pistonheads.com

Checked 22 October 2026, 10:14 UTC · via 8.8.8.8
!Passed with warnings
26 passed 2 warnings 0 failed 3 info

Registration

info

.com generic · GoDaddy.com, LLC · expires 2027-08-02

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
GoDaddy.com, LLC
Registered
2 August 1999
Last changed
28 January 2025
Expires
2 August 2027
Status
client delete prohibited, client renew prohibited, client transfer prohibited, client update prohibited
Registry nameservers
ns-1291.awsdns-33.org, ns-1590.awsdns-06.co.uk, ns-481.awsdns-60.com, ns-716.awsdns-25.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 2027-08-02 #3
    The registration is valid until 2027-08-02 (283 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-1291.awsdns-33.org, ns-1590.awsdns-06.co.uk, ns-481.awsdns-60.com, ns-716.awsdns-25.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns-1291.awsdns-33.org, ns-1590.awsdns-06.co.uk, ns-481.awsdns-60.com, ns-716.awsdns-25.net
NS in the zone
ns-1291.awsdns-33.org, ns-1590.awsdns-06.co.uk, ns-481.awsdns-60.com, ns-716.awsdns-25.net
NameserverAddressesNetwork (AS)Glue
ns-1291.awsdns-33.org205.251.197.11 2600:9000:5305:b00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-1590.awsdns-06.co.uk205.251.198.54 2600:9000:5306:3600::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-
ns-481.awsdns-60.com205.251.193.225 2600:9000:5301:e100::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US205.251.193.225 2600:9000:5301:e100::1
ns-716.awsdns-25.net205.251.194.204 2600:9000:5302:cc00::1AS16509 AMAZON-02 - Amazon.com, Inc., US AS16509 AMAZON-02 - Amazon.com, Inc., US-

Checks

  • ✓ 4 nameservers #6
    Delegated to ns-1291.awsdns-33.org, ns-1590.awsdns-06.co.uk, ns-481.awsdns-60.com, ns-716.awsdns-25.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-1291.awsdns-33.org 205.251.197.11NOERROR, 3 ms, authoritativenoyes / yesrefused-
ns-1291.awsdns-33.org 2600:9000:5305:b00::1NOERROR, 7 ms, authoritativenoyes / yesrefused-
ns-1590.awsdns-06.co.uk 205.251.198.54NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-1590.awsdns-06.co.uk 2600:9000:5306:3600::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-481.awsdns-60.com 205.251.193.225NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-481.awsdns-60.com 2600:9000:5301:e100::1NOERROR, 9 ms, authoritativenoyes / yesrefused-
ns-716.awsdns-25.net 205.251.194.204NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns-716.awsdns-25.net 2600:9000:5302:cc00::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 2013012301 · primary ns-1590.awsdns-06.co.uk

Found

Primary (MNAME)
ns-1590.awsdns-06.co.uk
Contact (RNAME)
awsdns-hostmaster.amazon.com
Serial
2013012301
Refresh / retry
7200 s / 900 s
Expire
1209600 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns-1291.awsdns-33.org (205.251.197.11)2013012301
ns-1291.awsdns-33.org (2600:9000:5305:b00::1)2013012301
ns-1590.awsdns-06.co.uk (205.251.198.54)2013012301
ns-1590.awsdns-06.co.uk (2600:9000:5306:3600::1)2013012301
ns-481.awsdns-60.com (205.251.193.225)2013012301
ns-481.awsdns-60.com (2600:9000:5301:e100::1)2013012301
ns-716.awsdns-25.net (205.251.194.204)2013012301
ns-716.awsdns-25.net (2600:9000:5302:cc00::1)2013012301

Checks

  • ✓ Serial 2013012301 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-1590.awsdns-06.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 2013012301 follows the YYYYMMDDnn convention (2013-01-23).

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

34 records at the apex

Found

Read from
205.251.197.11:53
TypeValueTTL
SOAns-1590.awsdns-06.co.uk. awsdns-hostmaster.amazon.com. 2013012301 7200 900 1209600 8640086400
NSns-1291.awsdns-33.org.3600
NSns-1590.awsdns-06.co.uk.3600
NSns-481.awsdns-60.com.3600
NSns-716.awsdns-25.net.3600
A13.35.58.5060
A13.35.58.11260
A13.35.58.8260
A13.35.58.5160
MX1 aspmx.l.google.com.60
MX5 alt1.aspmx.l.google.com.60
TXT"00D4S000000Go4R=1TBPX00000006lN"300
TXT"00DOt000010tbkn=1TBOt0000000aeb"300
TXT"MS=ms99209143"300
TXT"adobe-idp-site-verification=80ed324f0e9f92cbffb4fe15af5fb072952893d20653c77e87b8d6ed39816d4c"300
TXT"anthropic-domain-verification-mmz8m2=0t2EXrPdN1DSJ23pmsHVywadK"300
TXT"apple-domain-verification=2G9r4p3TyWvWEORg3upJIamWPRg6IrBJA-PNkOOoOaE"300
TXT"apple-domain-verification=fdZZXyiqo7FlHNRSl1d89rVkcOL31g-QRYgdKSgrm8Y"300
TXT"atlassian-domain-verification=WyWv3Pkh1jmyHexM5sAQeVgw7/8GnwlIWaeqV3EKv206FEtbdEP6h7I8Ehzqax7a"300
TXT"cursor-domain-verification-w9wmm4=4Z70ITVgQc2QqdKcDSAcy3PjD"300
TXT"dropbox-domain-verification=z11hwdxgkofy"300
TXT"facebook-domain-verification=7l1o0llxdgd5l9qi3lezmp8kfejato"300
TXT"google-site-verification=CoG6F60cCpo7e-48dVHsoRqRwoNKbacALb15p3M9G3U"300
TXT"google-site-verification=iniNBCQdNJjmBNcMv0PtkJO_NoaJ9mqycO_uVj0sdS8"300
TXT"google-site-verification=sfWZ_7tIyAFv2bubrLjm8Qlgoz7xxiC6iHqj166rNas"300
TXT"google-site-verification=siDOrVJ-hn_lho6GUCKZ-QE3Z_dEL8bQTjGpuP2ylvc"300
TXT"google-site-verification=vDYuHUGPVG9Us21lWPq56LJuAWhbzKdjyhdbg7S77IQ"300
TXT"google-site-verification=vSE5lN5ig8UDqinHV8sU0XOf5jmPz8FK8GhIHKuMo1w"300
TXT"knowbe4-site-verification=84f79998611c8ef48d6f32765efbe92a"300
TXT"miro-verification=6a604e86ba60fa691b35cb76e21f3959703ae8f5"300
TXT"stripe-verification=2bffc61ba02e4cefee685ed95c45146eb41c34d4667b36e74a5419933b62aa1f"300
TXT"twilio-domain-verification=3e32e381c0d9c5c12fa204253b870223"300
TXT"v=spf1 include:_spf.google.com ip4:195.225.218.69 -all"300
TXT"zscaler-verification-164045593-18082026-qmq4gk3ok2"300

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m), MX (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