Domain report: tmall.com

Registration

info

.com generic · Alibaba Cloud Computing (Beijing) Co., Ltd. · expires 2030-10-16

Found

TLD: .com (generic)
ICANN policies apply: yes
Registrar: Alibaba Cloud Computing (Beijing) Co., Ltd.
Registered: 17 October 1997
Last changed: 19 August 2026
Expires: 16 October 2030
Status: client transfer prohibited, server delete prohibited, server transfer prohibited, server update prohibited
Registry nameservers: ns4.taobao.com, ns5.taobao.com, ns6.taobao.com, ns7.taobao.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 2030-10-16 #3

The registration is valid until 2030-10-16 (1454 days).
✓ Transfer locked #4

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

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

Delegation

info

ns4.taobao.com, ns5.taobao.com, ns6.taobao.com, ns7.taobao.com

Found

Parent zone: com
Delegation from: a.gtld-servers.net (192.5.6.30)
NS at the parent: ns4.taobao.com, ns5.taobao.com, ns6.taobao.com, ns7.taobao.com
NS in the zone: ns4.taobao.com, ns5.taobao.com, ns6.taobao.com, ns7.taobao.com

Nameserver	Addresses	Network (AS)	Glue
ns4.taobao.com	47.88.74.33 47.88.74.35 47.241.207.13 47.241.207.15 2401:b180:4100::4	AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN	2401:b180:4100::4 47.241.207.13 47.241.207.15 47.88.74.33 47.88.74.35
ns5.taobao.com	140.205.122.33 140.205.122.34 2401:b180:4100::5	AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN	140.205.122.33 140.205.122.34 2401:b180:4100::5
ns6.taobao.com	140.205.122.35 140.205.122.36 2401:b180:4100::6	AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN	140.205.122.35 140.205.122.36 2401:b180:4100::6
ns7.taobao.com	106.11.35.25 106.11.41.150 106.11.35.26 106.11.41.149 2401:b180:4100::7	AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN	106.11.35.25 106.11.35.26 106.11.41.149 106.11.41.150 2401:b180:4100::7

Checks

✓ 4 nameservers #6

Delegated to ns4.taobao.com, ns5.taobao.com, ns6.taobao.com, ns7.taobao.com.
✓ 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.
i

One address family in one network

all IPv6 addresses are in 2401:b180:4100::/48, while the other address family is spread over several networks.

#10
✓ 2 autonomous systems #11

The nameservers are spread over: AS37963 (ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN): 7 addresses; AS45102 (ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN): 9 addresses.
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

pass

16 of 16 addresses answer authoritatively

Found

Nameserver	Answer	Recursion	TCP / EDNS	AXFR	Version
ns4.taobao.com 47.88.74.33	NOERROR, 162 ms, authoritative	no	yes / yes	refused	-
ns4.taobao.com 47.88.74.35	NOERROR, 163 ms, authoritative	no	yes / yes	refused	-
ns4.taobao.com 47.241.207.13	NOERROR, 174 ms, authoritative	no	yes / yes	refused	-
ns4.taobao.com 47.241.207.15	NOERROR, 179 ms, authoritative	no	yes / yes	refused	-
ns4.taobao.com 2401:b180:4100::4	NOERROR, 207 ms, authoritative	no	yes / yes	refused	-
ns5.taobao.com 140.205.122.33	NOERROR, 11 ms, authoritative	no	yes / yes	refused	-
ns5.taobao.com 140.205.122.34	NOERROR, 11 ms, authoritative	no	yes / yes	refused	-
ns5.taobao.com 2401:b180:4100::5	NOERROR, 218 ms, authoritative	no	yes / yes	refused	-
ns6.taobao.com 140.205.122.35	NOERROR, 11 ms, authoritative	no	yes / yes	refused	-
ns6.taobao.com 140.205.122.36	NOERROR, 11 ms, authoritative	no	yes / yes	refused	-
ns6.taobao.com 2401:b180:4100::6	NOERROR, 190 ms, authoritative	no	yes / yes	refused	-
ns7.taobao.com 106.11.35.25	NOERROR, 141 ms, authoritative	no	yes / yes	refused	-
ns7.taobao.com 106.11.41.150	NOERROR, 141 ms, authoritative	no	yes / yes	refused	-
ns7.taobao.com 106.11.35.26	NOERROR, 152 ms, authoritative	no	yes / yes	refused	-
ns7.taobao.com 106.11.41.149	NOERROR, 160 ms, authoritative	no	yes / yes	refused	-
ns7.taobao.com 2401:b180:4100::7	NOERROR, 201 ms, authoritative	no	yes / yes	refused	-

