yesky.com

Checked 22 October 2026, 11:40 UTC · via 8.8.8.8
!Passed with warnings
21 passed 4 warnings 0 failed 6 info

Registration

info

.com generic · Alibaba Cloud Computing (Beijing) Co., Ltd. · expires 2033-01-12

Found

TLD
.com (generic)
ICANN policies apply
yes
Registrar
Alibaba Cloud Computing (Beijing) Co., Ltd.
Registered
12 January 2000
Last changed
3 March 2025
Expires
12 January 2033
Status
active
Registry nameservers
vip3.alidns.com, vip4.alidns.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 2033-01-12 #3
    The registration is valid until 2033-01-12 (2273 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

warn

vip3.alidns.com, vip4.alidns.com

Found

Parent zone
com
Delegation from
a.gtld-servers.net (192.5.6.30)
NS at the parent
vip3.alidns.com, vip4.alidns.com
NS in the zone
vip3.alidns.com, vip4.alidns.com
NameserverAddressesNetwork (AS)Glue
vip3.alidns.com170.33.80.10 170.33.73.26 8.212.93.3 170.33.32.210 140.205.1.5 2408:4009:500::3AS45102 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 AS45102 ALIBABA-CN-NET - Alibaba (US) Technology Co., Ltd., CN121.40.6.163 140.205.1.5 170.33.32.210 170.33.73.26 170.33.80.10 2408:4009:500::3 39.103.26.212 47.108.36.163 47.116.84.178 8.129.152.245 8.212.93.3
vip4.alidns.com8.212.93.4 170.33.73.27 170.33.32.211 140.205.1.6 170.33.80.11 2408:4009:500::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 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., CN121.40.6.164 140.205.1.6 170.33.32.211 170.33.73.27 170.33.80.11 2408:4009:500::4 39.103.26.213 47.108.36.164 47.116.84.179 8.129.152.246 8.212.93.4

Checks

  • i
    2 nameservers
    Two nameservers meet the minimum; RFC 2182 recommends three or more for important zones: vip3.alidns.com, vip4.alidns.com.
    #6
  • ✓ Parent and zone agree #7
    The parent delegation and the zone's NS records list the same nameservers.
  • !
    Glue differs from the zone
    The addresses at the parent (glue) differ from the addresses in the zone: vip3.alidns.com (glue 121.40.6.163, 140.205.1.5, 170.33.32.210, 170.33.73.26, 170.33.80.10, 2408:4009:500::3, 39.103.26.212, 47.108.36.163, 47.116.84.178, 8.129.152.245, 8.212.93.3, zone 170.33.80.10, 170.33.73.26, 8.212.93.3, 170.33.32.210, 140.205.1.5, 2408:4009:500::3); vip4.alidns.com (glue 121.40.6.164, 140.205.1.6, 170.33.32.211, 170.33.73.27, 170.33.80.11, 2408:4009:500::4, 39.103.26.213, 47.108.36.164, 47.116.84.179, 8.129.152.246, 8.212.93.4, zone 8.212.93.4, 170.33.73.27, 170.33.32.211, 140.205.1.6, 170.33.80.11, 2408:4009:500::4). Update the glue at your registrar.
    #8
  • ✓ 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 2408:4009:500::/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): 1 address; 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

