51mcs.com - robtex.com

51mcs.com

DNSSEC⚠️ Not signed
A104.206.25.184🇺🇸 EONIX-NA104.206.24.0/23
PTR51mcs.com
NSns1.dyna-ns.net ⭐
A2400:cb00:2049:1::a29f:1a5c🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street
A2400:cb00:2049:1::a29f:1b9e🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street
A162.159.26.92Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns1.dyna-ns.net
A162.159.27.158Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns1.dyna-ns.net
NSns2.dyna-ns.net
A2400:cb00:2049:1::a29f:1805🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street
A2400:cb00:2049:1::a29f:1905🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street
A162.159.24.5Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns2.dyna-ns.net
A162.159.25.5Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRns2.dyna-ns.net
MXmail.51mcs.com ⭐
A74.48.78.38🇺🇸 MULTA-ASN174.48.64.0/18 placeholder
PTRmail.dozoshanghai.com
SOAns1.dyna-ns.nethostmaster@51mcs.com 2026-01-20 #1

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=1775990462

PTR for

184.25.206.104.in-addr.arpa

Subdomains

mail.51mcs.com

Same first word

51mcs.com
51mcs.cn

Similar names

mcs51.net
mcs51.cn
msc51.com
51scm.com
51cms.cn

DNS History

15 records (4 active, 11 former)

20162017201820192020202120222023202420252026NSns1.dyna-ns.netns2.dyna-ns.netdns13.hichina.comdns14.hichina.comjm1.dns.comjm2.dns.comjuming.dnsdun.comjuming.dnsdun.netMXmail.51mcs.commxn.mxhichina.commxw.mxhichina.comA104.206.25.184107.186.246.157156.234.135.71211.152.6.245
○NSdns13.hichina.com2015-07-15 → 2017-01-05 · 4 obs
● 2015-07-15 18:21:10
● 2017-01-05 14:16:12
○ 2018-07-20 21:47:06
○ 2026-04-12 10:48:38
○NSdns14.hichina.com2015-07-15 → 2017-01-05 · 4 obs
● 2015-07-15 18:21:10
● 2017-01-05 14:16:12
○ 2018-07-20 21:47:06
○ 2026-04-12 10:48:38
○NSjm1.dns.com2020-11-17 → 2020-11-17 · 4 obs
○ 2018-07-20 21:47:06
● 2020-11-17 20:26:12
○ 2026-04-10 18:13:00
○ 2026-04-12 10:48:38
○NSjm2.dns.com2020-11-17 → 2020-11-17 · 4 obs
○ 2018-07-20 21:47:06
● 2020-11-17 20:26:12
○ 2026-04-10 18:13:00
○ 2026-04-12 10:48:38
○NSjuming.dnsdun.com2018-07-20 → 2018-07-20 · 4 obs
○ 2017-01-05 14:16:12
● 2018-07-20 21:47:06
○ 2020-11-17 20:26:12
○ 2026-04-12 10:48:38
○NSjuming.dnsdun.net2018-07-20 → 2018-07-20 · 4 obs
○ 2017-01-05 14:16:12
● 2018-07-20 21:47:06
○ 2020-11-17 20:26:12
○ 2026-04-12 10:48:38
●NSns1.dyna-ns.net2026-04-10 → 2026-04-12 · 3 obs
○ 2020-11-17 20:26:12
● 2026-04-10 18:13:00
● 2026-04-12 10:48:38
●NSns2.dyna-ns.net2026-04-10 → 2026-04-12 · 3 obs
○ 2020-11-17 20:26:12
● 2026-04-10 18:13:00
● 2026-04-12 10:48:38
●MXmail.51mcs.com2026-04-10 → 2026-04-12 · 3 obs
○ 2018-07-20 21:47:06
● 2026-04-10 18:13:00
● 2026-04-12 10:48:38
○MXmxn.mxhichina.com2015-07-15 → 2017-01-05 · 4 obs
● 2015-07-15 18:21:10
● 2017-01-05 14:16:12
○ 2018-07-20 21:47:06
○ 2026-04-12 10:48:38
○MXmxw.mxhichina.com2015-07-15 → 2017-01-05 · 4 obs
● 2015-07-15 18:21:10
● 2017-01-05 14:16:12
○ 2018-07-20 21:47:06
○ 2026-04-12 10:48:38
●A104.206.25.1842026-04-10 → 2026-04-12 · 3 obs
○ 2020-11-17 20:26:12
● 2026-04-10 18:13:00
● 2026-04-12 10:48:38
○A107.186.246.1572018-07-20 → 2018-07-20 · 4 obs
○ 2017-01-05 14:16:12
● 2018-07-20 21:47:06
○ 2020-11-17 20:26:12
○ 2026-04-12 10:48:38
○A156.234.135.712020-11-17 → 2020-11-17 · 4 obs
○ 2018-07-20 21:47:06
● 2020-11-17 20:26:12
○ 2026-04-10 18:13:00
○ 2026-04-12 10:48:38
○A211.152.6.2452015-07-15 → 2017-01-05 · 4 obs
● 2015-07-15 18:21:10
● 2017-01-05 14:16:12
○ 2018-07-20 21:47:06
○ 2026-04-12 10:48:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comc.gtld-servers.net, f.gtld-servers.net, l.gtld-servers.net, k.gtld-servers.net...-
51mcs.comns2.dyna-ns.net, ns1.dyna-ns.net-

✅ Authoritative Response

Server:162.159.25.5

NS records: ns2.dyna-ns.net, ns1.dyna-ns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

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

⏱️ Timing

Total: 400ms | Queries: -

📄 Records

TypeCountSample Data
A1104.206.25.184
NS2ns1.dyna-ns.net, ns2.dyna-ns.net
MX1mail.51mcs.com (pri: 5)
SOA1ns1.dyna-ns.net hostmaster.51mcs.com

Analysis

Hierarchy

51mcs.com is a parent of mail.51mcs.com.

IP Addresses

51mcs.com points to a single IP number: 104.206.25.184.

Name Servers

Delegation for 51mcs.com rests with two name servers, ns1.dyna-ns.net and ns2.dyna-ns.net.

51mcs.com shares the same name server setup as other domains, including letousports.com, sklepinternetowy-pl.shop, shirtrz.cool, qualtics.com and anytimey.com.

Host names with four IP numbers:

ns1.dyna-ns.net points to 2400:cb00:2049:1::a29f:1a5c, 2400:cb00:2049:1::a29f:1b9e, 162.159.26.92 and 162.159.27.158

ns2.dyna-ns.net points to 2400:cb00:2049:1::a29f:1805, 2400:cb00:2049:1::a29f:1905, 162.159.24.5 and 162.159.25.5

Mail Servers

51mcs.com is handled by a single mail server, mail.51mcs.com.

mail.51mcs.com points to a single IP: 74.48.78.38.