item.taobao.com

Zone taobao.com · Checked 22 October 2026, 09:22 UTC · via 8.8.8.8
!Passed with warnings
24 passed 2 warnings 0 failed 5 info

Registration

info

.com generic · Alibaba Cloud Computing (Beijing) Co., Ltd. · expires 2030-04-21

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Alibaba Cloud Computing (Beijing) Co., Ltd.
Registered
21 April 2003
Last changed
19 August 2026
Expires
21 April 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 2030-04-21 #3
    The registration is valid until 2030-04-21 (1276 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
NameserverAddressesNetwork (AS)Glue
ns4.taobao.com47.241.207.13 47.88.74.35 47.88.74.33 47.241.207.15 2401:b180:4100::4AS45102 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., CN2401:b180:4100::4 47.241.207.13 47.241.207.15 47.88.74.33 47.88.74.35
ns5.taobao.com140.205.122.34 140.205.122.33 2401:b180:4100::5AS45102 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., CN140.205.122.33 140.205.122.34 2401:b180:4100::5
ns6.taobao.com140.205.122.36 140.205.122.35 2401:b180:4100::6AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN AS37963 ALIBABA-CN-NET - Hangzhou Alibaba Advertising Co.,Ltd., CN AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN140.205.122.35 140.205.122.36 2401:b180:4100::6
ns7.taobao.com106.11.35.26 106.11.41.149 106.11.35.25 106.11.41.150 2401:b180:4100::7AS37963 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., CN106.11.35.25 106.11.35.26 106.11.41.149 106.11.41.150 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.
  • ✓ Glue present and correct #8
    Glue is published for the nameservers inside the zone: ns4.taobao.com, ns5.taobao.com, ns6.taobao.com, ns7.taobao.com.
  • ✓ 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): 5 addresses; AS45102 (ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN): 11 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

NameserverAnswerRecursionTCP / EDNSAXFRVersion
ns4.taobao.com 47.241.207.13NOERROR, 174 ms, authoritativenoyes / yesrefused-
ns4.taobao.com 47.88.74.35NOERROR, 159 ms, authoritativenoyes / yesrefused-
ns4.taobao.com 47.88.74.33NOERROR, 158 ms, authoritativenoyes / yesrefused-
ns4.taobao.com 47.241.207.15NOERROR, 173 ms, authoritativenoyes / yesrefused-
ns4.taobao.com 2401:b180:4100::4NOERROR, 200 ms, authoritativenoyes / yesrefused-
ns5.taobao.com 140.205.122.34NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns5.taobao.com 140.205.122.33NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns5.taobao.com 2401:b180:4100::5NOERROR, 206 ms, authoritativenoyes / yesrefused-
ns6.taobao.com 140.205.122.36NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns6.taobao.com 140.205.122.35NOERROR, 4 ms, authoritativenoyes / yesrefused-
ns6.taobao.com 2401:b180:4100::6NOERROR, 203 ms, authoritativenoyes / yesrefused-
ns7.taobao.com 106.11.35.26NOERROR, 154 ms, authoritativenoyes / yesrefused-
ns7.taobao.com 106.11.41.149NOERROR, 149 ms, authoritativenoyes / yesrefused-
ns7.taobao.com 106.11.35.25NOERROR, 151 ms, authoritativenoyes / yesrefused-
ns7.taobao.com 106.11.41.150NOERROR, 141 ms, authoritativenoyes / yesrefused-
ns7.taobao.com 2401:b180:4100::7NOERROR, 195 ms, authoritativenoyes / yesrefused-

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

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

29 records at the apex

Found

Read from
47.241.207.13:53
TypeValueTTL
SOAns4.taobao.com. hostmaster.alibabadns.com. 2018011109 3600 1200 3600 3601200
NSns7.taobao.com.10800
NSns6.taobao.com.10800
NSns5.taobao.com.10800
NSns4.taobao.com.10800
A59.82.122.165300
A59.82.43.238300
A59.82.121.163300
A59.82.43.239300
A59.82.122.130300
A59.82.43.234300
A59.82.44.240300
A59.82.122.140300
AAAA2401:b180:7003::6b300
AAAA2408:4001:f00::87300
AAAA2408:4001:f00::3c300
AAAA2408:4001:f10::5e300
AAAA2401:b180:7003::ed300
AAAA2401:b180:7003::25300
AAAA2408:4001:f10::6f300
AAAA2401:b180:7003::aa300
MX10 mx1.alibaba-inc.com.600
TXT"v=spf1 include:spf1.staff.mail.aliyun.com -all"600
TXT"adobe-idp-site-verification=c0c05a59dfd5a46b7e64e9b01d55193fe87bf5000f96d99c2cc688d6656fff25"600
TXT"figma-domain-verification=14e553bedb87460294457e2477af912e42771c7e064be72aba11c20750c6b96f-1784721613"600
TXT"google-site-verification=NcvM6FnQshEU6o8Gfh9ltaJBbeIK3IvTHFov3cBgbnQ"600
TXT"5hrp21wwcjlvc2s1nhy8mmptb5tcdv7q"600
TXT"_globalsign-domain-verification=CLnrpqmG38z0XA3v0UTgPQQmwoaSOkyLb5oWJlwcfn"600
TXT"verify_03bb39867a788339b1430997a40e273c"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