jetbrains.com

Checked 22 October 2026, 09:23 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

.com generic · Network Solutions, LLC · expires 2028-11-09

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Network Solutions, LLC
Registered
9 November 2001
Last changed
10 November 2018
Expires
9 November 2028
Status
client transfer prohibited
Registry nameservers
ns-1519.awsdns-61.org, ns-1701.awsdns-20.co.uk, ns-345.awsdns-43.com, ns-613.awsdns-12.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 2028-11-09 #3
    The registration is valid until 2028-11-09 (749 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-1519.awsdns-61.org, ns-1701.awsdns-20.co.uk, ns-345.awsdns-43.com, ns-613.awsdns-12.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1519.awsdns-61.org, ns-1701.awsdns-20.co.uk, ns-345.awsdns-43.com, ns-613.awsdns-12.net
NS in the zone
ns-1519.awsdns-61.org, ns-1701.awsdns-20.co.uk, ns-345.awsdns-43.com, ns-613.awsdns-12.net
NameserverAddressesNetwork (AS)Glue
ns-1519.awsdns-61.org205.251.197.239 2600:9000:5305:ef00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1701.awsdns-20.co.uk205.251.198.165 2600:9000:5306:a500::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-345.awsdns-43.com205.251.193.89 2600:9000:5301:5900::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.89 2600:9000:5301:5900::1
ns-613.awsdns-12.net205.251.194.101 2600:9000:5302:6500::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1519.awsdns-61.org, ns-1701.awsdns-20.co.uk, ns-345.awsdns-43.com, ns-613.awsdns-12.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-1519.awsdns-61.org 205.251.197.239NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1519.awsdns-61.org 2600:9000:5305:ef00::1NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-1701.awsdns-20.co.uk 205.251.198.165NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1701.awsdns-20.co.uk 2600:9000:5306:a500::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-345.awsdns-43.com 205.251.193.89NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-345.awsdns-43.com 2600:9000:5301:5900::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-613.awsdns-12.net 205.251.194.101NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-613.awsdns-12.net 2600:9000:5302:6500::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 2019122401 · primary ns-1701.awsdns-20.co.uk

Found

Primary (MNAME)
ns-1701.awsdns-20.co.uk
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
2019122401
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1519.awsdns-61.org (205.251.197.239)2019122401
ns-1519.awsdns-61.org (2600:9000:5305:ef00::1)2019122401
ns-1701.awsdns-20.co.uk (205.251.198.165)2019122401
ns-1701.awsdns-20.co.uk (2600:9000:5306:a500::1)2019122401
ns-345.awsdns-43.com (205.251.193.89)2019122401
ns-345.awsdns-43.com (2600:9000:5301:5900::1)2019122401
ns-613.awsdns-12.net (205.251.194.101)2019122401
ns-613.awsdns-12.net (2600:9000:5302:6500::1)2019122401

Checks

  • ✓ Serial 2019122401 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-1701.awsdns-20.co.uk is one of the listed nameservers.
  • ✓ Contact awsdns-hostmaster@amazon.com #25
    The SOA RNAME awsdns-hostmaster.amazon.com means awsdns-hostmaster@amazon.com.
  • ✓ Date-based serial #26
    The serial 2019122401 follows the YYYYMMDDnn convention (2019-12-24).

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

33 records at the apex

Found

Read from
205.251.197.239:53
TypeValueTTL
SOAns-1701.awsdns-20.co.uk. awsdns-hostmaster.amazon.com. 2019122401 7200 900 1209600 86400300
NSns-1519.awsdns-61.org.172800
NSns-1701.awsdns-20.co.uk.172800
NSns-345.awsdns-43.com.172800
NSns-613.awsdns-12.net.172800
A3.167.227.12360
A3.167.227.11060
A3.167.227.8960
A3.167.227.7060
MX1 aspmx.l.google.com.7200
MX10 alt3.aspmx.l.google.com.7200
MX10 alt4.aspmx.l.google.com.7200
MX5 alt1.aspmx.l.google.com.7200
MX5 alt2.aspmx.l.google.com.7200
TXT"2r108541pocsrgv2ee4k4palbt"1800
TXT"_r4pqu4ex9pljicqdyuy4eotrck5oodr"1800
TXT"airtable-verification=2596e1bb140b4e035d2a8e41e276a383"1800
TXT"anthropic-domain-verification-t2jwja=Ax8GJYbCx2Uaq35MjKnH9Z5Rd"1800
TXT"astro-domain-verification=cm9v85qao05zd01hvhwwuzss6"1800
TXT"asv=2c6f6f1d4f86fdcfd7f783fbc213c156"1800
TXT"cursor-domain-verification-kx5zm3=EHhTysB79O0oaoxmuZlbgfJYw"1800
TXT"docusign=51868e95-4167-4467-8c5d-aae4fe1dcdae"1800
TXT"facebook-domain-verification=0f998tvqo94ievfo428kabcvdycn9h"1800
TXT"google-site-verification=6itcxahei-MfNED1Q1oqRy251pbo8AMzq9wHO47vrG0"1800
TXT"google-site-verification=mb2teCgiotyAsJVve9zLVfcQgW0AxPzkyDFPV7h0jq8"1800
TXT"google-site-verification=rO0Vqzw1ONvxllSXDHAiBawvsUiZtN-aMUGBG-FZAHE"1800
TXT"miro-verification=d4eb88433fcbdf6060863c42a891b879673ba5da"1800
TXT"openai-domain-verification=dv-1fZwLd26bBnn07NffqaJZ6r0"1800
TXT"parallels-domain-verification=f2018ea7be8b4bacb7f159a7ef97c616644c16c842c84e7e9737ca8b4859b226"1800
TXT"slack-domain-verification=1SpvUQkKFcyXCGyrQbWXJOlPu9ALQ4L1RuS7ALjB"1800
TXT"spf2.0/pra"1800
TXT"v=spf1 ip4:46.137.178.215 ip4:185.28.196.44 include:_spf.google.com include:mail.zendesk.com include:app.sgizmo.com include:_spf_jpf.jetbrains.com -all"1800
TXT"yahoo-verification-key=FeFiNspylJnrSEIVSLEjBcfyUINn3/Qt7ZnZhcfoZfY="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.
  • ✓ 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