`modernmainframeblog.com`

DNSSEC	⚠️ Not signed
A	104.155.139.30^{🇺🇸 Google104.155.128.0/20}
		PTR	`30.139.155.104.bc.googleusercontent.com`
NS	`pdns203.ultradns.com` ⭐
		A	2001:502:f3ff::ef^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns203.ultradns.com`
		A	156.154.64.203^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns203.ultradns.com`
NS	`pdns203.ultradns.biz`
		A	2610:a1:1015::ef^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns203.ultradns.biz`
		A	156.154.66.203^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns203.ultradns.biz`
NS	`pdns203.ultradns.net`
		A	2610:a1:1014::ef^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns203.ultradns.net`
		A	156.154.65.203^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns203.ultradns.net`
NS	`pdns203.ultradns.org`
		A	2001:502:4612::ef^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns203.ultradns.org`
		A	156.154.67.203^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns203.ultradns.org`
TXT	`v=DKIM1; p=`
TXT	`v=spf1 -all`
SOA	`pdns203.ultradns.com`network_services@bmc.com 2019-02-08 #7

`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=1775944477

modernmainframeblog.com

9 records (5 active, 4 former)

○NSauth02.compuware.com2018-06-26 → 2018-06-26 · 3 obs

● 2018-06-26 23:07:00
○ 2026-03-31 15:27:40
○ 2026-04-11 22:16:34

○NSauth04.compuware.com2018-06-26 → 2018-06-26 · 3 obs

● 2018-06-26 23:07:00
○ 2026-03-31 15:27:40
○ 2026-04-11 22:16:34

○NSns00.compuware.com2018-06-26 → 2018-06-26 · 3 obs

● 2018-06-26 23:07:00
○ 2026-03-31 15:27:40
○ 2026-04-11 22:16:34

○NSns01.compuware.com2018-06-26 → 2018-06-26 · 3 obs

● 2018-06-26 23:07:00
○ 2026-03-31 15:27:40
○ 2026-04-11 22:16:34

●NSpdns203.ultradns.biz2026-03-31 → 2026-04-11 · 3 obs

○ 2018-06-26 23:07:00
● 2026-03-31 15:27:40
● 2026-04-11 22:16:34

●NSpdns203.ultradns.com2026-03-31 → 2026-04-11 · 3 obs

○ 2018-06-26 23:07:00
● 2026-03-31 15:27:40
● 2026-04-11 22:16:34

●NSpdns203.ultradns.net2026-03-31 → 2026-04-11 · 3 obs

○ 2018-06-26 23:07:00
● 2026-03-31 15:27:40
● 2026-04-11 22:16:34

●NSpdns203.ultradns.org2026-03-31 → 2026-04-11 · 3 obs

○ 2018-06-26 23:07:00
● 2026-03-31 15:27:40
● 2026-04-11 22:16:34

●A104.155.139.302026-03-31 → 2026-04-11 · 2 obs

● 2026-03-31 15:27:40
● 2026-04-11 22:16:34

Zone	Nameservers	Glue
com	g.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, l.gtld-servers.net...	-
modernmainframeblog.com	pdns203.ultradns.net, pdns203.ultradns.com, pdns203.ultradns.biz, pdns203.ultradns.org	2 records

Server:156.154.65.203

NS records: pdns203.ultradns.net, pdns203.ultradns.com, pdns203.ultradns.biz, pdns203.ultradns.org

⚠️ Insecure (no DNSSEC)

No DS record for modernmainframeblog.com (unsigned zone)

Total: 460ms | Queries: -

Type	Count	Sample Data
A	1	`104.155.139.30`
NS	4	`pdns203.ultradns.biz, pdns203.ultradns.com...`
TXT	2	`v=DKIM1; p=, v=spf1 -all`
SOA	1	`pdns203.ultradns.com network_services.bm`

Total: 2

Out-of-bailiwick: 2 (pdns203.ultradns.com, pdns203.ultradns.com)

modernmainframeblog.com resolves to a single IP: 104.155.139.30.

Other host names, for instance ispw.ca, compuware.be, supervest.com, compuware.com.br and 30.139.155.104.bc.googleusercontent.com share IP numbers with modernmainframeblog.com.

modernmainframeblog.com shares some name servers with other domains, for example stackify.us, bmcremedyforce.org, compuware.mx, bmc.mx and secops.com.