-05.com205.251.192.41 2600:9000:5300:2900::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.41 2600:9000:5300:2900::1
ns-937.awsdns-53.net205.251.195.169 2600:9000:5303:a900::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1341.awsdns-39.org, ns-1764.awsdns-28.co.uk, ns-41.awsdns-05.com, ns-937.awsdns-53.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-1341.awsdns-39.org 205.251.197.61NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1341.awsdns-39.org 2600:9000:5305:3d00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1764.awsdns-28.co.uk 205.251.198.228NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1764.awsdns-28.co.uk 2600:9000:5306:e400::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-41.awsdns-05.com 205.251.192.41NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-41.awsdns-05.com 2600:9000:5300:2900::1NOERROR, 10 ms, authoritativenoyes / yesrefused-
ns-937.awsdns-53.net 205.251.195.169NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-937.awsdns-53.net 2600:9000:5303:a900::1NOERROR, 5 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-1341.awsdns-39.org

Found

Primary (MNAME)
ns-1341.awsdns-39.org
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-1341.awsdns-39.org (205.251.197.61)1
ns-1341.awsdns-39.org (2600:9000:5305:3d00::1)1
ns-1764.awsdns-28.co.uk (205.251.198.228)1
ns-1764.awsdns-28.co.uk (2600:9000:5306:e400::1)1
ns-41.awsdns-05.com (205.251.192.41)1
ns-41.awsdns-05.com (2600:9000:5300:2900::1)1
ns-937.awsdns-53.net (205.251.195.169)1
ns-937.awsdns-53.net (2600:9000:5303:a900::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-1341.awsdns-39.org 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

15 records at the apex

Found

Read from
205.251.197.61:53
TypeValueTTL
SOAns-1341.awsdns-39.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400900
NSns-1341.awsdns-39.org.172800
NSns-1764.awsdns-28.co.uk.172800
NSns-41.awsdns-05.com.172800
NSns-937.awsdns-53.net.172800
A18.66.112.7660
A18.66.112.8660
A18.66.112.3060
A18.66.112.12160
MX1 smtp.google.com.300
TXT"google-site-verification=Fq0I21Zj9l9wnJtyxGlFvPx6WR06xdrXVJZVQkySisU"1800
TXT"google-site-verification=PJfAj9icAUogNYMcIdHEN9XtdLaT4r04s_pMB9hiRhM"1800
TXT"google-site-verification=gArTwDXwGrQ7BVYjiZHKH4NGBWkqN9CZ6YPvc0yYv2M"1800
TXT"v=spf1 include:_spf.google.com include:mail.zendesk.com -all"1800
TXT"zoom-domain-verification=ZOOM_verify_196c9f56371f4a92a14c4ab3a2c4c371"1800

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change.
    #32
  • ✓ No CNAME at the apex #33
    The zone apex has no CNAME record.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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