51simu.com - dns.ninja

51simu.com

DNSSEC⚠️ Not signed
NSa.share-dns.com ⚠️ Not in zone NS records
A172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSa4.share-dns.com ⚠️ Not in parent delegation
A172.64.53.25🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSb.share-dns.net ⚠️ Not in zone NS records
A172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSb4.share-dns.net ⚠️ Not in parent delegation
A172.64.52.239🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785617237

Same first word

51simu.com

DNS History

24 records (4 active, 20 former)

201020122014201620182020202220242026NSa.share-dns.coma4.share-dns.comb.share-dns.netb4.share-dns.neta.tigerdns.comns.xinnet.cnns.xinnetdns.comns1.tigerdns.comns2.tigerdns.comns3.tigerdns.comns4.tigerdns.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.comaspmx4.googlemail.comaspmx5.googlemail.comhk02mail.itaoyun.commail.51simu.commx-bak.exmail.itaoyun.commxn.mxhichina.commxw.mxhichina.comA58.222.16.248
●NSa.share-dns.com2026-07-10 → 2026-08-01 · 3 obs
○ 2026-02-22 12:09:00
● 2026-07-10 00:38:14
● 2026-08-01 20:56:50
○NSa.tigerdns.com2016-02-07 → 2017-01-30 · 5 obs
○ 2015-11-17 00:20:02
● 2016-02-07 04:47:34
● 2017-01-30 20:38:40
○ 2018-07-21 23:57:50
○ 2026-08-01 20:56:50
●NSa4.share-dns.com2026-07-10 → 2026-08-01 · 3 obs
○ 2026-02-22 12:09:00
● 2026-07-10 00:38:14
● 2026-08-01 20:56:50
●NSb.share-dns.net2026-07-10 → 2026-08-01 · 3 obs
○ 2026-02-22 12:09:00
● 2026-07-10 00:38:14
● 2026-08-01 20:56:50
●NSb4.share-dns.net2026-07-10 → 2026-08-01 · 3 obs
○ 2026-02-22 12:09:00
● 2026-07-10 00:38:14
● 2026-08-01 20:56:50
○NSns.xinnet.cn2009-01-19 → 2009-01-19 · 3 obs
● 2009-01-19 15:56:26
○ 2015-07-19 04:36:00
○ 2026-08-01 20:56:50
○NSns.xinnetdns.com2009-01-19 → 2009-01-19 · 3 obs
● 2009-01-19 15:56:26
○ 2015-07-19 04:36:00
○ 2026-08-01 20:56:50
○NSns1.tigerdns.com2015-07-19 → 2026-02-22 · 9 obs
○ 2009-01-19 15:56:26
● 2015-07-19 04:36:00
● 2015-11-17 00:20:02
○ 2016-02-07 04:47:34
● 2017-01-30 20:38:40
○ 2018-07-21 23:57:50
● 2026-02-22 12:09:00
○ 2026-07-10 00:38:14
○ 2026-08-01 20:56:50
○NSns2.tigerdns.com2015-11-17 → 2026-02-22 · 7 obs
○ 2015-07-19 04:36:00
● 2015-11-17 00:20:02
● 2017-01-30 20:38:40
○ 2018-07-21 23:57:50
● 2026-02-22 12:09:00
○ 2026-07-10 00:38:14
○ 2026-08-01 20:56:50
○NSns3.tigerdns.com2015-11-17 → 2026-02-22 · 7 obs
○ 2015-07-19 04:36:00
● 2015-11-17 00:20:02
● 2017-01-30 20:38:40
○ 2018-07-21 23:57:50
● 2026-02-22 12:09:00
○ 2026-07-10 00:38:14
○ 2026-08-01 20:56:50
○NSns4.tigerdns.com2015-11-17 → 2026-02-22 · 7 obs
○ 2015-07-19 04:36:00
● 2015-11-17 00:20:02
● 2017-01-30 20:38:40
○ 2018-07-21 23:57:50
● 2026-02-22 12:09:00
○ 2026-07-10 00:38:14
○ 2026-08-01 20:56:50
○MXalt1.aspmx.l.google.com2015-07-19 → 2015-11-17 · 5 obs
○ 2009-01-19 15:56:26
● 2015-07-19 04:36:00
● 2015-11-17 00:20:02
○ 2017-01-30 20:38:40
○ 2026-08-01 20:56:50
○MXalt2.aspmx.l.google.com2015-07-19 → 2015-11-17 · 5 obs
○ 2009-01-19 15:56:26
● 2015-07-19 04:36:00
● 2015-11-17 00:20:02
○ 2017-01-30 20:38:40
○ 2026-08-01 20:56:50
○MXaspmx.l.google.com2015-07-19 → 2015-11-17 · 5 obs
○ 2009-01-19 15:56:26
● 2015-07-19 04:36:00
● 2015-11-17 00:20:02
○ 2017-01-30 20:38:40
○ 2026-08-01 20:56:50
○MXaspmx2.googlemail.com2015-07-19 → 2015-11-17 · 5 obs
○ 2009-01-19 15:56:26
● 2015-07-19 04:36:00
● 2015-11-17 00:20:02
○ 2017-01-30 20:38:40
○ 2026-08-01 20:56:50
○MXaspmx3.googlemail.com2015-07-19 → 2015-11-17 · 5 obs
○ 2009-01-19 15:56:26
● 2015-07-19 04:36:00
● 2015-11-17 00:20:02
○ 2017-01-30 20:38:40
○ 2026-08-01 20:56:50
○MXaspmx4.googlemail.com2015-07-19 → 2015-11-17 · 5 obs
○ 2009-01-19 15:56:26
● 2015-07-19 04:36:00
● 2015-11-17 00:20:02
○ 2017-01-30 20:38:40
○ 2026-08-01 20:56:50
○MXaspmx5.googlemail.com2015-07-19 → 2015-11-17 · 5 obs
○ 2009-01-19 15:56:26
● 2015-07-19 04:36:00
● 2015-11-17 00:20:02
○ 2017-01-30 20:38:40
○ 2026-08-01 20:56:50
○MXhk02mail.itaoyun.com2026-02-22 → 2026-02-22 · 4 obs
○ 2018-07-21 23:57:50
● 2026-02-22 12:09:00
○ 2026-07-10 00:38:14
○ 2026-08-01 20:56:50
○MXmail.51simu.com2009-01-19 → 2009-01-19 · 3 obs
● 2009-01-19 15:56:26
○ 2015-07-19 04:36:00
○ 2026-08-01 20:56:50
○MXmx-bak.exmail.itaoyun.com2026-02-22 → 2026-02-22 · 4 obs
○ 2018-07-21 23:57:50
● 2026-02-22 12:09:00
○ 2026-07-10 00:38:14
○ 2026-08-01 20:56:50
○MXmxn.mxhichina.com2017-01-30 → 2017-01-30 · 4 obs
○ 2015-11-17 00:20:02
● 2017-01-30 20:38:40
○ 2018-07-21 23:57:50
○ 2026-08-01 20:56:50
○MXmxw.mxhichina.com2017-01-30 → 2017-01-30 · 4 obs
○ 2015-11-17 00:20:02
● 2017-01-30 20:38:40
○ 2018-07-21 23:57:50
○ 2026-08-01 20:56:50
○A58.222.16.2482009-01-19 → 2009-01-19 · 3 obs
● 2009-01-19 15:56:26
○ 2015-07-19 04:36:00
○ 2026-08-01 20:56:50