12 of 12 addresses answer authoritatively

Found

NameserverAnswerRecursionTCP / EDNSAXFRVersion
vip3.alidns.com 170.33.80.10NOERROR, 267 ms, authoritativenoyes / yesrefused-
vip3.alidns.com 170.33.73.26NOERROR, 156 ms, authoritativenoyes / yesrefused-
vip3.alidns.com 8.212.93.3NOERROR, 165 ms, authoritativenoyes / yesrefused-
vip3.alidns.com 170.33.32.210NOERROR, 4 ms, authoritativenoyes / yesrefused-
vip3.alidns.com 140.205.1.5NOERROR, 4 ms, authoritativenoyes / yesrefused-
vip3.alidns.com 2408:4009:500::3NOERROR, 4 ms, authoritativenoyes / yesrefused-
vip4.alidns.com 8.212.93.4NOERROR, 239 ms, authoritativenoyes / yesrefused-
vip4.alidns.com 170.33.73.27NOERROR, 156 ms, authoritativenoyes / yesrefused-
vip4.alidns.com 170.33.32.211NOERROR, 3 ms, authoritativenoyes / yesrefused-
vip4.alidns.com 140.205.1.6NOERROR, 4 ms, authoritativenoyes / yesrefused-
vip4.alidns.com 170.33.80.11NOERROR, 261 ms, authoritativenoyes / yesrefused-
vip4.alidns.com 2408:4009:500::4NOERROR, 4 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.
  • ✓ 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 2026081810 · primary vip3.alidns.com

Found

Primary (MNAME)
vip3.alidns.com
Contact (RNAME)
hostmaster.hichina.com
Serial
2026081810
Refresh / retry
3600 s / 1200 s
Expire
86400 s
Negative TTL
600 s

Serial per nameserver

NameserverSerial
vip3.alidns.com (170.33.80.10)2026081810
vip3.alidns.com (170.33.73.26)2014031318
vip3.alidns.com (8.212.93.3)2014031318
vip3.alidns.com (170.33.32.210)2026081712
vip3.alidns.com (140.205.1.5)2014031318
vip3.alidns.com (2408:4009:500::3)2026081810
vip4.alidns.com (8.212.93.4)2026081810
vip4.alidns.com (170.33.73.27)2014031318
vip4.alidns.com (170.33.32.211)2026082516
vip4.alidns.com (140.205.1.6)2026082415
vip4.alidns.com (170.33.80.11)2014031318
vip4.alidns.com (2408:4009:500::4)2014031318

Checks

  • !
    Serials differ
    The nameservers serve different versions of the zone: 2014031318 on vip3.alidns.com (170.33.73.26), vip3.alidns.com (8.212.93.3), vip3.alidns.com (140.205.1.5), vip4.alidns.com (170.33.73.27), vip4.alidns.com (170.33.80.11), vip4.alidns.com (2408:4009:500::4); 2026081712 on vip3.alidns.com (170.33.32.210); 2026081810 on vip3.alidns.com (170.33.80.10), vip3.alidns.com (2408:4009:500::3), vip4.alidns.com (8.212.93.4); 2026082415 on vip4.alidns.com (140.205.1.6); 2026082516 on vip4.alidns.com (170.33.32.211). This is normal for a few minutes after a change; if it lasts, zone transfers to the secondaries are failing.
    #22
  • !
    Unusual SOA timers
    expire 1d is shorter than 7d; secondaries stop answering too soon when the primary is down. Current values: refresh 1h, retry 20m, expire 1d, negative TTL 10m.
    #23
  • ✓ Primary is a public nameserver #24
    The primary nameserver vip3.alidns.com is one of the listed nameservers.
  • ✓ Contact hostmaster@hichina.com #25
    The SOA RNAME hostmaster.hichina.com means hostmaster@hichina.com.
  • ✓ Date-based serial #26
    The serial 2026081810 follows the YYYYMMDDnn convention (2026-08-18).

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

7 records at the apex

Found

Read from
170.33.80.10:53
TypeValueTTL
SOAvip3.alidns.com. hostmaster.hichina.com. 2026081716 3600 1200 86400 600600
NSvip3.alidns.com.86400
NSvip4.alidns.com.86400
A120.48.6.179600
MX5 mxbiz1.qq.com.600
MX10 mxbiz2.qq.com.600
TXT"google-site-verification=-AnICLf8-tMDdwX7I-OhJ5mZsvo0uFRa3YKtuqvMNPg"600

Checks

  • ✓ TTLs within range #32
    TTLs: A 10m, 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