maxthon.com

Checked 22 October 2026, 09:43 UTC · via 8.8.8.8
!Passed with warnings
23 passed 2 warnings 0 failed 6 info

Registration

info

.com generic · Xin Net Technology Corporation · expires 2027-05-01

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Xin Net Technology Corporation
Registered
1 May 2004
Last changed
2 March 2026
Expires
1 May 2027
Status
active
Registry nameservers
erin.ns.cloudflare.com, kellen.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 2027-05-01 #3
    The registration is valid until 2027-05-01 (191 days).
  • i
    No transfer lock
    The domain has no transfer lock (status: active). A registrar lock protects against unauthorized transfers.
    #4
  • ✓ Registry and delegation match #5
    The nameservers registered at the registry are the ones published in DNS.

Delegation

info

erin.ns.cloudflare.com, kellen.ns.cloudflare.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
erin.ns.cloudflare.com, kellen.ns.cloudflare.com
NS in the zone
erin.ns.cloudflare.com, kellen.ns.cloudflare.com
NameserverAddressesNetwork (AS)Glue
erin.ns.cloudflare.com108.162.192.113 173.245.58.113 172.64.32.113 2803:f800:50::6ca2:c071 2a06:98c1:50::ac40:2071 2606:4700:50::adf5:3a71AS13335 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., US108.162.192.113 172.64.32.113 173.245.58.113 2606:4700:50::adf5:3a71 2803:f800:50::6ca2:c071 2a06:98c1:50::ac40:2071
kellen.ns.cloudflare.com162.159.44.160 172.64.35.160 108.162.195.160 2a06:98c1:50::ac40:23a0 2606:4700:58::a29f:2ca0 2803:f800:50::6ca2:c3a0AS13335 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., US108.162.195.160 162.159.44.160 172.64.35.160 2606:4700:58::a29f:2ca0 2803:f800:50::6ca2:c3a0 2a06:98c1:50::ac40:23a0

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: erin.ns.cloudflare.com, kellen.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
erin.ns.cloudflare.com 108.162.192.113NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
erin.ns.cloudflare.com 173.245.58.113NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
erin.ns.cloudflare.com 172.64.32.113NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
erin.ns.cloudflare.com 2803:f800:50::6ca2:c071NOERROR, 25 ms, authoritativenoyes / yesrefused2026.10.2
erin.ns.cloudflare.com 2a06:98c1:50::ac40:2071NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
erin.ns.cloudflare.com 2606:4700:50::adf5:3a71NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
kellen.ns.cloudflare.com 162.159.44.160NOERROR, 32 ms, authoritativenoyes / yesrefused2026.10.2
kellen.ns.cloudflare.com 172.64.35.160NOERROR, 16 ms, authoritativenoyes / yesrefused2026.10.2
kellen.ns.cloudflare.com 108.162.195.160NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
kellen.ns.cloudflare.com 2a06:98c1:50::ac40:23a0NOERROR, 15 ms, authoritativenoyes / yesrefused2026.10.2
kellen.ns.cloudflare.com 2606:4700:58::a29f:2ca0NOERROR, 14 ms, authoritativenoyes / yesrefused2026.10.2
kellen.ns.cloudflare.com 2803:f800:50::6ca2:c3a0NOERROR, 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: erin.ns.cloudflare.com: "2026.10.2"; kellen.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 2415442892 · primary erin.ns.cloudflare.com

Found

Primary (MNAME)
erin.ns.cloudflare.com
Contact (RNAME)
dns.cloudflare.com
Serial
2415442892
Refresh / retry
10000 s / 2400 s
Expire
604800 s
Negative TTL
1800 s

Serial per nameserver

NameserverSerial
erin.ns.cloudflare.com (108.162.192.113)2415442892
erin.ns.cloudflare.com (173.245.58.113)2415442892
erin.ns.cloudflare.com (172.64.32.113)2415442892
erin.ns.cloudflare.com (2803:f800:50::6ca2:c071)2415442892
erin.ns.cloudflare.com (2a06:98c1:50::ac40:2071)2415442892
erin.ns.cloudflare.com (2606:4700:50::adf5:3a71)2415442892
kellen.ns.cloudflare.com (162.159.44.160)2415442892
kellen.ns.cloudflare.com (172.64.35.160)2415442892
kellen.ns.cloudflare.com (108.162.195.160)2415442892
kellen.ns.cloudflare.com (2a06:98c1:50::ac40:23a0)2415442892
kellen.ns.cloudflare.com (2606:4700:58::a29f:2ca0)2415442892
kellen.ns.cloudflare.com (2803:f800:50::6ca2:c3a0)2415442892

Checks

  • ✓ Serial 2415442892 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 erin.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 2415442892 is a Unix timestamp (2046-07-17 12:21 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

15 records at the apex

Found

Read from
108.162.192.113:53
TypeValueTTL
SOAerin.ns.cloudflare.com. dns.cloudflare.com. 2415442892 10000 2400 604800 18001800
NSerin.ns.cloudflare.com.86400
NSkellen.ns.cloudflare.com.86400
A172.66.169.196300
A104.20.34.56300
AAAA2606:4700:10::ac42:a9c4300
AAAA2606:4700:10::6814:2238300
MX10 mail.bitrabbit.sg.600
TXT"201811150708434x3ocs13bnzvkkv6b34i4z2pma6wn6k57k3fim9pnxodamuba6"600
TXT"202101191526215vozjzjpjqryx6t9t2241danhfj3llzz9y5py4cnzogjowcqln"600
TXT"202201231624544dy33kv80je705c2yusdpfwe0lqfxoxged1cq1aakm41wo84da"600
TXT"google-site-verification=QSKAfdCO5v68T0STu1xTrQWT1LvB6BveuU3HZArlpJY"600
TXT"google-site-verification=aDlPNLNHy4PcxjBLg9RGX8k0HKSQdlFjttCG9ZP-F2E"600
TXT"openai-domain-verification=dv-1svnJvys2Ltzreay2ggEajLD"600
TXT"v=spf1 mx include:mail.zendesk.com ip4:202.91.34.212 -all"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 5m, AAAA 5m, MX 10m, 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.
  • 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