`theoryofcomputing.com`

DNSSEC	⚠️ Not signed
A	2600:1f18:4ae:c605:dd5d:b838:5816:d7fb^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	2600:1f18:4ae:c606:78d4:4260:db4e:aeee^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	13.223.25.84^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
A	54.243.117.197^{🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix}
NS	`ns1.namebrightdns.com` ⭐
		A	2600:1f18:683a:ae1a:f77:89a0:bb92:5271^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:1bc1:4543:c98c:d215^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:69e5:226a:b7cd:7a5d^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:5baf:bb2e:3a49:1c72^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:bbad:b6d1:9c58:c1c8^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	34.207.74.84^{🇺🇸 Amazon34.192.0.0/12 EC2 IAD prefix}
			PTR	`ec2-34-207-74-84.compute-1.amazonaws.com`
		A	52.91.47.137^{🇺🇸 Amazon52.90.0.0/15 EC2 IAD prefix}
			PTR	`ec2-52-91-47-137.compute-1.amazonaws.com`
		A	54.159.91.195^{🇺🇸 Amazon54.156.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-159-91-195.compute-1.amazonaws.com`
		A	54.242.161.44^{🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-242-161-44.compute-1.amazonaws.com`
		A	98.80.5.173^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
			PTR	`ec2-98-80-5-173.compute-1.amazonaws.com`
NS	`nsg1.namebrightdns.com`
		A	2600:1f18:683a:ae1a:894e:779f:a1ca:3cf5^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:e5a9:8ee2:a408:496a^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:2ea0:149e:cf30:8d28^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:9806:d504:f0e4:26c^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:aa5e:9502:d652:6d53^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:b2d2:f9bf:c31b:7e61^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.89.209.21^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-89-209-21.compute-1.amazonaws.com`
		A	13.220.56.184^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
			PTR	`ec2-13-220-56-184.compute-1.amazonaws.com`
		A	44.220.149.224^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
			PTR	`ec2-44-220-149-224.compute-1.amazonaws.com`
		A	52.91.12.28^{🇺🇸 Amazon52.90.0.0/15 EC2 IAD prefix}
			PTR	`ec2-52-91-12-28.compute-1.amazonaws.com`
		A	54.88.138.42^{🇺🇸 Amazon54.88.0.0/16 EC2 IAD VPC prefix}
			PTR	`ec2-54-88-138-42.compute-1.amazonaws.com`
		A	98.81.135.11^{🇺🇸 Amazon98.80.0.0/13 EC2 IAD Prefix}
			PTR	`ec2-98-81-135-11.compute-1.amazonaws.com`
NS	`nsg2.namebrightdns.com`
		A	2600:1f18:683a:ae1a:6371:849e:3916:7db3^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:c221:8713:a429:b322^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:e842:8110:107c:b494^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:4c22:ef5c:347c:ebc7^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:d886:b5ba:8512:894^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.85.217.230^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-85-217-230.compute-1.amazonaws.com`
		A	13.221.125.168^{🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix}
			PTR	`ec2-13-221-125-168.compute-1.amazonaws.com`
		A	34.235.153.57^{🇺🇸 Amazon34.224.0.0/12 EC2 Region prefix}
			PTR	`ec2-34-235-153-57.compute-1.amazonaws.com`
		A	54.175.160.3^{🇺🇸 Amazon54.174.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-175-160-3.compute-1.amazonaws.com`
		A	54.224.194.88^{🇺🇸 Amazon54.224.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-224-194-88.compute-1.amazonaws.com`
TXT	`v=spf1 -all`
TXT	`afternic-verification-G9G3tM8T8EwEizzPzjGJWF`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-02-25 #1

`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=1774589672

Same first word

theoryofcomputing.org

theoryofcomputing.com

theoryofcomputing.net

DNS History

22 records (7 active, 15 former)

●NSns1.namebrightdns.com2015-07-17 → 2026-03-27 · 7 obs

● 2015-07-17 05:07:50
● 2015-11-18 12:05:16
○ 2016-02-10 22:28:12
● 2016-05-01 09:50:52
○ 2016-12-27 09:37:58
● 2017-12-08 09:07:18
● 2026-03-27 05:43:24

○NSns2.namebrightdns.com2015-07-17 → 2017-12-08 · 8 obs

● 2015-07-17 05:07:50
● 2015-11-18 12:05:16
○ 2016-02-10 22:28:12
● 2016-05-01 09:50:52
○ 2016-12-27 09:37:58
● 2017-12-08 09:07:18
○ 2026-02-25 10:30:46
○ 2026-03-27 05:43:24

●NSnsg1.namebrightdns.com2016-02-10 → 2026-03-27 · 6 obs

○ 2015-11-18 12:05:16
● 2016-02-10 22:28:12
○ 2016-05-01 09:50:52
○ 2017-12-08 09:07:18
● 2026-02-25 10:30:46
● 2026-03-27 05:43:24

