jamf.com

Checked 22 October 2026, 09:23 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 2027-01-24

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Amazon Registrar, Inc.
Registered
24 January 2005
Last changed
15 May 2026
Expires
24 January 2027
Status
client transfer prohibited
Registry nameservers
ns-1199.awsdns-21.org, ns-1582.awsdns-05.co.uk, ns-27.awsdns-03.com, ns-943.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 2027-01-24 #3
    The registration is valid until 2027-01-24 (94 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-1199.awsdns-21.org, ns-1582.awsdns-05.co.uk, ns-27.awsdns-03.com, ns-943.awsdns-53.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1199.awsdns-21.org, ns-1582.awsdns-05.co.uk, ns-27.awsdns-03.com, ns-943.awsdns-53.net
NS in the zone
ns-1199.awsdns-21.org, ns-1582.awsdns-05.co.uk, ns-27.awsdns-03.com, ns-943.awsdns-53.net
NameserverAddressesNetwork (AS)Glue
ns-1199.awsdns-21.org205.251.196.175 2600:9000:5304:af00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1582.awsdns-05.co.uk205.251.198.46 2600:9000:5306:2e00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-27.awsdns-03.com205.251.192.27 2600:9000:5300:1b00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.192.27 2600:9000:5300:1b00::1
ns-943.awsdns-53.net205.251.195.175 2600:9000:5303:af00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1199.awsdns-21.org, ns-1582.awsdns-05.co.uk, ns-27.awsdns-03.com, ns-943.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-1199.awsdns-21.org 205.251.196.175NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1199.awsdns-21.org 2600:9000:5304:af00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1582.awsdns-05.co.uk 205.251.198.46NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1582.awsdns-05.co.uk 2600:9000:5306:2e00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-27.awsdns-03.com 205.251.192.27NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-27.awsdns-03.com 2600:9000:5300:1b00::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-943.awsdns-53.net 205.251.195.175NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-943.awsdns-53.net 2600:9000:5303:af00::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-27.awsdns-03.com

Found

Primary (MNAME)
ns-27.awsdns-03.com
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-1199.awsdns-21.org (205.251.196.175)1
ns-1199.awsdns-21.org (2600:9000:5304:af00::1)1
ns-1582.awsdns-05.co.uk (205.251.198.46)1
ns-1582.awsdns-05.co.uk (2600:9000:5306:2e00::1)1
ns-27.awsdns-03.com (205.251.192.27)1
ns-27.awsdns-03.com (2600:9000:5300:1b00::1)1
ns-943.awsdns-53.net (205.251.195.175)1
ns-943.awsdns-53.net (2600:9000:5303:af00::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-27.awsdns-03.com 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
11226ECDSAP256SHA256 (13)SHA256 679BE464EEDCA24D…yes

DNSKEY in the zone

Key tagRoleAlgorithm
37768ZSK (256)ECDSAP256SHA256 (13)
37044ZSK (256)ECDSAP256SHA256 (13)
11226KSK (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 11226 (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 08:23 UTC and expires at 2026-10-22 10:38 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

