`theoryofcomputing.net`

CNAME	`www.theoryofcomputing.org`
DNSSEC	⚠️ Not signed
A	128.135.164.114^{🇺🇸 UCHICAGO-1128.135.0.0/16 The University of Chicago}
		PTR	`zesty.cs.uchicago.edu`

`net`

	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=1774660707

Same first word

theoryofcomputing.org

theoryofcomputing.com

theoryofcomputing.net

DNS History

17 records (5 active, 12 former)

○NSdns1.name-services.com2007-09-22 → 2017-01-08 · 4 obs

● 2007-09-22 04:09:04
● 2017-01-08 20:19:24
○ 2018-01-11 21:09:40
○ 2026-03-28 01:20:06

○NSdns2.name-services.com2007-09-22 → 2017-01-08 · 4 obs

● 2007-09-22 04:09:04
● 2017-01-08 20:19:24
○ 2018-01-11 21:09:40
○ 2026-03-28 01:20:06

○NSdns3.name-services.com2007-09-22 → 2017-01-08 · 4 obs

● 2007-09-22 04:09:04
● 2017-01-08 20:19:24
○ 2018-01-11 21:09:40
○ 2026-03-28 01:20:06

○NSdns4.name-services.com2007-09-22 → 2017-01-08 · 4 obs

● 2007-09-22 04:09:04
● 2017-01-08 20:19:24
○ 2018-01-11 21:09:40
○ 2026-03-28 01:20:06

○NSdns5.name-services.com2007-09-22 → 2017-01-08 · 4 obs

● 2007-09-22 04:09:04
● 2017-01-08 20:19:24
○ 2018-01-11 21:09:40
○ 2026-03-28 01:20:06

●NSns1.active-dns.com2026-03-28 → 2026-03-28 · 2 obs

○ 2018-01-11 21:09:40
● 2026-03-28 01:20:06

●NSns2.active-dns.com2026-03-28 → 2026-03-28 · 2 obs

○ 2018-01-11 21:09:40
● 2026-03-28 01:20:06

●NSns3.active-dns.com2026-03-28 → 2026-03-28 · 2 obs

○ 2018-01-11 21:09:40
● 2026-03-28 01:20:06

●NSns4.active-dns.com2018-01-11 → 2026-03-28 · 3 obs

○ 2017-01-08 20:19:24
● 2018-01-11 21:09:40
● 2026-03-28 01:20:06

○MXeforward2.name-services.com2007-09-22 → 2007-09-22 · 3 obs

● 2007-09-22 04:09:04
○ 2015-06-17 20:16:32
○ 2026-03-28 01:20:06

○MXeforwardct.name-services.com2007-09-22 → 2017-01-08 · 4 obs

● 2007-09-22 04:09:04
● 2017-01-08 20:19:24
○ 2018-01-11 21:09:40
○ 2026-03-28 01:20:06

○MXeforwardct2.name-services.com2015-06-17 → 2017-01-08 · 5 obs

○ 2007-09-22 04:09:04
● 2015-06-17 20:16:32
● 2017-01-08 20:19:24
○ 2018-01-11 21:09:40
○ 2026-03-28 01:20:06

○MXeforwardct3.name-services.com2015-06-17 → 2017-01-08 · 5 obs

○ 2007-09-22 04:09:04
● 2015-06-17 20:16:32
● 2017-01-08 20:19:24
○ 2018-01-11 21:09:40
○ 2026-03-28 01:20:06

○A128.135.11.2082007-09-22 → 2007-09-22 · 3 obs

● 2007-09-22 04:09:04
○ 2015-06-17 20:16:32
○ 2026-03-28 01:20:06

○A128.135.164.382016-01-27 → 2017-01-08 · 5 obs

○ 2015-06-17 20:16:32
● 2016-01-27 10:19:30
● 2017-01-08 20:19:24
○ 2018-01-11 21:09:40
○ 2026-03-28 01:20:06

○CNAMEtoc.cs.uchicago.edu2007-09-22 → 2007-09-22 · 3 obs

● 2007-09-22 04:09:04
○ 2015-06-17 20:16:32
○ 2026-03-28 01:20:06

●CNAMEwww.theoryofcomputing.org2018-01-11 → 2026-03-28 · 3 obs

○ 2015-06-17 20:16:32
● 2018-01-11 21:09:40
● 2026-03-28 01:20:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
net	m.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net...	-
theoryofcomputing.net	ns1.active-dns.com, ns2.active-dns.com, ns3.active-dns.com, ns4.active-dns.com	-

✅ Authoritative Response

Server:162.251.82.125

NS records: ns1.active-dns.com, ns2.active-dns.com, ns3.active-dns.com, ns4.active-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for theoryofcomputing.net (unsigned zone)

⏱️ Timing

Total: 467ms | Queries: -

📄 Records

Type	Count	Sample Data
CNAME	1	`www.theoryofcomputing.org`
SOA	1	`ns4.active-dns.com toc.cs.uchicago.edu`

Analysis

IP Addresses

theoryofcomputing.net points to a single IP address: 128.135.164.114.

Other host names, for example www.theoryofcomputing.org, zesty.cs.uchicago.edu and theoryofcomputing.org share IPs with theoryofcomputing.net.

theoryofcomputing.net - robtex.com