`combineoptical.com`

DNSSEC	⚠️ Not signed
A	12.170.131.23^{🇺🇸 AS701812.128.0.0/9 12/8 upper half}
NS	`ns47.worldnic.com` ⭐
		A	162.159.26.111^{Cloudflare162.159.26.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`ns48.worldnic.com`
		A	162.159.27.50^{Cloudflare162.159.27.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`combineoptical-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c902::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-sj2pr05cu00401.inbound.protection.outlook.com`
		A	2a01:111:f403:c91d::b^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-mw2pr02cu00603.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-ch5pr02cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:f90a::1^{🇺🇸 Microsoft2a01:111:f000::/36}
			PTR	`mail-bn8pr03cu00201.inbound.protection.outlook.com`
		A	52.101.8.51^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-dm1pr04cu00203.inbound.protection.outlook.com`
		A	52.101.11.2^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sn1pr03cu00102.inbound.protection.outlook.com`
		A	52.101.41.4^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj2pr05cu00204.inbound.protection.outlook.com`
		A	52.101.41.56^{🇺🇸 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-sj0pr21cu00100.inbound.protection.outlook.com`
TXT	`v=spf1 include:spf.protection.outlook.com -all`
SOA	`NS47.WORLDNIC.com`namehost@WORLDNIC.com serial=117100413

`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=1774454997

Subdomains

mail.combineoptical.com

Same first word

combineoptical.com

DNS History

5 records (4 active, 1 former)

●NSns47.worldnic.com2015-04-11 → 2026-03-25 · 2 obs

● 2015-04-11 20:26:34
● 2026-03-25 16:11:58

●NSns48.worldnic.com2015-04-11 → 2026-03-25 · 2 obs

● 2015-04-11 20:26:34
● 2026-03-25 16:11:58

●MXcombineoptical-com.mail.protection.outlook.com2026-02-19 → 2026-03-25 · 3 obs

○ 2017-04-21 02:09:50
● 2026-02-19 15:35:08
● 2026-03-25 16:11:58

○MXmail.combineoptical.com2015-04-11 → 2017-04-21 · 4 obs

● 2015-04-11 20:26:34
● 2017-04-21 02:09:50
○ 2026-02-19 15:35:08
○ 2026-03-25 16:11:58

●A12.170.131.232015-04-11 → 2026-03-25 · 2 obs

● 2015-04-11 20:26:34
● 2026-03-25 16:11:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, c.gtld-servers.net, f.gtld-servers.net, g.gtld-servers.net...	-
combineoptical.com	ns47.worldnic.com, ns48.worldnic.com	2 records

✅ Authoritative Response

Server:162.159.27.50

NS records: ns47.worldnic.com, ns48.worldnic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for combineoptical.com (unsigned zone)

⏱️ Timing

Total: 152ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`12.170.131.23`
NS	2	`ns48.worldnic.com, ns47.worldnic.com`
MX	1	`combineoptical-com.mail.protection.outlo`
TXT	1	`v=spf1 include:spf.protection.outlook.co`
SOA	1	`NS47.WORLDNIC.com namehost.WORLDNIC.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns47.worldnic.com, ns48.worldnic.com)

Analysis

Hierarchy

The parent of mail.combineoptical.com is combineoptical.com.

IP Addresses

combineoptical.com points to IP number: 12.170.131.23.

Name Servers

combineoptical.com is delegated to two name servers: ns47.worldnic.com and ns48.worldnic.com.

combineoptical.com shares the same name server setup as crescentrealty.com, lawarbitration.net, atcpulse.com, egsandlot.com and cidata.net.

Host names with a single IP:

ns47.worldnic.com points to 162.159.26.111.

ns48.worldnic.com points to 162.159.27.50.

Mail Servers

combineoptical.com is handled by a single mail server, combineoptical-com.mail.protection.outlook.com.

Host name combineoptical-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c902::1, 2a01:111:f403:c91d::b, 2a01:111:f403:c946::, 2a01:111:f403:f90a::1, 52.101.8.51, 52.101.11.2, 52.101.41.4 and 52.101.41.56.

combineoptical.com - robtex.com