43 records at the apex

Found

Read from
205.251.196.175:53
TypeValueTTL
SOAns-27.awsdns-03.com. awsdns-hostmaster.amazon.com. 1 7200 900 1209600 300900
NSns-1199.awsdns-21.org.3600
NSns-1582.awsdns-05.co.uk.3600
NSns-27.awsdns-03.com.3600
NSns-943.awsdns-53.net.3600
A54.146.115.9760
A34.224.118.3160
A3.217.74.9860
MX0 jamf-com.mail.protection.outlook.com.3600
TXT"1fc0f790e87d9aef536e243365e0ca8c15be57ce9c47a428e768f8de7de88182"300
TXT"2185B42E9C"300
TXT"2CDzUv8V=85a588b36dd12a597ca2ea63fbc5351c"300
TXT"MS=ms81149483"300
TXT"ZOOM_verify_nyhVNK98TECKzkW2rSz9uw"300
TXT"adobe-idp-site-verification=135eb7cf8d0efcd86186cd89db0e36e3c522bbd0bafeaac62d6b9f470c306bac"300
TXT"anthropic-domain-verification-2qafk4=gkgOCzZCv3k6AFNRs3raauy8I"300
TXT"apple-domain-verification=ai4UY894qyDXezkq"300
TXT"apple-domain-verification=eTm10oqY5sezm1zV"300
TXT"apple-domain-verification=gxOKyOhfguNQHVoj"300
TXT"atlassian-domain-verification=dTW+pNNKg3lBylfaNSEylrolUpz9b3HsV0D3ye7StftJ4uBGiWzdwcqk3XyZmSre"300
TXT"bugcrowd-verification=24b5284459f175104c275224c29ab45f"300
TXT"ciscocidomainverification=1400a9b3e7c3c3dc52ffd7f514ec69a781184f4512dff9c4fb36b26ac16cb87" "google-site-verification=KMjiqC5TsPI8nuY-Hh32HMRIXWmfS3LLUZdv3uRbUSk"300
TXT"docker-verification=c14840ff-fc92-4cd0-ab0e-ef33fd4463b8"300
TXT"docusign=abee20a8-d1f2-4de5-856e-5c1ba339bb67"300
TXT"drift-domain-verification=22b3eba79efee846a34ac5da7e2c8e50277011eef710b1f79866397d67ed39e7"300
TXT"dropbox-domain-verification=du8ross271rn"300
TXT"ecostruxure-it-verification=3089137a-2435-43dc-baa9-ccaeab05a760"300
TXT"google-site-verification=vNCH8kyTUizVCa5G-52r73QSR-k-N0fJ4ZJuWcrEbpg"300
TXT"intersight=ad2814a80a293c8b219485b326a3d918ba7106c9b42bd46c610d1038b93f2fce"300
TXT"ip4:192.174.90.242"300
TXT"jamf-site-verification=fHEpTVE1AGyqu5TsLsSMaw"300
TXT"logmein-verification-code=9242a9b5-dc90-4a6d-b14a-1829e8eb6513"300
TXT"miro-verification=ca5788e1b438ca83f8fe58b3d7bb68d139bcad42"300
TXT"mongodb-site-verification=ght7IDD62UqkhS4Ppu9rS5PU6bTUOWWD"300
TXT"onetrust-domain-verification=77eb84e504624bb4aeab142d5722d06f"300
TXT"postman-domain-verification=9cca8b0a31e60ccf903cc2d112335f16a96d9af448d960975e24310a4514d1ca318ef07fcc9d45ba23d2a9fe781b1aa977374ee49be313e7f8ed9b73d3eda38d"300
TXT"segment-site-verification=JghykzFCKhun2qloXi5mB8cV5d5txvUE"300
TXT"slack-domain-verification=CBcGuwhIuLnK6FsbYqGe5XXnXMjZtOHIXJDXcbzg"300
TXT"stripe-verification=B1E02EB0ED0C145886FD2F29607CE364DECD05343F4FF14E7AC770A7CD9A12D8"300
TXT"teamviewer-sso-verification=1746b9d01202445aa61972601be4a550"300
TXT"v=spf1 ip4:71.13.172.133 ip4:67.225.195.119 ip4:52.38.191.241 ip4:198.21.2.94 ip4:167.89.80.72 ip4:198.2.187.217 ip4:159.183.197.119 ip4:167.89.75.111 ip4:167.89.84.155 include:spf.protection.outlook.com" " include:mktomail.com include:_spf.salesforce.com include:spf.mandrillapp.com include:spf_c.oraclecloud.com include:amazonses.com include:mail.intercom.io ~all"300
TXT"zoom-domain-verification = {5cb0a18e-c3e9-4e06-b7e6-c0e3ad3629bc}"300
TXT"zscaler-verification-214185-432026-PYA6Qol9f4"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 1h; 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