superhuman.com

Checked 22 October 2026, 10:53 UTC · via 8.8.8.8
!Passed with warnings
25 passed 2 warnings 0 failed 4 info

Registration

info

.com generic · Cloudflare, Inc. · expires 2034-11-24

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Cloudflare, Inc.
Registered
24 November 1999
Last changed
13 November 2025
Expires
24 November 2034
Status
client transfer prohibited
Registry nameservers
ada.ns.cloudflare.com, noah.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 2034-11-24 #3
    The registration is valid until 2034-11-24 (2955 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

ada.ns.cloudflare.com, noah.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ada.ns.cloudflare.com, noah.ns.cloudflare.com
NS in the zone
ada.ns.cloudflare.com, noah.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
ada.ns.cloudflare.com108.162.192.54 172.64.32.54 173.245.58.54 2a06:98c1:50::ac40:2036 2803:f800:50::6ca2:c036 2606:4700:50::adf5:3a36AS13335 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., US108.162.192.54 172.64.32.54 173.245.58.54 2606:4700:50::adf5:3a36 2803:f800:50::6ca2:c036 2a06:98c1:50::ac40:2036
noah.ns.cloudflare.com172.64.33.133 108.162.193.133 173.245.59.133 2a06:98c1:50::ac40:2185 2803:f800:50::6ca2:c185 2606:4700:58::adf5:3b85AS13335 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., US108.162.193.133 172.64.33.133 173.245.59.133 2606:4700:58::adf5:3b85 2803:f800:50::6ca2:c185 2a06:98c1:50::ac40:2185

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ada.ns.cloudflare.com, noah.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
ada.ns.cloudflare.com 108.162.192.54NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
ada.ns.cloudflare.com 172.64.32.54NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
ada.ns.cloudflare.com 173.245.58.54NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
ada.ns.cloudflare.com 2a06:98c1:50::ac40:2036NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
ada.ns.cloudflare.com 2803:f800:50::6ca2:c036NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
ada.ns.cloudflare.com 2606:4700:50::adf5:3a36NOERROR, 5 ms, authoritativenoyes / yesrefused2026.10.2
noah.ns.cloudflare.com 172.64.33.133NOERROR, 4 ms, authoritativenoyes / yesrefused2026.10.2
noah.ns.cloudflare.com 108.162.193.133NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
noah.ns.cloudflare.com 173.245.59.133NOERROR, 8 ms, authoritativenoyes / yesrefused2026.10.2
noah.ns.cloudflare.com 2a06:98c1:50::ac40:2185NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
noah.ns.cloudflare.com 2803:f800:50::6ca2:c185NOERROR, 6 ms, authoritativenoyes / yesrefused2026.10.2
noah.ns.cloudflare.com 2606:4700:58::adf5:3b85NOERROR, 5 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: ada.ns.cloudflare.com: "2026.10.2"; noah.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 2417928201 · primary ada.ns.cloudflare.com

Found

Primary (MNAME)
ada.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2417928201
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
ada.ns.cloudflare.com (108.162.192.54)2417928201
ada.ns.cloudflare.com (172.64.32.54)2417928201
ada.ns.cloudflare.com (173.245.58.54)2417928201
ada.ns.cloudflare.com (2a06:98c1:50::ac40:2036)2417928201
ada.ns.cloudflare.com (2803:f800:50::6ca2:c036)2417928201
ada.ns.cloudflare.com (2606:4700:50::adf5:3a36)2417928201
noah.ns.cloudflare.com (172.64.33.133)2417928201
noah.ns.cloudflare.com (108.162.193.133)2417928201
noah.ns.cloudflare.com (173.245.59.133)2417928201
noah.ns.cloudflare.com (2a06:98c1:50::ac40:2185)2417928201
noah.ns.cloudflare.com (2803:f800:50::6ca2:c185)2417928201
noah.ns.cloudflare.com (2606:4700:58::adf5:3b85)2417928201

Checks

  • ✓ Serial 2417928201 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 ada.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 2417928201 is a Unix timestamp (2046-08-15 06:43 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

