`rectangularfoundation.com`

DNSSEC	⚠️ Not signed
NS	`pdns73.ultradns.biz` ⚠️ Not in zone NS records
		A	2610:a1:1015::6d^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns73.ultradns.biz`
		A	156.154.66.73^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns73.ultradns.biz`
NS	`pdns73.ultradns.co.uk` ⚠️ Not in zone NS records
		A	2610:a1:1017::6d^{🇺🇸 MAINT-ID-120082610:a1:1017::/48 Neustar}
			PTR	`pdns73.ultradns.co.uk`
		A	156.154.69.73^{🇺🇸 MAINT-ID-12008156.154.69.0/24 Neustar}
			PTR	`pdns73.ultradns.co.uk`
NS	`pdns73.ultradns.com` ⚠️ Not in zone NS records
		A	2001:502:f3ff::6d^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns73.ultradns.com`
		A	156.154.64.73^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns73.ultradns.com`
NS	`pdns73.ultradns.info` ⚠️ Not in zone NS records
		A	2610:a1:1016::6d^{🇺🇸 MAINT-ID-120082610:a1:1016::/48 Neustar}
			PTR	`pdns73.ultradns.info`
		A	156.154.68.73^{🇺🇸 MAINT-ID-12008156.154.68.0/24 Neustar}
			PTR	`pdns73.ultradns.info`
NS	`pdns73.ultradns.net` ⚠️ Not in zone NS records
		A	2610:a1:1014::6d^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns73.ultradns.net`
		A	156.154.65.73^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns73.ultradns.net`
NS	`pdns73.ultradns.org` ⚠️ Not in zone NS records
		A	2001:502:4612::6d^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns73.ultradns.org`
		A	156.154.67.73^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns73.ultradns.org`

`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=1783768077

Same first word

rectangularfoundation.com

DNS History

6 records (6 active, 0 former)

●NSpdns73.ultradns.biz2026-03-15 → 2026-07-11 · 2 obs

● 2026-03-15 15:42:42
● 2026-07-11 11:27:20

●NSpdns73.ultradns.co.uk2026-03-15 → 2026-07-11 · 2 obs

● 2026-03-15 15:42:42
● 2026-07-11 11:27:20

●NSpdns73.ultradns.com2026-03-15 → 2026-07-11 · 2 obs

● 2026-03-15 15:42:42
● 2026-07-11 11:27:20

●NSpdns73.ultradns.info2026-03-15 → 2026-07-11 · 2 obs

● 2026-03-15 15:42:42
● 2026-07-11 11:27:20

●NSpdns73.ultradns.net2026-03-15 → 2026-07-11 · 2 obs

● 2026-03-15 15:42:42
● 2026-07-11 11:27:20

●NSpdns73.ultradns.org2026-03-15 → 2026-07-11 · 2 obs

● 2026-03-15 15:42:42
● 2026-07-11 11:27:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
rectangularfoundation.com	pdns73.ultradns.net, pdns73.ultradns.com, pdns73.ultradns.org, pdns73.ultradns.biz...	2 records

✅ Authoritative Response

Server:156.154.65.73

NS records: pdns73.ultradns.net, pdns73.ultradns.com, pdns73.ultradns.org, pdns73.ultradns.biz, pdns73.ultradns.info, pdns73.ultradns.co.uk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rectangularfoundation.com (unsigned zone)

⏱️ Timing

Total: 444ms | Queries: -

📄 Records

Type	Count	Sample Data

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (pdns73.ultradns.com, pdns73.ultradns.com)

Analysis

Name Servers

The DNS delegation for rectangularfoundation.com covers 6 name servers: pdns73.ultradns.biz, pdns73.ultradns.com, pdns73.ultradns.info and 3 more.

There is at least partial name server overlap between rectangularfoundation.com and other domains — kcra.mobi, womenshealthonline.cn, 1133jo.com and two more among them.

The name servers pdns73.ultradns.net, pdns73.ultradns.org and pdns73.ultradns.co.uk are often found in combination with these name servers.

Hostnames that resolve to two IP addresses:

pdns73.ultradns.biz maps to two IP addresses — 156.154.66.73 and 2610:a1:1015::6d.

pdns73.ultradns.com maps to two IP addresses — 156.154.64.73 and 2001:502:f3ff::6d.

pdns73.ultradns.info maps to two IP addresses — 156.154.68.73 and 2610:a1:1016::6d.

pdns73.ultradns.net maps to two IP addresses — 156.154.65.73 and 2610:a1:1014::6d.

pdns73.ultradns.org maps to two IP addresses — 156.154.67.73 and 2001:502:4612::6d.

pdns73.ultradns.co.uk maps to two IP addresses — 156.154.69.73 and 2610:a1:1017::6d.

rectangularfoundation.com - robtex.com