mathworks.com

Checked 22 October 2026, 09:43 UTC · via 8.8.8.8
!Passed with warnings
27 passed 1 warning 0 failed 3 info

Registration

info

.com generic · MarkMonitor Inc. · expires 2027-10-02

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
MarkMonitor Inc.
Registered
3 October 1989
Last changed
31 August 2026
Expires
2 October 2027
Status
client delete prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns-1482.awsdns-57.org, ns-1873.awsdns-42.co.uk, ns-362.awsdns-45.com, ns-582.awsdns-08.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 2027-10-02 #3
    The registration is valid until 2027-10-02 (344 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

ns-1482.awsdns-57.org, ns-1873.awsdns-42.co.uk, ns-362.awsdns-45.com, ns-582.awsdns-08.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1482.awsdns-57.org, ns-1873.awsdns-42.co.uk, ns-362.awsdns-45.com, ns-582.awsdns-08.net
NS in the zone
ns-1482.awsdns-57.org, ns-1873.awsdns-42.co.uk, ns-362.awsdns-45.com, ns-582.awsdns-08.net
NameserverAddressesNetwork (AS)Glue
ns-1482.awsdns-57.org205.251.197.202 2600:9000:5305:ca00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1873.awsdns-42.co.uk205.251.199.81 2600:9000:5307:5100::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-362.awsdns-45.com205.251.193.106 2600:9000:5301:6a00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.106 2600:9000:5301:6a00::1
ns-582.awsdns-08.net205.251.194.70 2600:9000:5302:4600::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1482.awsdns-57.org, ns-1873.awsdns-42.co.uk, ns-362.awsdns-45.com, ns-582.awsdns-08.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-1482.awsdns-57.org 205.251.197.202NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1482.awsdns-57.org 2600:9000:5305:ca00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1873.awsdns-42.co.uk 205.251.199.81NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1873.awsdns-42.co.uk 2600:9000:5307:5100::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-362.awsdns-45.com 205.251.193.106NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-362.awsdns-45.com 2600:9000:5301:6a00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-582.awsdns-08.net 205.251.194.70NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-582.awsdns-08.net 2600:9000:5302:4600::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-582.awsdns-08.net

Found

Primary (MNAME)
ns-582.awsdns-08.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-1482.awsdns-57.org (205.251.197.202)1
ns-1482.awsdns-57.org (2600:9000:5305:ca00::1)1
ns-1873.awsdns-42.co.uk (205.251.199.81)1
ns-1873.awsdns-42.co.uk (2600:9000:5307:5100::1)1
ns-362.awsdns-45.com (205.251.193.106)1
ns-362.awsdns-45.com (2600:9000:5301:6a00::1)1
ns-582.awsdns-08.net (205.251.194.70)1
ns-582.awsdns-08.net (2600:9000:5302:4600::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-582.awsdns-08.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

info

45 records at the apex

Found

Read from
205.251.197.202:53
TypeValueTTL
SOAns-582.awsdns-08.net. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 86400120
NSns-1482.awsdns-57.org.86400
NSns-1873.awsdns-42.co.uk.86400
NSns-362.awsdns-45.com.86400
NSns-582.awsdns-08.net.86400
A166.117.239.2203600
A15.197.198.813600
MX10 us-smtp-inbound-1.mimecast.com.300
MX10 us-smtp-inbound-2.mimecast.com.300
TXT"Wbf5CztfbAgw8EJkN6s3JcdI1erwgQCZKTJWX+m5v5e9LxCDveKWvcci8vt4vQ3KM01rj4D+QKjhoIC053MD2g=="900
TXT"_0kprtemtavw6c98hw9rdw5a17d8kmwa"900
TXT"_1fff33qrtxsb8od6l4kn0arhylgr8go"900
TXT"_3ubx42uy2dlnr3ex6ee1s72swuik6b2"900
TXT"_k8v25c2h5bpfc8tozt70eca3kz9gjw3"900
TXT"_sp9whvraprytabsyl53jvh4fs7n4f7r"900
TXT"_t1serikv4r6by94k0dae1a657ws2kgc"900
TXT"_zgcuw35ttcrb6me33qwla6b3ucovkz1"900
TXT"adobe-sign-verification=8ec6270cf3f7c49adc1365013a432cbf"900
TXT"amazonses:NJ6vEEaA/FNrKjAmtyPtROgdwrOYdqHE1AZm4cW9uGk="900
TXT"amazonses:pkGgBOcc0yRYK+PwmefkWSLSZnMIJWZlLCXt5l0waUI="900
TXT"apple-domain-verification=UgosxN2Yczch4kF4"900
TXT"atlassian-domain-verification=iaCCzjvA6u7mwPWr7k8AKePbyzDqGZNVPXgFWLFCR9Z5aIJT6jhxCagA/3a9QQN6"900
TXT"atlassian-sending-domain-verification=be4f7aba-2926-4a17-8292-41ab024f714d"900
TXT"cisco-ci-domain-verification=3beca1b6d9a201c05c1d8ad91e24fd408d7657d4c0396b2a1b1eaf31c6215e89"900
TXT"ecostruxure-it-verification=4c7f668f-11d5-4032-b00e-eba11a9e62bc"900
TXT"google-site-verification=--CwY2yF7pjY5KkSBgOYxhlNwi2TZt-Lv0kJBsm1Nyo"900
TXT"google-site-verification=DMibfdzi9R0PB97ORCsENz8lZXS9YOMCb_DoyB27RiI"900
TXT"google-site-verification=gdub8dYukAYKB8b_vU2n-CuMhrw27BlwBOpqNT2B4E4"900
TXT"google-site-verification=lVqqeQYxr15Rg7WwX2H0YA5jWcHxsC5qOn78nlLOi2c"900
TXT"jamf-site-verification=fMBQLrzXFo82ZsiirkC3fw"900
TXT"miro-verification=a9c2630d245a36fc83aa59808d9fb412686626bf"900
TXT"mixpanel-domain-verify=fa334fc5-81c2-4365-983d-9ebe0b3621d6"900
TXT"openai-domain-verification=dv-xIgEm9S8nWLnpbLNfmmSD72y"900
TXT"status-page-domain-verification=xcvnyd299bp1"900
TXT"teamviewer-sso-verification=dcf86c629621492a9c51bad2537be35d"900
TXT"teamviewer-sso-verification=e7046d86835e4379b121c489b751e736"900
TXT"v=spf1 redirect=8vqfcjz6._spf._d.mim.ec"900
TXT"webexdomainverification.49W8Y=29f972a0-7f60-4682-b514-719b54b00a34"900
TXT"webexdomainverification.49X3N=02c0152a-77f6-4797-8e51-4b0993c61a7f"900
TXT"webexdomainverification.49X74=f3e0ee88-0c4c-4c19-b4cb-1b2d9fb14a49"900
TXT"webexdomainverification.=516873c6-a408-45b3-98b1-b32e8d31d4a0"900
TXT"webexdomainverification.=85b92e33-59cd-458e-a2d9-afa64204ae79"900
TXT"webexdomainverification.=aea98557-1cef-4f23-bb89-5fdc3e14d6e3"900
TXT"webexdomainverification.=b54f35ee-6a51-4c24-a897-5c6b3414f61d"900
TXT"wiz-domain-verification=62034569295563365b461ee04ef58cc68d588e4cdc7bd8f957f619d722e22b86"900

Checks

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