okx.com

Checked 22 October 2026, 10:05 UTC · via 8.8.8.8
!Passed with warnings
30 passed 1 warning 0 failed 4 info

Registration

info

.com generic · Amazon Registrar, Inc. · expires 2027-07-03

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Amazon Registrar, Inc.
Registered
3 July 2001
Last changed
29 May 2026
Expires
3 July 2027
Status
client transfer prohibited
Registry nameservers
ns-1509.awsdns-60.org, ns-1871.awsdns-41.co.uk, ns-366.awsdns-45.com, ns-549.awsdns-04.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 2027-07-03 #3
    The registration is valid until 2027-07-03 (254 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-1509.awsdns-60.org, ns-1871.awsdns-41.co.uk, ns-366.awsdns-45.com, ns-549.awsdns-04.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1509.awsdns-60.org, ns-1871.awsdns-41.co.uk, ns-366.awsdns-45.com, ns-549.awsdns-04.net
NS in the zone
ns-1509.awsdns-60.org, ns-1871.awsdns-41.co.uk, ns-366.awsdns-45.com, ns-549.awsdns-04.net
NameserverAddressesNetwork (AS)Glue
ns-1509.awsdns-60.org205.251.197.229 2600:9000:5305:e500::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1871.awsdns-41.co.uk205.251.199.79 2600:9000:5307:4f00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-366.awsdns-45.com205.251.193.110 2600:9000:5301:6e00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.110 2600:9000:5301:6e00::1
ns-549.awsdns-04.net205.251.194.37 2600:9000:5302:2500::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1509.awsdns-60.org, ns-1871.awsdns-41.co.uk, ns-366.awsdns-45.com, ns-549.awsdns-04.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-1509.awsdns-60.org 205.251.197.229NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1509.awsdns-60.org 2600:9000:5305:e500::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1871.awsdns-41.co.uk 205.251.199.79NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1871.awsdns-41.co.uk 2600:9000:5307:4f00::1NOERROR, 14 ms, authoritativenoyes / yesrefused-
ns-366.awsdns-45.com 205.251.193.110NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-366.awsdns-45.com 2600:9000:5301:6e00::1NOERROR, 14 ms, authoritativenoyes / yesrefused-
ns-549.awsdns-04.net 205.251.194.37NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-549.awsdns-04.net 2600:9000:5302:2500::1NOERROR, 9 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-1509.awsdns-60.org

Found

Primary (MNAME)
ns-1509.awsdns-60.org
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
1
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
300 s

Serial per nameserver

NameserverSerial
ns-1509.awsdns-60.org (205.251.197.229)1
ns-1509.awsdns-60.org (2600:9000:5305:e500::1)1
ns-1871.awsdns-41.co.uk (205.251.199.79)1
ns-1871.awsdns-41.co.uk (2600:9000:5307:4f00::1)1
ns-366.awsdns-45.com (205.251.193.110)1
ns-366.awsdns-45.com (2600:9000:5301:6e00::1)1
ns-549.awsdns-04.net (205.251.194.37)1
ns-549.awsdns-04.net (2600:9000:5302:2500::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 5m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns-1509.awsdns-60.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

info

Signed, DS published at parent

Found

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

DS at the parent

Key tagAlgorithmDigestMatches a key
6862ECDSAP256SHA256 (13)SHA256 CE544D4E469EDBF7…yes

DNSKEY in the zone

Key tagRoleAlgorithm
56797ZSK (256)ECDSAP256SHA256 (13)
40958ZSK (256)ECDSAP256SHA256 (13)
6862KSK (257)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 6862 (SHA256).
  • ✓ Modern algorithms #29
    Key algorithms: ECDSAP256SHA256 (13).
  • ✓ Short-lived signatures (online signing) #30
    Signatures are valid for 2h0m0s and created on demand; the current one was made at 2026-10-22 09:05 UTC and expires at 2026-10-22 11:20 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

warn

31 records at the apex

Found

Read from
205.251.197.229:53
TypeValueTTL
SOAns-1509.awsdns-60.org. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 300900
NSns-1509.awsdns-60.org.900
NSns-1871.awsdns-41.co.uk.900
NSns-366.awsdns-45.com.900
NSns-549.awsdns-04.net.900
A18.163.203.14160
A16.162.171.6560
A43.198.253.6660
MX1 mxa-00969801.gslb.pphosted.com.300
MX1 mxb-00969801.gslb.pphosted.com.300
MX10 alt1.aspmx.l.google.com.300
MX10 alt2.aspmx.l.google.com.300
MX30 alt3.aspmx.l.google.com.300
MX30 alt4.aspmx.l.google.com.300
MX5 aspmx.l.google.com.300
TXT"1ly4wqqb0cbnlzjhdl4qg03qh3ygw1p2"300
TXT"6d04hqzwq8jrjwqtpzv9mqj438f0k2f1"300
TXT"9qb20m09bnskq6rx5tr6lsxyq23gs064"300
TXT"TS2122787"300
TXT"_globalsign-domain-verification=lL6PmhKfNtgOJdLJyz92Y6i3aE7kDh_1D7U8lJKsZ4"300
TXT"_uumywhf8tkar68ooe1xmsghmob2gff5"300
TXT"_xsrse95zgnfxvc0o6ct4psiu6fenx9t"300
TXT"apple-domain-verification=NgaQnE5BOwJU_r9USE-soCzSyXosIVUQs-cO4NracXU"300
TXT"docusign=ee2f5b83-45bd-404d-b042-26dbc50caf14"300
TXT"google-site-verification=936qi7j66GE1NKNc9kH79lPhVHuXBu7JfB7kKSUlTto"300
TXT"google-site-verification=A8Ot8ckZIgQBXFR3BcLSr2z4SXvfJ2xye4sYx92c4Ho"300
TXT"google-site-verification=LG7uNs5gf6KJN_Z67bnjJEO6EyYF6LrJAsSVT9JV7D4"300
TXT"google-site-verification=MTpvIAdLLerN8qa17gKXML9MELmKXbnGZC6ZhzXXneA"300
TXT"google-site-verification=RjVihgxBZ7vlDmEDV2BQnjkcpgjQyyqPV0VKnDHzyQ0"300
TXT"google-site-verification=Ss3nxp6LbMYwiDleLGuUDaO2aeyntI12RePArk84pB4"300
TXT"v=spf1 include:spf1.dm.aliyun.com include:5507270.spf01.hubspotemail.net include:mail.zendesk.com include:_spf.google.com include:spf-00969801.pphosted.com -all"300

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. The NS TTL at the parent is 2d and in the zone 15m; resolvers may use either.
    #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