`sendingmaster.com`

DNSSEC	⚠️ Not signed
A	112.175.85.149^{🇰🇷 KT-NET112.168.0.0/13}
NS	`sendingmaster.com` ⭐
		A	112.175.85.149^{🇰🇷 KT-NET112.168.0.0/13}
NS	`ns.infodu.co.kr` ⚠️ Not in zone NS records
		A	218.145.65.143^{🇰🇷 KT-NET218.144.0.0/13 KORnet Powered BY Korea Telecom}
NS	`ns.sendingmaster.com` ⚠️ Not in parent delegation
		A	218.145.65.143^{🇰🇷 KT-NET218.144.0.0/13 KORnet Powered BY Korea Telecom}
NS	`ns1.infodu.co.kr` ⚠️ Not in zone NS records
		A	116.126.143.226^{🇰🇷 SKB-NET116.126.0.0/16 SK Broadband}
NS	`ns1.sendingmaster.com` ⚠️ Not in parent delegation
		A	116.126.143.226^{🇰🇷 SKB-NET116.126.0.0/16 SK Broadband}
NS	`ns2.infodu.co.kr` ⚠️ Not in zone NS records
		A	218.145.65.144^{🇰🇷 KT-NET218.144.0.0/13 KORnet Powered BY Korea Telecom}
NS	`ns2.sendingmaster.com` ⚠️ Not in parent delegation
		A	218.145.65.144^{🇰🇷 KT-NET218.144.0.0/13 KORnet Powered BY Korea Telecom}
NS	`ns3.infodu.co.kr` ⚠️ Not in zone NS records
		A	116.126.143.225^{🇰🇷 SKB-NET116.126.0.0/16 SK Broadband}
NS	`ns3.sendingmaster.com` ⚠️ Not in parent delegation
		A	116.126.143.225^{🇰🇷 SKB-NET116.126.0.0/16 SK Broadband}
MX	`rmw-002.fmcity.com` ⭐
		A	211.34.104.37^{🇰🇷 KT-NET211.34.104.0/24}
TXT	`v=spf1 ip4:112.175.85.149 ~all`
SOA	`sendingmaster.com`postmaster@sendingmaster.com serial=20131126

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1785569262

NS for

sendingmaster.com

Subdomains

ns3.sendingmaster.com

ns1.sendingmaster.com

ns.sendingmaster.com

ns2.sendingmaster.com

Same first word

sendingmaster.com

DNS History

11 records (11 active, 0 former)