Checks

✓ All respond #14

All 16 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.
✓ No version disclosed #17

The nameservers don't reveal their software version.
✓ 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 2018011109 · primary ns4.taobao.com

Found

Primary (MNAME): ns4.taobao.com
Contact (RNAME): hostmaster.alibabadns.com
Serial: 2018011109
Refresh / retry: 3600 s / 1200 s
Expire: 3600 s
Negative TTL: 360 s

Serial per nameserver

Nameserver	Serial
ns4.taobao.com (47.88.74.33)	2018011109
ns4.taobao.com (47.88.74.35)	2018011109
ns4.taobao.com (47.241.207.13)	2018011109
ns4.taobao.com (47.241.207.15)	2018011109
ns4.taobao.com (2401:b180:4100::4)	2018011109
ns5.taobao.com (140.205.122.33)	2018011109
ns5.taobao.com (140.205.122.34)	2018011109
ns5.taobao.com (2401:b180:4100::5)	2018011109
ns6.taobao.com (140.205.122.35)	2018011109
ns6.taobao.com (140.205.122.36)	2018011109
ns6.taobao.com (2401:b180:4100::6)	2018011109
ns7.taobao.com (106.11.35.25)	2018011109
ns7.taobao.com (106.11.41.150)	2018011109
ns7.taobao.com (106.11.35.26)	2018011109
ns7.taobao.com (106.11.41.149)	2018011109
ns7.taobao.com (2401:b180:4100::7)	2018011109

Checks

✓ Serial 2018011109 everywhere #22

All nameservers serve the same version of the zone.
!

Unusual SOA timers

expire 1h is shorter than 7d; secondaries stop answering too soon when the primary is down; expire 1h must be longer than refresh + retry. Current values: refresh 1h, retry 20m, expire 1h, negative TTL 6m.

#23
✓ Primary is a public nameserver #24

The primary nameserver ns4.taobao.com is one of the listed nameservers.
✓ Contact hostmaster@alibabadns.com #25

The SOA RNAME hostmaster.alibabadns.com means hostmaster@alibabadns.com.
✓ Date-based serial #26

The serial 2018011109 follows the YYYYMMDDnn convention (2018-01-11).

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

24 records at the apex

Found

Read from: 47.88.74.33:53

Type	Value	TTL
SOA	ns4.taobao.com. hostmaster.alibabadns.com. 2018011109 3600 1200 3600 360	1200
NS	ns6.taobao.com.	10800
NS	ns5.taobao.com.	10800
NS	ns4.taobao.com.	10800
NS	ns7.taobao.com.	10800
A	59.82.133.135	300
A	59.82.44.54	300
A	59.82.133.133	300
A	59.82.120.115	300
A	59.82.133.159	300
A	59.82.44.30	300
A	59.82.44.45	300
A	59.82.43.82	300
AAAA	2408:4001:f10::5c	300
AAAA	2401:b180:7003::27f	300
AAAA	2401:b180:7003::101	300
AAAA	2401:b180:7003::2d3	300
AAAA	2408:4001:f10::e2	300
AAAA	2408:4001:f00::28f	300
AAAA	2408:4001:f00::1fb	300
AAAA	2401:b180:7003::2bf	300
MX	10 mx1.alibaba-inc.com.	600
TXT	"v=spf1 include:spf1.staff.mail.aliyun.com -all"	600
TXT	"_globalsign-domain-verification=7O4BDPIlnvoShHn7-KYB7kwN5-MEzs9SKYwNr5EU8G"	600

Checks

✓ TTLs within range #32

TTLs: A 5m, AAAA 5m, MX 10m, NS 3h. The NS TTL at the parent is 2d and in the zone 3h; 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