xn--pssw46az6cqs3a.com

Checked 22 October 2026, 11:35 UTC · via 8.8.8.8
✗Problems found
23 passed 2 warnings 1 failed 5 info

Registration

info

.com generic · Xiamen ChinaSource Internet Service Co., Ltd · expires 2032-05-06

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Xiamen ChinaSource Internet Service Co., Ltd
Registered
6 May 2022
Last changed
9 May 2022
Expires
6 May 2032
Status
client transfer prohibited
Registry nameservers
ns1.cnolnic.net, ns2.cnolnic.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 2032-05-06 #3
    The registration is valid until 2032-05-06 (2022 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

ns1.cnolnic.net, ns2.cnolnic.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.cnolnic.net, ns2.cnolnic.net
NS in the zone
ns1.cnolnic.net, ns2.cnolnic.net
NameserverAddressesNetwork (AS)Glue
ns1.cnolnic.net182.61.7.97 106.13.136.254 240c:4082:0:5d80::2AS38365 Baidu - Beijing Baidu Netcom Science and Technology Co., Ltd., CN AS38365 Baidu - Beijing Baidu Netcom Science and Technology Co., Ltd., CN AS38365 Baidu - Beijing Baidu Netcom Science and Technology Co., Ltd., CN-
ns2.cnolnic.net180.76.132.69 106.12.41.177 240c:4081:8000:1702::3AS38365 Baidu - Beijing Baidu Netcom Science and Technology Co., Ltd., CN AS38365 Baidu - Beijing Baidu Netcom Science and Technology Co., Ltd., CN AS38365 Baidu - Beijing Baidu Netcom Science and Technology Co., Ltd., CN-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.cnolnic.net, ns2.cnolnic.net.
    #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 4 IPv4 /24s and 2 IPv6 /48s.
  • i
    All nameservers in one AS
    All nameserver addresses are announced by one network operator (AS38365 (Baidu - Beijing Baidu Netcom Science and Technology Co., Ltd., CN): 6 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 .net
    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

6 of 6 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.cnolnic.net 182.61.7.97NOERROR, 200 ms, authoritativenoyes / yesrefusedChinaSource 4.0.0
ns1.cnolnic.net 106.13.136.254NOERROR, 150 ms, authoritativenoyes / yesrefusedChinaSource 4.0.0
ns1.cnolnic.net 240c:4082:0:5d80::2NOERROR, 153 ms, authoritativenoyes / yesrefusedChinaSource 4.0.0
ns2.cnolnic.net 180.76.132.69NOERROR, 158 ms, authoritativenoyes / yesrefusedChinaSource 4.0.0
ns2.cnolnic.net 106.12.41.177NOERROR, 182 ms, authoritativenoyes / yesrefusedChinaSource 4.0.0
ns2.cnolnic.net 240c:4081:8000:1702::3NOERROR, 139 ms, authoritativenoyes / yesrefusedChinaSource 4.0.0

Checks

  • ✓ All respond #14
    All 6 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: ns1.cnolnic.net: "ChinaSource 4.0.0"; ns2.cnolnic.net: "ChinaSource 4.0.0". 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 2006112401 · primary ns1.cnolnic.net

Found

Primary (MNAME)
ns1.cnolnic.net
Contact (RNAME)
root.cnolnic.net
Serial
2006112401
Refresh / retry
10800 s / 3600 s
Expire
604800 s
Negative TTL
86400 s

Serial per nameserver

NameserverSerial
ns1.cnolnic.net (182.61.7.97)2006112401
ns1.cnolnic.net (106.13.136.254)2006112401
ns1.cnolnic.net (240c:4082:0:5d80::2)2006112401
ns2.cnolnic.net (180.76.132.69)2006112401
ns2.cnolnic.net (106.12.41.177)2006112401
ns2.cnolnic.net (240c:4081:8000:1702::3)2006112401

Checks

  • ✓ Serial 2006112401 everywhere #22
    All nameservers serve the same version of the zone.
  • ✓ Timers within recommendations #23
    SOA refresh 3h, retry 1h, expire 7d, negative TTL 1d.
  • ✓ Primary is a public nameserver #24
    The primary nameserver ns1.cnolnic.net is one of the listed nameservers.
  • ✓ Contact root@cnolnic.net #25
    The SOA RNAME root.cnolnic.net means root@cnolnic.net.
  • ✓ Date-based serial #26
    The serial 2006112401 follows the YYYYMMDDnn convention (2006-11-24).

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

fail

3 records at the apex

Found

Read from
182.61.7.97:53
TypeValueTTL
SOAns1.cnolnic.net. root.cnolnic.net. 2006112401 10800 3600 604800 86400600
NSns2.cnolnic.net.600
NSns1.cnolnic.net.600

Checks

  • ✓ TTLs within range #32
    TTLs: NS 10m. The NS TTL at the parent is 2d and in the zone 10m; resolvers may use either.
  • ✗
    CNAME at the apex
    The zone apex is a CNAME to dagehj1.sh19.host.35.cn. A CNAME can't coexist with the SOA and NS records (RFC 1034); use your provider's ALIAS/flattening feature instead.
    #33
  • ✓ 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