zblogcn.com

Checked 22 October 2026, 11:42 UTC · via 8.8.8.8
!Passed with warnings
22 passed 4 warnings 0 failed 5 info

Registration

info

.com generic · DNSPod, Inc. · expires 2027-02-21

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
DNSPod, Inc.
Registered
21 February 2014
Last changed
25 August 2026
Expires
21 February 2027
Status
active
Registry nameservers
arthur.dnspod.net, topic.dnspod.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 2027-02-21 #3
    The registration is valid until 2027-02-21 (121 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

arthur.dnspod.net, topic.dnspod.net

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
arthur.dnspod.net, topic.dnspod.net
NS in the zone
arthur.dnspod.net, topic.dnspod.net
NameserverAddressesNetwork (AS)Glue
arthur.dnspod.net220.196.136.35 1.12.0.4 1.14.119.35 111.13.13.35 117.89.178.35 2402:4e00:1470:2::eAS140979 UNICOM-SHFT-IDC - China Unicom Shanghai FuTe IDC network, CN AS132203 TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue, CN AS45090 TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited, CN AS9808 CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd., CN AS134756 ChinaNet-NANJING-JISHAN-IDC - CHINANET Nanjing Jishan IDC network, CN AS45090 TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited, CN-
topic.dnspod.net1.12.0.1 1.13.76.35 36.155.149.35 111.206.98.235 101.227.168.35 2402:4e00:111:fff::cAS132203 TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue, CN AS45090 TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited, CN AS56046 CMNET-Jiangsu-AP - China Mobile communications corporation, CN AS4808 CHINA169-BJ - China Unicom Beijing Province Network, CN AS4811 CHINANET-SHANGHAI-MAN - China Telecom (Group), CN AS45090 TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited, CN-

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: arthur.dnspod.net, topic.dnspod.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 9 IPv4 /24s and 2 IPv6 /48s.
  • ✓ 8 autonomous systems #11
    The nameservers are spread over: AS132203 (TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue, CN): 2 addresses; AS134756 (ChinaNet-NANJING-JISHAN-IDC - CHINANET Nanjing Jishan IDC network, CN): 1 address; AS140979 (UNICOM-SHFT-IDC - China Unicom Shanghai FuTe IDC network, CN): 1 address; AS45090 (TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited, CN): 4 addresses; AS4808 (CHINA169-BJ - China Unicom Beijing Province Network, CN): 1 address; AS4811 (CHINANET-SHANGHAI-MAN - China Telecom (Group), CN): 1 address; AS56046 (CMNET-Jiangsu-AP - China Mobile communications corporation, CN): 1 address; AS9808 (CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd., CN): 1 address.
  • 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

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
arthur.dnspod.net 220.196.136.35NOERROR, 269 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
arthur.dnspod.net 1.12.0.4NOERROR, 6 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
arthur.dnspod.net 1.14.119.35NOERROR, 244 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
arthur.dnspod.net 111.13.13.35NOERROR, 138 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
arthur.dnspod.net 117.89.178.35NOERROR, 226 ms, authoritativenoyes / yesrefused-
arthur.dnspod.net 2402:4e00:1470:2::eNOERROR, 204 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
topic.dnspod.net 1.12.0.1NOERROR, 5 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
topic.dnspod.net 1.13.76.35NOERROR, 204 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
topic.dnspod.net 36.155.149.35NOERROR, 200 ms, authoritativenoyes / yesrefused-
topic.dnspod.net 111.206.98.235NOERROR, 191 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
topic.dnspod.net 101.227.168.35NOERROR, 175 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
topic.dnspod.net 2402:4e00:111:fff::cNOERROR, 203 ms, authoritativenoyes / yesrefused-

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: arthur.dnspod.net: "DNSPod AUTHORITY DNS 7.3.2512.01"; topic.dnspod.net: "DNSPod AUTHORITY DNS 7.3.2512.01". 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

warn

serial 1792057363 · primary arthur.dnspod.net

Found

Primary (MNAME)
arthur.dnspod.net
Contact (RNAME)
freednsadmin.dnspod.com
Serial
1792057363
Refresh / retry
3600 s / 180 s
Expire
1209600 s
Negative TTL
180 s

Serial per nameserver

NameserverSerial
arthur.dnspod.net (220.196.136.35)1792057363
arthur.dnspod.net (1.12.0.4)1792057363
arthur.dnspod.net (1.14.119.35)1792057363
arthur.dnspod.net (111.13.13.35)1792057363
arthur.dnspod.net (117.89.178.35)1792057363
arthur.dnspod.net (2402:4e00:1470:2::e)1792057363
topic.dnspod.net (1.12.0.1)1792057363
topic.dnspod.net (1.13.76.35)1792057363
topic.dnspod.net (36.155.149.35)1792057363
topic.dnspod.net (111.206.98.235)1792057363
topic.dnspod.net (101.227.168.35)1792057363
topic.dnspod.net (2402:4e00:111:fff::c)1792057363

Checks

  • ✓ Serial 1792057363 everywhere #22
    All nameservers serve the same version of the zone.
  • !
    Unusual SOA timers
    negative caching TTL (minimum) 3m is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1h, retry 3m, expire 14d, negative TTL 3m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver arthur.dnspod.net is one of the listed nameservers.
  • ✓ Contact freednsadmin@dnspod.com #25
    The SOA RNAME freednsadmin.dnspod.com means freednsadmin@dnspod.com.
  • ✓ Timestamp serial #26
    The serial 1792057363 is a Unix timestamp (2026-10-15 09:42 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

warn

9 records at the apex

Found

Read from
220.196.136.35:53
TypeValueTTL
SOAarthur.dnspod.net. freednsadmin.dnspod.com. 1792057363 3600 180 1209600 180180
NSarthur.dnspod.net.86400
NStopic.dnspod.net.86400
A180.163.28.10560
MX5 mxbiz1.qq.com.600
MX10 mxbiz2.qq.com.600
TXT"google-site-verification=3ACLjy2dqIleONlsW81iwC0zPIKddYzN6-XzbgDh1Rc"600
TXT"v=spf1 include:spf.mail.qq.com ~all"600
TXT"4f7c20fa-2560-466f-83dd-aeef98aaa862-1419496149013"600

Checks

  • !
    Very low TTLs
    These records have a TTL below 5m, causing extra queries and slower lookups: A (1m). Low TTLs are useful just before a planned change. The NS TTL at the parent is 2d and in the zone 1d; 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