joinhandshake.com

Checked 22 October 2026, 09:25 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 6 info

Registration

info

.com generic · NameCheap, Inc. · expires 2034-02-16

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
NameCheap, Inc.
Registered
16 February 2014
Last changed
24 June 2025
Expires
16 February 2034
Status
client transfer prohibited
Registry nameservers
piers.ns.cloudflare.com, reza.ns.cloudflare.com
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 2034-02-16 #3
    The registration is valid until 2034-02-16 (2673 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

piers.ns.cloudflare.com, reza.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
piers.ns.cloudflare.com, reza.ns.cloudflare.com
NS in the zone
piers.ns.cloudflare.com, reza.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
piers.ns.cloudflare.com162.159.44.16 108.162.195.16 172.64.35.16 2a06:98c1:50::ac40:2310 2606:4700:58::a29f:2c10 2803:f800:50::6ca2:c310AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.195.16 162.159.44.16 172.64.35.16 2606:4700:58::a29f:2c10 2803:f800:50::6ca2:c310 2a06:98c1:50::ac40:2310
reza.ns.cloudflare.com172.64.32.217 173.245.58.217 108.162.192.217 2803:f800:50::6ca2:c0d9 2606:4700:50::adf5:3ad9 2a06:98c1:50::ac40:20d9AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US AS13335 CLOUDFLARENET - Cloudflare, Inc., US108.162.192.217 172.64.32.217 173.245.58.217 2606:4700:50::adf5:3ad9 2803:f800:50::6ca2:c0d9 2a06:98c1:50::ac40:20d9

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: piers.ns.cloudflare.com, reza.ns.cloudflare.com.
    #6
  • ✓ 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 6 IPv4 /24s and 4 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS13335 (CLOUDFLARENET - Cloudflare, Inc., US): 12 addresses). An outage or attack on that network affects all nameservers; large anycast providers mitigate this, but a secondary DNS provider adds independence.
    #11
  • i
    All nameserver names under .com
    All nameserver names are under one TLD, so a problem with that TLD also makes the nameservers unreachable. Some operators use names under two TLDs for extra resilience.
    #12
  • ✓ All reachable over IPv6 #13
    Every nameserver has an IPv6 address.

Nameservers

warn

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
piers.ns.cloudflare.com 162.159.44.16NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
piers.ns.cloudflare.com 108.162.195.16NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
piers.ns.cloudflare.com 172.64.35.16NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
piers.ns.cloudflare.com 2a06:98c1:50::ac40:2310NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
piers.ns.cloudflare.com 2606:4700:58::a29f:2c10NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
piers.ns.cloudflare.com 2803:f800:50::6ca2:c310NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
reza.ns.cloudflare.com 172.64.32.217NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
reza.ns.cloudflare.com 173.245.58.217NOERROR, 17 ms, authoritativenoyes / yesrefused2026.10.2
reza.ns.cloudflare.com 108.162.192.217NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
reza.ns.cloudflare.com 2803:f800:50::6ca2:c0d9NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
reza.ns.cloudflare.com 2606:4700:50::adf5:3ad9NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
reza.ns.cloudflare.com 2a06:98c1:50::ac40:20d9NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2

Checks

  • ✓ All respond #14
    All 12 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.
  • !
    Software version disclosed
    These nameservers report their software version via version.bind/version.server, which helps attackers find known vulnerabilities: piers.ns.cloudflare.com: "2026.10.2"; reza.ns.cloudflare.com: "2026.10.2". Hide or replace the version string.
    #17
  • ✓ 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 2418018333 · primary piers.ns.cloudflare.com

Found

Primary (MNAME)
piers.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2418018333
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
piers.ns.cloudflare.com (162.159.44.16)2418018333
piers.ns.cloudflare.com (108.162.195.16)2418018333
piers.ns.cloudflare.com (172.64.35.16)2418018333
piers.ns.cloudflare.com (2a06:98c1:50::ac40:2310)2418018333
piers.ns.cloudflare.com (2606:4700:58::a29f:2c10)2418018333
piers.ns.cloudflare.com (2803:f800:50::6ca2:c310)2418018333
reza.ns.cloudflare.com (172.64.32.217)2418018333
reza.ns.cloudflare.com (173.245.58.217)2418018333
reza.ns.cloudflare.com (108.162.192.217)2418018333
reza.ns.cloudflare.com (2803:f800:50::6ca2:c0d9)2418018333
reza.ns.cloudflare.com (2606:4700:50::adf5:3ad9)2418018333
reza.ns.cloudflare.com (2a06:98c1:50::ac40:20d9)2418018333

Checks

  • ✓ Serial 2418018333 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 2h46m40s, retry 40m, expire 7d, negative TTL 30m.
  • ✓ Primary is a public nameserver #24
    The primary nameserver piers.ns.cloudflare.com is one of the listed nameservers.
  • ✓ Contact dns@cloudflare.com #25
    The SOA RNAME dns.cloudflare.com means dns@cloudflare.com.
  • ✓ Timestamp serial #26
    The serial 2418018333 is a Unix timestamp (2046-08-16 07:45 UTC).

