`dco.com`

DNSSEC	⚠️ Not signed
A	121.156.99.131^{🇰🇷 KT-NET121.152.0.0/13}
NS	`ns-900.awsdns-48.net` ⭐ ⚠️ Not in zone NS records
		A	2600:9000:5303:8400::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-900.awsdns-48.net`
		A	205.251.195.132^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-900.awsdns-48.net`
NS	`ns-1318.awsdns-36.org` ⚠️ Not in zone NS records
		A	2600:9000:5305:2600::1^{🇺🇸 Amazon2600:9000:5305::/48 - CloudFront}
			PTR	`ns-1318.awsdns-36.org`
		A	205.251.197.38^{🇺🇸 Amazon205.251.197.0/24 prefix}
			PTR	`ns-1318.awsdns-36.org`
NS	`ns-1733.awsdns-24.co.uk` ⚠️ Not in zone NS records
		A	2600:9000:5306:c500::1^{🇺🇸 Amazon2600:9000:5306::/48 - CloudFront}
			PTR	`ns-1733.awsdns-24.co.uk`
		A	205.251.198.197^{🇺🇸 Amazon205.251.198.0/24 prefix}
			PTR	`ns-1733.awsdns-24.co.uk`
NS	`ns-70.awsdns-08.com` ⚠️ Not in zone NS records
		A	2600:9000:5300:4600::1^{🇺🇸 Amazon2600:9000:5300::/48 - CloudFront}
			PTR	`ns-70.awsdns-08.com`
		A	205.251.192.70^{🇺🇸 Amazon205.251.192.0/24 prefix}
			PTR	`ns-70.awsdns-08.com`
NS	`ns.gabia.co.kr`
		A	43.201.170.100^{🇰🇷 Amazon43.200.0.0/14 EC2 ICN Prefix}
			PTR	`ec2-43-201-170-100.ap-northeast-2.compute.amazonaws.com`
NS	`ns.gabia.net`
		A	121.78.117.39^{🇰🇷 GABIA-AS-KR121.78.117.0/24 Transit customer route announce}
			PTR	`ns1.gabia.co.kr`
		A	211.234.124.90^{🇰🇷 DACOM-NET211.234.0.0/17 contact jblee@aunet.nm.kr if necessary contact ojupark@aunet.nm.kr if necessary}
NS	`ns1.gabia.co.kr`
		A	20.200.205.248^{🇰🇷 Microsoft20.192.0.0/10}
MX	`dco-com.mail.protection.outlook.com` ⭐
		A	52.101.153.0^{🇰🇷 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-slxp216cu00200.inbound.protection.outlook.com`
		A	52.101.153.1^{🇰🇷 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sevp216cu00101.inbound.protection.outlook.com`
		A	52.101.153.2^{🇰🇷 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-se2p216cu00602.inbound.protection.outlook.com`
		A	52.101.155.0^{🇰🇷 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-puwp216cu00200.inbound.protection.outlook.com`
TXT	`v=spf1 ip4:121.156.99.165 include:spf.protection.outlook.com ~all`
TXT	`MS=F440221106266C6D4A8E5E82DFB138A1553DE20A`
TXT	`google-site-verification=X0QYwfB4qx5qe6uCMR0ucEEskU4Cmi6vsL7oaaGBVtg`
TXT	`asv=8c1f394ec68dd4cc199719bcf5769083`
TXT	`MS=ms69881389`
TXT	`_9deg4uma40s6ze95h51fw73u4hzwh2w`
SOA	`ns-900.awsdns-48.net`awsdns-hostmaster@amazon.com serial=1