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comd.gtld-servers.net, f.gtld-servers.net, k.gtld-servers.net, h.gtld-servers.net...-
51simu.comb4.share-dns.net, a4.share-dns.com1 record

✅ Authoritative Response

Server:172.64.52.239

NS records: b4.share-dns.net, a4.share-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 51simu.com (unsigned zone)

⏱️ Timing

Total: 195ms | Queries: -

📄 Records

TypeCountSample Data
NS2a.share-dns.com, b.share-dns.net

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (a4.share-dns.com)

Analysis

Name Servers

51simu.com has four authoritative name servers: a4.share-dns.com, a.share-dns.com, b4.share-dns.net and b.share-dns.net.

51simu.com has at least partial name server overlap with other domains, such as bscjinan.cn, giblygame.com, hxxfny.com and two others.

a12.share-dns.com, b12.share-dns.net and a5.share-dns.com — plus 7 other name servers — are commonly paired with these name servers.

a4.share-dns.com and a.share-dns.com each resolve to 172.64.53.25, while b4.share-dns.net and b.share-dns.net each resolve to 172.64.52.239.

a4.share-dns.com and a.share-dns.com are host names that each point to 172.64.53.25 IP addresses.

b4.share-dns.net and b.share-dns.net are host names that each point to 172.64.52.239 IP addresses.