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

38 records at the apex

Found

Read from
162.159.44.16:53
TypeValueTTL
SOApiers.ns.cloudflare.com. dns.cloudflare.com. 2418018333 10000 2400 604800 18001800
NSpiers.ns.cloudflare.com.86400
NSreza.ns.cloudflare.com.86400
A76.76.21.21600
MX10 mxa-0063cf01.gslb.pphosted.com.300
MX10 mxb-0063cf01.gslb.pphosted.com.300
TXT"8HDLGgMmbFFJ4Wgj"300
TXT"MS=ms92280729"300
TXT"TAILSCALE-bd0xOoq6cFcympjDQblr"300
TXT"_57qlbcf528huncptyv4h4y0jpjsoy2k"300
TXT"anthropic-domain-verification-0jh5ze=HoDUDWT8S67JdtYzVKSt59XhT"300
TXT"apple-domain-verification=RluM1U11LgfMreyo"300
TXT"atlassian-domain-verification=+LzQXsPqu5kgIeU0qfhEvAnyXIIfP5lgO0aYOwp/Q8rpEi1DtfUis6OGGZI2ldmf"300
TXT"code-storage-from-the-pierre-computer-company-domain-verification-yh8zvk=nDqZTZsU3RinwZJQueQbWfcCe"300
TXT"docusign=470160ca-ed5a-4709-8542-85a4833dd3c3"300
TXT"drift-domain-verification=5e887b191e22515ac31e030dcce7250dc9d443f64baea8216cec66bdcc6fc46e"300
TXT"google-site-verification=2xsZEuHbdi1a7deBDI7Tc94eBkbDp15of_4_G6lPQrY"300
TXT"google-site-verification=3OpLXHu9OivwLyRmfraS3ZHOfxD_ANJ4QwRQOUdm_wA"300
TXT"google-site-verification=TCeSNURrP_s6_k9ys2dapX96I0BnMJjSotpk-f-8T4I"300
TXT"google-site-verification=Wp-YpiSEhoNhve0EPK14OXdplGOBj-8_2ebJzD_2zX4"300
TXT"google-site-verification=Zm4c8TzzuTXUxYbI4djVPyVtVxI9j2lJPYcrb1u1e58"300
TXT"google-site-verification=dKLuQODGbOhWCfKcXnRULvYi71Of1OCyXMl_Uci8WpQ"300
TXT"google-site-verification=hXtVxFXi8hMIbAfB0p2y8lEa1_pKGFdhTOw6C1ByE-c"300
TXT"google-site-verification=krEmbRw0mODY5hVnPtN3lH4aCnSxtL6ofXL0LpCX5Po"300
TXT"google-site-verification=qydSS9GtEFP6ufM3Xt26-iTd9SButQRUw8tmXlMnWAg"300
TXT"google-site-verification=sTcuXBwq5THRZ-2mrOidiLEb4soTmnk4vy1rK9kuqkM"300
TXT"heroku-domain-verification=mbdhgam8kjwewpxny9ksntr8moza1ldext77ptxiy"300
TXT"linear-domain-verification=82wpwcwyjeuc"300
TXT"mailtrap-verification=3785b7fa01f7f3714e48cd68580e94373c6ea75bfdd5975cede7d7846dfd6050"300
TXT"mgverify=dc19ff6eefea9dcff3bb94f3046107aa3b0457b062bdf80510791550c2813eb6"300
TXT"notion-domain-verification=EJK5EfwNZzAY52sitaZFSppdez0j8QA5MXAps0XeYlq"300
TXT"onetrust-domain-verification=2d1a44dd29d14e87800b627b730b54e7"300
TXT"segment-site-verification=yjlVdUiMxCMmrlu5rcK7aqsKFYZGEcLe"300
TXT"slack-domain-verification=GfwiK1ELcUCTqysDMmcoTUpivZCwnAIFfg5SxKDi"300
TXT"stripe-verification=032063d78a075d8aeb2e8a937e3b42cb6fa443a25659c880a657db40349f329b"300
TXT"stripe-verification=63fe5546928a1bc436555543c01029d983c34d2ff9c18a71eacd570edfbf0ea2"300
TXT"v=spf1 include:%{i}._ip.%{h}._ehlo.%{d}._spf.vali.email include:mail.zendesk.com include:_spf.google.com include:mktomail.com ~all"300
TXT"zapier-domain-verification-challenge=679d9a2a-e453-44f7-9b11-bd6448c4ff82"300

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, 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.
  • i
    Wildcard record
    A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.
    #34
  • 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