`john-mara.com`

DNSSEC	⚠️ Not signed
A	199.59.136.220^{🇺🇸 AS53676199.59.136.0/23 Broadridge Financial Solutions}
NS	`fk1-z6-ib-internet.northwesternmutual.com` ⭐ ⚠️ Not in parent delegation
		A	216.20.176.228^{🇺🇸 AS26787216.20.176.0/21 first half of 216.20.176.0/20 IP space}
			PTR	`fk1-z6-ib-internet.northwesternmutual.com`
			PTR	`ns1.northwesternmutual.com`
NS	`dc1-ext-ddi-01a.nml.com` ⚠️ Not in parent delegation
		A	216.20.184.10^{🇺🇸 AS26787216.20.184.0/24 first subnet in the 2nd half of 216.20.176.0/20 (216.20.184.0/21) owned IP space}
NS	`mkn-z3-ib-internet.northwesternmutual.com` ⚠️ Not in parent delegation
		A	216.20.179.228^{🇺🇸 AS26787216.20.176.0/21 first half of 216.20.176.0/20 IP space}
			PTR	`mkn-z3-ib-internet.northwesternmutual.com`
			PTR	`ns2.northwesternmutual.com`
NS	`ns1.northwesternmutual.com` ⚠️ Not in zone NS records
		A	216.20.176.228^{🇺🇸 AS26787216.20.176.0/21 first half of 216.20.176.0/20 IP space}
			PTR	`fk1-z6-ib-internet.northwesternmutual.com`
			PTR	`ns1.northwesternmutual.com`
NS	`ns2.northwesternmutual.com` ⚠️ Not in zone NS records
		A	216.20.179.228^{🇺🇸 AS26787216.20.176.0/21 first half of 216.20.176.0/20 IP space}
			PTR	`mkn-z3-ib-internet.northwesternmutual.com`
			PTR	`ns2.northwesternmutual.com`
NS	`ns3.northwesternmutual.com` ⚠️ Not in parent delegation
NS	`ns4.northwesternmutual.com` ⚠️ Not in parent delegation
NS	`ns6.northwesternmutual.com` ⚠️ Not in zone NS records
		A	216.20.184.10^{🇺🇸 AS26787216.20.184.0/24 first subnet in the 2nd half of 216.20.176.0/20 (216.20.184.0/21) owned IP space}
TXT	`v=spf1 -all`
SOA	`fk1-z6-ib-internet.northwesternmutual.com`please_set_email@absolutely.nowhere serial=37

`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=1785874184

Same first word

john-mara.com

DNS History

13 records (9 active, 4 former)

●NSdc1-ext-ddi-01a.nml.com2026-03-27 → 2026-08-04 · 3 obs

○ 2017-08-19 15:42:36
● 2026-03-27 23:19:26
● 2026-08-04 20:21:28

○NSf1-ib-gridmaster.ho.nmfco.com2015-12-29 → 2015-12-29 · 4 obs

○ 2015-07-21 23:19:00
● 2015-12-29 00:47:58
○ 2016-03-26 18:43:06
○ 2026-08-04 20:21:28

○NSf1-ib-inetns.northwesternmutual.com2015-12-29 → 2015-12-29 · 4 obs

○ 2015-07-21 23:19:00
● 2015-12-29 00:47:58
○ 2016-03-26 18:43:06
○ 2026-08-04 20:21:28

●NSfk1-z6-ib-internet.northwesternmutual.com2016-03-26 → 2026-08-04 · 3 obs

○ 2015-12-29 00:47:58
● 2016-03-26 18:43:06
● 2026-08-04 20:21:28

●NSmkn-z3-ib-internet.northwesternmutual.com2016-03-26 → 2026-08-04 · 3 obs

○ 2015-12-29 00:47:58
● 2016-03-26 18:43:06
● 2026-08-04 20:21:28

○NSmn-ib-inetns.northwesternmutual.com2015-12-29 → 2015-12-29 · 4 obs

○ 2015-07-21 23:19:00
● 2015-12-29 00:47:58
○ 2016-03-26 18:43:06
○ 2026-08-04 20:21:28

●NSns1.northwesternmutual.com2015-07-21 → 2026-08-04 · 5 obs

● 2015-07-21 23:19:00
○ 2015-12-29 00:47:58
○ 2017-08-19 15:42:36
● 2026-03-27 23:19:26
● 2026-08-04 20:21:28

●NSns2.northwesternmutual.com2015-07-21 → 2026-08-04 · 5 obs

● 2015-07-21 23:19:00
○ 2015-12-29 00:47:58
○ 2017-08-19 15:42:36
● 2026-03-27 23:19:26
● 2026-08-04 20:21:28

●NSns3.northwesternmutual.com2015-12-29 → 2026-08-04 · 3 obs

○ 2015-07-21 23:19:00
● 2015-12-29 00:47:58
● 2026-08-04 20:21:28

●NSns4.northwesternmutual.com2015-12-29 → 2026-08-04 · 3 obs

○ 2015-07-21 23:19:00
● 2015-12-29 00:47:58
● 2026-08-04 20:21:28

●NSns6.northwesternmutual.com2026-03-27 → 2026-08-04 · 3 obs

○ 2017-08-19 15:42:36
● 2026-03-27 23:19:26
● 2026-08-04 20:21:28

○NSnsfdp.ho.nmfco.com2015-07-21 → 2015-07-21 · 3 obs

● 2015-07-21 23:19:00
○ 2015-12-29 00:47:58
○ 2026-08-04 20:21:28

●A199.59.136.2202015-07-21 → 2026-08-04 · 2 obs

● 2015-07-21 23:19:00
● 2026-08-04 20:21:28

🔍 DNS Trace

Analysis

IP Addresses

john-mara.com points to a single IP number: 199.59.136.220.

Additional host names — rongubiotti.com, michael-j-welch.com, john-voigt.com and two others — share IP numbers with john-mara.com.

Name Servers

john-mara.com is served by 8 authoritative name servers — among them dc1-ext-ddi-01a.nml.com, fk1-z6-ib-internet.northwesternmutual.com, mkn-z3-ib-internet.northwesternmutual.com and 5 others.

john-mara.com partially shares its NS delegation with several other domains, including brian-mcnally.com, nwimco.com, steveblikre.com and two others.

In DNS configurations, these name servers often share authority with ns1.northwesternmutual.com, ns2.northwesternmutual.com, ns6.northwesternmutual.com and 4 other name servers.

Host names pointing to a single IP address:

The hostname dc1-ext-ddi-01a.nml.com resolves to 216.20.184.10.

The hostname fk1-z6-ib-internet.northwesternmutual.com resolves to 216.20.176.228.

The hostname mkn-z3-ib-internet.northwesternmutual.com resolves to 216.20.179.228.

The hostname ns1.northwesternmutual.com resolves to 216.20.176.228.

The hostname ns2.northwesternmutual.com resolves to 216.20.179.228.

The hostname ns6.northwesternmutual.com resolves to 216.20.184.10.

dc1-ext-ddi-01a.nml.com along with ns6.northwesternmutual.com each resolve to 216.20.184.10 IP addresses.

fk1-z6-ib-internet.northwesternmutual.com along with ns1.northwesternmutual.com each resolve to 216.20.176.228 IP addresses.

mkn-z3-ib-internet.northwesternmutual.com along with ns2.northwesternmutual.com each resolve to 216.20.179.228 IP addresses.