●NSns.infodu.co.kr2026-03-31 → 2026-08-01 · 3 obs

○ 2015-06-09 22:31:18
● 2026-03-31 03:26:46
● 2026-08-01 07:37:00

●NSns.sendingmaster.com2015-06-09 → 2026-08-01 · 2 obs

● 2015-06-09 22:31:18
● 2026-08-01 07:37:00

●NSns1.infodu.co.kr2026-03-31 → 2026-08-01 · 3 obs

○ 2015-06-09 22:31:18
● 2026-03-31 03:26:46
● 2026-08-01 07:37:00

●NSns1.sendingmaster.com2015-06-09 → 2026-08-01 · 2 obs

● 2015-06-09 22:31:18
● 2026-08-01 07:37:00

●NSns2.infodu.co.kr2026-03-31 → 2026-08-01 · 3 obs

○ 2015-06-09 22:31:18
● 2026-03-31 03:26:46
● 2026-08-01 07:37:00

●NSns2.sendingmaster.com2015-06-09 → 2026-08-01 · 2 obs

● 2015-06-09 22:31:18
● 2026-08-01 07:37:00

●NSns3.infodu.co.kr2026-03-31 → 2026-08-01 · 3 obs

○ 2015-06-09 22:31:18
● 2026-03-31 03:26:46
● 2026-08-01 07:37:00

●NSns3.sendingmaster.com2015-06-09 → 2026-08-01 · 2 obs

● 2015-06-09 22:31:18
● 2026-08-01 07:37:00

●NSsendingmaster.com2015-06-09 → 2026-08-01 · 2 obs

● 2015-06-09 22:31:18
● 2026-08-01 07:37:00

●MXrmw-002.fmcity.com2015-06-09 → 2026-08-01 · 2 obs

● 2015-06-09 22:31:18
● 2026-08-01 07:37:00

●A112.175.85.1492015-06-09 → 2026-08-01 · 2 obs

● 2015-06-09 22:31:18
● 2026-08-01 07:37:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
sendingmaster.com	ns.infodu.co.kr, ns1.infodu.co.kr, ns2.infodu.co.kr, ns3.infodu.co.kr	-

✅ Authoritative Response

Server:218.145.65.143

NS records: ns.infodu.co.kr, ns1.infodu.co.kr, ns2.infodu.co.kr, ns3.infodu.co.kr

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sendingmaster.com (unsigned zone)

⏱️ Timing

Total: 1960ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`112.175.85.149`
NS	4	`ns.sendingmaster.com, ns3.sendingmaster.com...`
MX	1	`rmw-002.fmcity.com (pri: 10)`
TXT	1	`v=spf1 ip4:112.175.85.149 ~all`
SOA	1	`sendingmaster.com postmaster.sendingmast`

Analysis

Hierarchy

ns3.sendingmaster.com, ns1.sendingmaster.com, ns.sendingmaster.com and ns2.sendingmaster.com each fall under the parent domain sendingmaster.com.

Name Server Role

sendingmaster.com is listed as a name server for sendingmaster.com — it is in-bailiwick, authoritative for its own domain.

It is common to see ns.sendingmaster.com, ns1.sendingmaster.com and ns2.sendingmaster.com acting as name servers in combination with sendingmaster.com.

IP Addresses

sendingmaster.com has exactly one IP address — 112.175.85.149.

yujininfracore.com, kmvno.wellmad.kr, e-bridgekorea.com plus two other host names have IP numbers in common with sendingmaster.com.

Name Servers

sendingmaster.com is authoritative under 9 name servers: sendingmaster.com, ns1.sendingmaster.com, ns2.sendingmaster.com and 6 more.

sendingmaster.com partially shares its NS delegation with several other domains, including yourspace.kr, mth.co.kr, yusungenc.com and two others.

The name servers ns1.infodu.co.kr, ns3.infodu.co.kr, ns.infodu.co.kr and ns2.infodu.co.kr are often found in use alongside these name servers.

Host names resolving to a single IP address:

sendingmaster.com directs to 112.175.85.149.

ns1.sendingmaster.com directs to 116.126.143.226.

ns2.sendingmaster.com directs to 218.145.65.144.

ns3.sendingmaster.com directs to 116.126.143.225.

ns.sendingmaster.com directs to 218.145.65.143.

ns1.infodu.co.kr directs to 116.126.143.226.

ns2.infodu.co.kr directs to 218.145.65.144.

ns3.infodu.co.kr directs to 116.126.143.225.

ns.infodu.co.kr directs to 218.145.65.143.

Host names pointing to 116.126.143.226 IP addresses: ns1.sendingmaster.com and ns1.infodu.co.kr.

Host names pointing to 218.145.65.144 IP addresses: ns2.sendingmaster.com and ns2.infodu.co.kr.

Host names pointing to 116.126.143.225 IP addresses: ns3.sendingmaster.com and ns3.infodu.co.kr.

Host names pointing to 218.145.65.143 IP addresses: ns.sendingmaster.com and ns.infodu.co.kr.

Mail Servers

sendingmaster.com uses one mail server — rmw-002.fmcity.com.

The mail server setup of sendingmaster.com matches that of other domains such as jmco.kr, bandoenm.com, hanjinblast.com and two others.

At least a portion of sendingmaster.com's mail servers are also used by other domains, for example bitjinja.or.kr.

rmw-002.fmcity.com has exactly one IP number: 211.34.104.37.

sendingmaster.com - robtex.com