Domain report: sdo.com

Registration

info

.com generic · Xin Net Technology Corporation · expires 2035-11-08

TLD: .com (generic)
ICANN policies apply: yes
Registrar: Xin Net Technology Corporation
Registered: 8 November 1999
Last changed: 13 October 2026
Expires: 8 November 2035
Status: server delete prohibited, server transfer prohibited
Registry nameservers: ns.uugame.com, ns1.uugame.com, ns2.uugame.com, ns3.uugame.com
RDAP server: https://rdap.verisign.com/com/v1/

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 2035-11-08 #3

The registration is valid until 2035-11-08 (3304 days).
✓ Transfer locked #4

Registry status: server delete prohibited, server transfer prohibited.
✓ Registry and delegation match #5

The nameservers registered at the registry are the ones published in DNS.

warn

ns.uugame.com, ns1.uugame.com, ns2.uugame.com, ns3.uugame.com

Parent zone: com
Delegation from: a.gtld-servers.net (192.5.6.30)
NS at the parent: ns.uugame.com, ns1.uugame.com, ns2.uugame.com, ns3.uugame.com
NS in the zone: ns.uugame.com, ns1.uugame.com, ns2.uugame.com

Nameserver	Addresses	Network (AS)	Glue
ns.uugame.com	162.14.151.121	AS45090 TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited, CN	162.14.151.121
ns1.uugame.com	116.211.25.130	AS4809 CHINATELECOM-CORE-WAN-CN2 - China Telecom Next Generation Carrier Network, CN	116.211.25.130
ns2.uugame.com	116.211.21.137	AS4809 CHINATELECOM-CORE-WAN-CN2 - China Telecom Next Generation Carrier Network, CN	116.211.21.137
ns3.uugame.com (parent only)	114.80.135.28	AS4811 CHINANET-SHANGHAI-MAN - China Telecom (Group), CN	114.80.135.28

✓ 4 nameservers #6

Delegated to ns.uugame.com, ns1.uugame.com, ns2.uugame.com, ns3.uugame.com.
!

NS sets differ

The nameservers at the parent and in the zone should be the same. Only at the parent: ns3.uugame.com. ns.uugame.com, ns1.uugame.com, ns2.uugame.com, ns3.uugame.com report NS ns.uugame.com ns1.uugame.com ns2.uugame.com.

#7
✓ 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 0 IPv6 /48s.
✓ 3 autonomous systems #11

The nameservers are spread over: AS45090 (TENCENT-NET-AP - Shenzhen Tencent Computer Systems Company Limited, CN): 1 address; AS4809 (CHINATELECOM-CORE-WAN-CN2 - China Telecom Next Generation Carrier Network, CN): 2 addresses; AS4811 (CHINANET-SHANGHAI-MAN - China Telecom (Group), 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

warn

4 of 4 addresses answer authoritatively

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns.uugame.com 162.14.151.121	NOERROR, 193 ms, authoritative	no	yes / yes	refused	9.9.3-P2
ns1.uugame.com 116.211.25.130	NOERROR, 193 ms, authoritative	no	yes / yes	refused	9.9.3-P2
ns2.uugame.com 116.211.21.137	NOERROR, 194 ms, authoritative	no	yes / yes	refused	9.9.3-P2
ns3.uugame.com 114.80.135.28	NOERROR, 195 ms, authoritative	no	yes / yes	refused	9.9.3-P2

✓ All respond #14

All 4 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: ns.uugame.com: "9.9.3-P2"; ns1.uugame.com: "9.9.3-P2"; ns2.uugame.com: "9.9.3-P2"; ns3.uugame.com: "9.9.3-P2". 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.

warn

serial 20051118 · primary sdo.com

✓ Serial 20051118 everywhere #22

All nameservers serve the same version of the zone.
!

Unusual SOA timers

refresh 1m12s is outside 20m–1d; expire 1m12s is shorter than 7d; secondaries stop answering too soon when the primary is down; expire 1m12s must be longer than refresh + retry; negative caching TTL (minimum) 36s is outside 5m–1d (RFC 2308 recommends 1–3 hours). Current values: refresh 1m12s, retry 36s, expire 1m12s, negative TTL 36s.

#23
i

Hidden master

The primary nameserver sdo.com is not listed as a nameserver: a hidden master that only feeds the public secondaries. That is a common setup; make sure it is not reachable for zone transfers from outside.

#24
✓ Contact root@ns.sdo.com #25

The SOA RNAME root.ns.sdo.com means root@ns.sdo.com.
✓ Counter serial #26

The serial 20051118 is a plain counter.

warn

Not signed

info

8 records at the apex

Type	Value	TTL
SOA	sdo.com. root.ns.sdo.com. 20051118 72 36 72 36	600
NS	ns1.uugame.com.	600
NS	ns2.uugame.com.	600
NS	ns.uugame.com.	600
A	121.4.16.170	600
MX	10 mx1.sdo.com.	600
MX	10 mx2.sdo.com.	600
TXT	"v=spf1 ip4:109.244.1.8 include:artmail.sdo.com mx a ~all"	600

✓ TTLs within range #32

TTLs: A 10m, MX 10m, NS 10m. The NS TTL at the parent is 2d and in the zone 10m; resolvers may use either.
✓ No CNAME at the apex #33

The zone apex has no CNAME record.
i

Wildcard record

A random name under the zone resolves, so there is a wildcard (*) record. Typos and non-existent hosts resolve too, which can confuse mail and certificate checks.

#34
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