pass

54 records at the apex

Found

Read from
108.162.192.54:53
TypeValueTTL
SOAada.ns.cloudflare.com. dns.cloudflare.com. 2417928201 10000 2400 604800 18001800
NSada.ns.cloudflare.com.86400
NSnoah.ns.cloudflare.com.86400
A104.18.2.84300
A104.18.3.84300
AAAA2606:4700::6812:254300
AAAA2606:4700::6812:354300
MX1 aspmx.l.google.com.300
MX10 alt3.aspmx.l.google.com.300
MX10 alt4.aspmx.l.google.com.300
MX5 alt1.aspmx.l.google.com.300
MX5 alt2.aspmx.l.google.com.300
TXT"MS=C5CE32BADE9081CC851BF89790E770AD8DD7D581"60
TXT"ZOOM_verify_Iw0D0rStolfMdzOct27DUf"60
TXT"ZOOM_verify_NWa26v5pkZ2hD4oTsSOLfj"60
TXT"anthropic-domain-verification-xdqvbf=Nh07nj176sGhr280rWcjntJgq"60
TXT"anthropic-domain-verification-zq3hcj=y9QFHEVC3K3hUm2Y28oNFVaik"60
TXT"apple-domain-verification=L5TsMvPE5lint9t8"60
TXT"atlassian-domain-verification=T3V99zvc7AiXusvItE/JcUDQSnhMNa0DEowuAU3NDMgg4MVMe/GjePD9ulPhYNdd"60
TXT"atlassian-domain-verification=whH-NvC3ViXrafg4bTERPBlxvBNLVWD0xV5WbI2C9ZtubXKcXRh2s"60
TXT"atlassian-domain-verification=whH-NvC3ViXrafg4bTERPBlxvBNLVWD0xV5WbI2C9ZtubXKcXRh2sa07+lKL0C/X"60
TXT"bitrise-verification=1792a4c5cc853b98-ImyYm6Mc76ZP"60
TXT"doordash-verification=w8OE181osAIeRyp7X71jllkW8qgsCP"60
TXT"dropbox-domain-verification=f3lrswnxggjq"60
TXT"facebook-domain-verification=c64124090qkkaufcw2shwhvjwopfet"60
TXT"google-site-verification=2BMFq37WzNgNdgMSv9CYCiL_LJo9jS4oj5YcVLxYCfo"60
TXT"google-site-verification=LxfkvD2pjlxxE9Z2d0mwDcnloSCq2D5zrk1sakFygFc"60
TXT"google-site-verification=VSicLQx5rht5JTiFxaU6yNI_ETBzj4zqQ0B-WaCYanE"60
TXT"google-site-verification=Xe5jL5k7wonaGE4uNWeazrJF3IsWbwWySYSVq4sF3Ao"60
TXT"google-site-verification=ZBYNNipU21LI6QXdVffdKxK9YI5ndfS4q2K3mVKAd84"60
TXT"google-site-verification=_0iPMzI9BIzhVRRwfp8GSgA1CMIVQl3GvVPydYjvxTE"60
TXT"google-site-verification=gCU5zAYZ6HlgbFNh7LDVJGlYIOSVERblRJGzkbpLcCk"60
TXT"google-site-verification=iSubgtvGu9r_GlBzlZObOHlaZ-SY_8XGSN6ywbJk7lc"60
TXT"hubspot-developer-verification=ZGNlZDBkNjAtNjFmMS00YmViLWI1MmYtYWM3NGJhZDkwMjI2"60
TXT"launchdarkly-domain-verification=b1611f55-3b33-4458-898d-ae9d1626487a"60
TXT"linear-domain-verification=556154"60
TXT"linear-domain-verification=p5i5982mzwk8"60
TXT"notion-domain-verification=on9GBEf5aJOLD3UC8YXwjL4CkXsUH8W20LMUXtgVfGU"60
TXT"openai-domain-verification=dv-uxAVvSXWmvJOOZzEIC8ZTMJJ"60
TXT"profound-domain-verification-4syeej=Ae2BoPG22b4axuQ4dbohe1hxh"60
TXT"sending_domain894581=97ac641bdd9ff795faff0f347bf30794ccef73f87001bf764ce5d8fb13e8b784"60
TXT"stripe-verification=643f14b6063c1acd9171fa7ceb0721ba870a98691e4ec5495a7bfc6167cdc3a5"60
TXT"v=spf1 include:_spf.google.com include:_s00152389.autospf.email -all"60
TXT"zapier-domain-verification-challenge=f9897622-8346-4dfc-960a-5d993338dc0a"60
CAA0 issue "comodoca.com"3600
CAA0 issue "digicert.com; cansignhttpexchanges=yes"3600
CAA0 issue "letsencrypt.org"3600
CAA0 issue "pki.goog; cansignhttpexchanges=yes"3600
CAA0 issue "ssl.com"3600
CAA0 issuewild "comodoca.com"3600
CAA0 issuewild "digicert.com; cansignhttpexchanges=yes"3600
CAA0 issuewild "letsencrypt.org"3600
CAA0 issuewild "pki.goog; cansignhttpexchanges=yes"3600
CAA0 issuewild "ssl.com"3600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, 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.
  • ✓ CAA restricts issuance #35
    Certificates may be issued by: comodoca.com, digicert.com, letsencrypt.org, pki.goog, ssl.com.