`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=1786375699

Subdomains

mail1.dco.com

com.dco.com

mail2.dco.com

mail.dco.com

Same first word

dco.be

dco.consulting

dco.net.nz

dco.dk

dco.info

dco.uk

dco.mx

dco.org

dco.ca

dco.jp

dco.com.pl

dco.eu

dco.es

dco.at

dco.ch

dco.ru

dco.cz

dco.cn

dco.su

dco.pt

dco.in

dco.events

dco.co

dco.de

dco.fr

dco.gr

dco.com.my

dco.ink

dco.vn

dco.cc

dco.org.br

dco.no

dco.com

dco.nl

dco.lu

dco.com.mx

dco.pl

dco.co.th

dco.sg

dco.me

dco.se

dco.do

dco.ro

dco.it

dco.com.tw

dco.us

dco.solutions

dco.support

dco.com.ar

dco.pe

dco.com.tr

dco.re

Similar names

doc.ie

cdo.cz

cod.be

doc.net

ocd.dz

cod.pro

ocd.org.mx

odc.com.ua

doc.green

odc.church

ocd.cl

ocd.net.au

ocd.tv

cod.cl

cdo.kiev.ua

cod.com.pl

doc.guru

cod.ag

doc.ind.in

doc.in.ua

doc.pet

odc.co.zm

cod.al

cod.co

cod.ee

doc.co.nz

doc.ba

ocd.co.za

doc.com.ai

odc.net

doc.to

cdo.su

odc.center

doc.farm

ocd.pl

doc.se

cdo.xyz

ocd.at

odc.casino

doc.plus

odc.io

cod.asia

doc.money

ocd.fi

ocd.center

doc.org.ua

cod.gg

cod.ru

odc.lu

cdo.at

cdo.com

doc.amsterdam

ocd.ie

ocd.com.tr

doc.pm

doc.xyz

cod.gold

doc.nl

ocd.community

doc.gov.gy

cod.com.ua

ocd.me

cod.partners

ocd.ae

cod.info

odc.org.tn

odc.dance

odc.jp

cod.co.th

doc.dev

cod.no

doc.new

cod.es

doc.sh

doc.network

cod.nl

odc.pl

cdo.com.ua

odc.de

cod.com

odc.vu

doc.im

ocd.codes

doc.ai

doc.lk

odc.mobi

odc.gov.co

cod.fish

ocd.org.nz

ocd.nyc

doc.fr

odc.torino.it

odc.vicenza.it

cod.network

odc.pv.it

doc.mil.ru

doc.md

doc.(0x787878)

cod.email

DNS History

15 records (9 active, 6 former)

●NSns-1318.awsdns-36.org2026-02-15 → 2026-08-10 · 3 obs

○ 2021-10-30 19:27:30
● 2026-02-15 15:06:26
● 2026-08-10 15:31:34

●NSns-1733.awsdns-24.co.uk2026-02-15 → 2026-08-10 · 3 obs

○ 2021-10-30 19:27:30
● 2026-02-15 15:06:26
● 2026-08-10 15:31:34

●NSns-70.awsdns-08.com2026-02-15 → 2026-08-10 · 3 obs

○ 2021-10-30 19:27:30
● 2026-02-15 15:06:26
● 2026-08-10 15:31:34

●NSns-900.awsdns-48.net2026-02-15 → 2026-08-10 · 3 obs

○ 2021-10-30 19:27:30
● 2026-02-15 15:06:26
● 2026-08-10 15:31:34

●NSns.gabia.co.kr2015-08-23 → 2026-08-10 · 2 obs

● 2015-08-23 02:45:40
● 2026-08-10 15:31:34

○NSns.gabia.co.kr.dco.com2015-08-23 → 2017-01-29 · 4 obs

● 2015-08-23 02:45:40
● 2017-01-29 10:56:30
○ 2021-10-30 19:27:30
○ 2026-08-10 15:31:34

●NSns.gabia.net2015-08-23 → 2026-08-10 · 2 obs

● 2015-08-23 02:45:40
● 2026-08-10 15:31:34

●NSns1.gabia.co.kr2015-08-23 → 2026-08-10 · 2 obs

● 2015-08-23 02:45:40
● 2026-08-10 15:31:34

●MXdco-com.mail.protection.outlook.com2026-02-15 → 2026-08-10 · 5 obs

○ 2021-10-30 19:27:30
● 2026-02-15 15:06:26
○ 2026-07-21 15:56:06
● 2026-08-04 05:29:56
● 2026-08-10 15:31:34

○MXmail1.dco.com2015-08-23 → 2021-10-30 · 4 obs

● 2015-08-23 02:45:40
● 2021-10-30 19:27:30
○ 2026-02-15 15:06:26
○ 2026-08-10 15:31:34