●NSnsg2.namebrightdns.com2016-02-10 → 2026-03-27 · 6 obs

○ 2015-11-18 12:05:16
● 2016-02-10 22:28:12
○ 2016-05-01 09:50:52
○ 2017-12-08 09:07:18
● 2026-02-25 10:30:46
● 2026-03-27 05:43:24

○NSnst1.namebrightdns.com2016-12-27 → 2016-12-27 · 4 obs

○ 2016-05-01 09:50:52
● 2016-12-27 09:37:58
○ 2017-12-08 09:07:18
○ 2026-03-27 05:43:24

○NSnst2.namebrightdns.com2016-12-27 → 2016-12-27 · 4 obs

○ 2016-05-01 09:50:52
● 2016-12-27 09:37:58
○ 2017-12-08 09:07:18
○ 2026-03-27 05:43:24

○MXanmail.namebrightmail.com2015-07-17 → 2015-07-17 · 3 obs

● 2015-07-17 05:07:50
○ 2015-11-18 12:05:16
○ 2026-03-27 05:43:24

●A13.223.25.842026-02-25 → 2026-03-27 · 3 obs

○ 2017-12-08 09:07:18
● 2026-02-25 10:30:46
● 2026-03-27 05:43:24

●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-02-25 → 2026-03-27 · 3 obs

○ 2017-12-08 09:07:18
● 2026-02-25 10:30:46
● 2026-03-27 05:43:24

●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-02-25 → 2026-03-27 · 3 obs

○ 2017-12-08 09:07:18
● 2026-02-25 10:30:46
● 2026-03-27 05:43:24

○A52.0.96.242016-02-10 → 2016-02-10 · 4 obs

○ 2015-11-18 12:05:16
● 2016-02-10 22:28:12
○ 2016-05-01 09:50:52
○ 2026-03-27 05:43:24

○A52.200.243.1232016-05-01 → 2016-05-01 · 4 obs

○ 2016-02-10 22:28:12
● 2016-05-01 09:50:52
○ 2016-12-27 09:37:58
○ 2026-03-27 05:43:24

○A52.44.229.1842016-12-27 → 2016-12-27 · 4 obs

○ 2016-05-01 09:50:52
● 2016-12-27 09:37:58
○ 2017-12-08 09:07:18
○ 2026-03-27 05:43:24

○A52.71.117.992016-02-10 → 2016-02-10 · 4 obs

○ 2015-11-18 12:05:16
● 2016-02-10 22:28:12
○ 2016-05-01 09:50:52
○ 2026-03-27 05:43:24

○A54.152.144.2432016-05-01 → 2016-05-01 · 4 obs

○ 2016-02-10 22:28:12
● 2016-05-01 09:50:52
○ 2016-12-27 09:37:58
○ 2026-03-27 05:43:24

○A54.174.31.2542015-07-17 → 2015-11-18 · 4 obs

● 2015-07-17 05:07:50
● 2015-11-18 12:05:16
○ 2016-02-10 22:28:12
○ 2026-03-27 05:43:24

○A54.208.74.2152015-07-17 → 2015-11-18 · 4 obs

● 2015-07-17 05:07:50
● 2015-11-18 12:05:16
○ 2016-02-10 22:28:12
○ 2026-03-27 05:43:24

●A54.243.117.1972026-02-25 → 2026-03-27 · 3 obs

○ 2017-12-08 09:07:18
● 2026-02-25 10:30:46
● 2026-03-27 05:43:24

○A54.84.53.382016-12-27 → 2016-12-27 · 4 obs

○ 2016-05-01 09:50:52
● 2016-12-27 09:37:58
○ 2017-12-08 09:07:18
○ 2026-03-27 05:43:24

○A54.88.107.1402016-12-27 → 2016-12-27 · 4 obs

○ 2016-05-01 09:50:52
● 2016-12-27 09:37:58
○ 2017-12-08 09:07:18
○ 2026-03-27 05:43:24

○CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.com2015-07-17 → 2016-05-01 · 4 obs

● 2015-07-17 05:07:50
● 2016-05-01 09:50:52
○ 2016-12-27 09:37:58
○ 2026-03-27 05:43:24

○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2016-12-27 → 2017-12-08 · 5 obs

○ 2016-05-01 09:50:52
● 2016-12-27 09:37:58
● 2017-12-08 09:07:18
○ 2026-02-25 10:30:46
○ 2026-03-27 05:43:24

🔍 DNS Trace

Analysis

IP Addresses

Four IP numbers are pointed to by theoryofcomputing.com: 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb, 2600:1f18:4ae:c606:78d4:4260:db4e:aeee, 13.223.25.84 and 54.243.117.197.

other host names including build-www.comeearn.com, threesale.com, myaircare.com, www.titeh.com and sofakroken.com share IP numbers with theoryofcomputing.com.

Name Servers

theoryofcomputing.com is delegated to three name servers ns1.namebrightdns.com, nsg1.namebrightdns.com and nsg2.namebrightdns.com.

theoryofcomputing.com at least partially shares name servers with other domains, for instance diningstars.com, madebycaroline.com, tutorello.com, holypie.com and xgo5.com.