mbalib.com

Checked 22 October 2026, 09:43 UTC · via 8.8.8.8
✗Problems found
22 passed 4 warnings 1 failed 4 info

Registration

info

.com generic · Xiamen 35.com Information Co., Ltd. · expires 2028-09-18

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Xiamen 35.com Information Co., Ltd.
Registered
18 September 2006
Last changed
9 October 2024
Expires
18 September 2028
Status
client transfer prohibited
Registry nameservers
ns1.dnsv4.com, ns2.dnsv4.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 2028-09-18 #3
    The registration is valid until 2028-09-18 (696 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

warn

ns1.dnsv4.com, ns2.dnsv4.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
ns1.dnsv4.com, ns2.dnsv4.com
NS in the zone
ns1.dnsv4.com, ns2.dnsv4.com
NameserverAddressesNetwork (AS)Glue
ns1.dnsv4.com43.134.249.54 1.12.0.24 1.13.76.53 1.12.0.25 117.89.178.53 36.155.149.53 125.94.59.153AS132203 TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue, CN AS132203 TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue, CN AS45090 TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited, CN AS132203 TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue, CN AS134756 ChinaNet-NANJING-JISHAN-IDC - CHINANET Nanjing Jishan IDC network, CN AS56046 CMNET-Jiangsu-AP - China Mobile communications corporation, CN AS4134 CHINANET-BACKBONE - No.31,Jin-rong Street, CN1.12.0.24 1.12.0.25 1.13.76.53 117.89.178.53 125.94.59.153 36.155.149.53 43.134.249.54
ns2.dnsv4.com220.196.136.53 117.135.128.153 1.12.0.23 111.13.203.53 43.130.172.54 1.12.0.26 163.177.5.53 101.227.168.53AS17621 CNCGROUP-SH - China Unicom Shanghai network, CN AS24400 CMNET-V4shanghai-AS-AP - Shanghai Mobile Communications Co.,Ltd., CN AS132203 TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue, CN AS9808 CHINAMOBILE-CN - China Mobile Communications Group Co., Ltd., CN AS132203 TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue, CN AS132203 TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue, CN AS136958 UNICOM-GuangZhou-IDC - China Unicom Guangdong IP network, CN AS4811 CHINANET-SHANGHAI-MAN - China Telecom (Group), CN1.12.0.23 1.12.0.26 101.227.168.53 111.13.203.53 117.135.128.153 163.177.5.53 220.196.136.53 43.130.172.54

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: ns1.dnsv4.com, ns2.dnsv4.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 12 IPv4 /24s and 0 IPv6 /48s.
  • ✓ 10 autonomous systems #11
    The nameservers are spread over: AS132203 (TENCENT-NET-AP-CN - Tencent Building, Kejizhongyi Avenue, CN): 6 addresses; AS134756 (ChinaNet-NANJING-JISHAN-IDC - CHINANET Nanjing Jishan IDC network, CN): 1 address; AS136958 (UNICOM-GuangZhou-IDC - China Unicom Guangdong IP network, CN): 1 address; AS17621 (CNCGROUP-SH - China Unicom Shanghai network, CN): 1 address; AS24400 (CMNET-V4shanghai-AS-AP - Shanghai Mobile Communications Co.,Ltd., CN): 1 address; AS4134 (CHINANET-BACKBONE - No.31,Jin-rong Street, CN): 1 address; AS45090 (TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited, 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 .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
  • !
    No IPv6
    None of the nameservers has an IPv6 address, so IPv6-only resolvers can't reach them.
    #13

Nameservers

fail

14 of 15 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns1.dnsv4.com 43.134.249.54NOERROR, 165 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns1.dnsv4.com 1.12.0.24NOERROR, 4 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns1.dnsv4.com 1.13.76.53NOERROR, 204 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns1.dnsv4.com 1.12.0.25NOERROR, 3 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns1.dnsv4.com 117.89.178.53NOERROR, 164 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns1.dnsv4.com 36.155.149.53NOERROR, 246 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns1.dnsv4.com 125.94.59.153no responsenono / no--
ns2.dnsv4.com 220.196.136.53NOERROR, 205 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns2.dnsv4.com 117.135.128.153NOERROR, 230 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns2.dnsv4.com 1.12.0.23NOERROR, 4 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns2.dnsv4.com 111.13.203.53NOERROR, 134 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns2.dnsv4.com 43.130.172.54NOERROR, 101 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns2.dnsv4.com 1.12.0.26NOERROR, 4 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns2.dnsv4.com 163.177.5.53NOERROR, 203 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01
ns2.dnsv4.com 101.227.168.53NOERROR, 195 ms, authoritativenoyes / yesrefusedDNSPod AUTHORITY DNS 7.3.2512.01

Checks

  • ✗
    Nameservers not responding
    These addresses did not answer, so resolvers waste time on timeouts: ns1.dnsv4.com (125.94.59.153): read udp 46.225.38.91:34028->125.94.59.153:53: i/o timeout.
    #14
  • ✓ 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.dnsv4.com: "DNSPod AUTHORITY DNS 7.3.2512.01"; ns2.dnsv4.com: "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 1788548800 · primary ns1.dnsv4.com

Found

Primary (MNAME)
ns1.dnsv4.com
Contact (RNAME)
enterprise2dnsadmin.dnspod.com
Serial
1788548800
Refresh / retry
3600 s / 180 s
Expire
1209600 s
Negative TTL
180 s

Serial per nameserver

NameserverSerial
ns1.dnsv4.com (43.134.249.54)1788548800
ns1.dnsv4.com (1.12.0.24)1788548800
ns1.dnsv4.com (1.13.76.53)1788548800
ns1.dnsv4.com (1.12.0.25)1788548800
ns1.dnsv4.com (117.89.178.53)1788548800
ns1.dnsv4.com (36.155.149.53)1788548800
ns2.dnsv4.com (220.196.136.53)1788548800
ns2.dnsv4.com (117.135.128.153)1788548800
ns2.dnsv4.com (1.12.0.23)1788548800
ns2.dnsv4.com (111.13.203.53)1788548800
ns2.dnsv4.com (43.130.172.54)1788548800
ns2.dnsv4.com (1.12.0.26)1788548800
ns2.dnsv4.com (163.177.5.53)1788548800
ns2.dnsv4.com (101.227.168.53)1788548800

Checks

  • ✓ Serial 1788548800 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 ns1.dnsv4.com is one of the listed nameservers.
  • ✓ Contact enterprise2dnsadmin@dnspod.com #25
    The SOA RNAME enterprise2dnsadmin.dnspod.com means enterprise2dnsadmin@dnspod.com.
  • ✓ Timestamp serial #26
    The serial 1788548800 is a Unix timestamp (2026-09-04 19:06 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

8 records at the apex

Found

Read from
43.134.249.54:53
TypeValueTTL
SOAns1.dnsv4.com. enterprise2dnsadmin.dnspod.com. 1788548800 3600 180 1209600 180180
NSns2.dnsv4.com.86400
NSns1.dnsv4.com.86400
A43.243.130.123600
AAAA240e:964:1402:4::14023600
MX5 mxbiz1.qq.com.600
MX10 mxbiz2.qq.com.600
TXT"v=spf1 ip4:43.243.130.11 ip4:43.243.130.21 ip4:43.243.130.16 ip4:47.90.11.181 include:spf.mail.qq.com ~all"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 1h, AAAA 1h, 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