○MXmail2.dco.com2015-08-23 → 2021-10-30 · 4 obs

● 2015-08-23 02:45:40
● 2021-10-30 19:27:30
○ 2026-02-15 15:06:26
○ 2026-08-10 15:31:34

○A121.133.165.652017-01-20 → 2017-01-29 · 5 obs

○ 2016-05-10 11:27:48
● 2017-01-20 10:42:28
● 2017-01-29 10:56:30
○ 2021-10-30 19:27:30
○ 2026-08-10 15:31:34

●A121.156.99.1312021-10-30 → 2026-08-10 · 5 obs

○ 2017-01-29 10:56:30
● 2021-10-30 19:27:30
○ 2026-07-21 15:56:06
● 2026-08-04 05:29:56
● 2026-08-10 15:31:34

○A198.185.159.1442015-08-23 → 2015-12-20 · 4 obs

● 2015-08-23 02:45:40
● 2015-12-20 08:09:30
○ 2016-03-18 14:35:36
○ 2026-08-10 15:31:34

○A211.189.165.1062016-03-18 → 2016-05-10 · 5 obs

○ 2015-12-20 08:09:30
● 2016-03-18 14:35:36
● 2016-05-10 11:27:48
○ 2017-01-20 10:42:28
○ 2026-08-10 15:31:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
dco.com	ns.gabia.co.kr, ns1.gabia.co.kr, ns.gabia.net, ns-70.awsdns-08.com...	2 records

✅ Authoritative Response

Server:205.251.197.38

NS records: ns.gabia.co.kr, ns1.gabia.co.kr, ns.gabia.net, ns-70.awsdns-08.com, ns-900.awsdns-48.net, ns-1733.awsdns-24.co.uk, ns-1318.awsdns-36.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for dco.com (unsigned zone)

⏱️ Timing

Total: 1777ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`121.156.99.131`
NS	4	`ns-1318.awsdns-36.org, ns-1733.awsdns-24.co.uk...`
MX	1	`dco-com.mail.protection.outlook.com (pri`
TXT	6	`v=spf1 ip4:121.156.99.165 include:spf.pr, MS=F440221106266C6D4A8E5E82DFB138A1553DE...`
SOA	1	`ns-900.awsdns-48.net awsdns-hostmaster.a`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-70.awsdns-08.com, ns-70.awsdns-08.com)

Analysis

Hierarchy

The domain dco.com is a parent of mail1.dco.com, com.dco.com, mail2.dco.com and mail.dco.com.

IP Addresses

dco.com resolves to one IP address: 121.156.99.131.

Other host names, among them fint.co.kr and www.fint.co.kr, have IP numbers in common with dco.com.

Name Servers

dco.com is served by 7 authoritative name servers — among them ns-70.awsdns-08.com, ns-900.awsdns-48.net, ns.gabia.net and 4 others.

At least some of dco.com's name servers are shared with other domains, for example pashop.kr, d49e6c76d0c1c40eaa4fdbe332ede6cdc4927c0ebed08a310e42b0e24f84fff.link, keedarin.com and two more.

It is common to find these name servers alongside the name servers ns1.gabia.co.kr, ns.gabia.co.kr, ns-1318.awsdns-36.org and two others.

Hostnames that resolve to two IP addresses:

ns-70.awsdns-08.com resolves to two addresses: 205.251.192.70 and 2600:9000:5300:4600::1.

ns-900.awsdns-48.net resolves to two addresses: 205.251.195.132 and 2600:9000:5303:8400::1.

ns.gabia.net resolves to two addresses: 121.78.117.39 and 211.234.124.90.

ns-1318.awsdns-36.org resolves to two addresses: 205.251.197.38 and 2600:9000:5305:2600::1.

ns-1733.awsdns-24.co.uk resolves to two addresses: 205.251.198.197 and 2600:9000:5306:c500::1.

Hosts with just one IP address:

The hostname ns1.gabia.co.kr resolves to 20.200.205.248.

The hostname ns.gabia.co.kr resolves to 43.201.170.100.

Mail Servers

Mail for dco.com is handled by a single mail server, dco-com.mail.protection.outlook.com.

dco-com.mail.protection.outlook.com has four IP addresses: 52.101.153.0, 52.101.153.1, 52.101.153.2 and 52.101.155.0.

dco.com - robtex.com

dco.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`dco.com`

`com`