programminghistorian.org - dns.ninja

`programminghistorian.org`

DNSSEC	🔒 Signed (DS record present)
A	2606:50c0:8000::153^{🇺🇸 Fastly2606:50c0:8000::/48 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	2606:50c0:8001::153^{🇺🇸 Fastly2606:50c0:8001::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	2606:50c0:8002::153^{🇺🇸 Fastly2606:50c0:8002::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	2606:50c0:8003::153^{🇺🇸 Fastly2606:50c0:8003::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
A	185.199.108.153^{🇺🇸 Fastly185.199.108.0/24 GitHub - 185.199.108.0/24}
A	185.199.109.153^{🇺🇸 Fastly185.199.109.0/24 GitHub - 185.199.109.0/24}
A	185.199.110.153^{🇺🇸 Fastly185.199.110.0/24 GitHub - 185.199.110.0/24}
A	185.199.111.153^{🇺🇸 Fastly185.199.111.0/24 GitHub - 185.199.111.0/24}
NS	`ns-cloud-e1.googledomains.com` ⭐
		A	2001:4860:4802:32::6e^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-e1.googledomains.com`
		A	216.239.32.110^{🇺🇸 Google216.239.32.0/24}
			PTR	`ns-cloud-e1.googledomains.com`
NS	`ns-cloud-e2.googledomains.com`
		A	2001:4860:4802:34::6e^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-e2.googledomains.com`
		A	216.239.34.110^{🇺🇸 Google216.239.34.0/24}
			PTR	`ns-cloud-e2.googledomains.com`
NS	`ns-cloud-e3.googledomains.com`
		A	2001:4860:4802:36::6e^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-e3.googledomains.com`
		A	216.239.36.110^{🇺🇸 Google216.239.36.0/24}
			PTR	`ns-cloud-e3.googledomains.com`
NS	`ns-cloud-e4.googledomains.com`
		A	2001:4860:4802:38::6e^{🇺🇸 Google2001:4860::/32}
			PTR	`ns-cloud-e4.googledomains.com`
		A	216.239.38.110^{🇺🇸 Google216.239.38.0/24}
			PTR	`ns-cloud-e4.googledomains.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c23::1a^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`yuiadrs-in-f26.1e100.net`
		A	173.194.45.27^{🇺🇸 Google173.194.0.0/16}
			PTR	`yuiadum-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`google-site-verification=m6P3GNrVUMDBZi6cEkRxu94RJYMO2H9hSLO6xWwUtoo`
SOA	`ns-cloud-e1.googledomains.com`cloud-dns-hostmaster@google.com serial=8

`org`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.org.afilias-nst.info` ⭐ ⚠️ Not in parent delegation
	NS	`a2.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`b0.org.afilias-nst.org`
	NS	`b2.org.afilias-nst.org`
	NS	`c0.org.afilias-nst.info` ⚠️ Not in parent delegation
	NS	`d0.org.afilias-nst.org`
	SOA	`a0.org.afilias-nst.info`hostmaster@donuts.email serial=1782504375

rank #134223 globally
rank #11284 in the tld
WOT: UNKNOWN (63/100)
📈 Tranco rank: #504,429

Same first word

programminghistorian.org

DNS History

35 records (17 active, 18 former)

●NSns-cloud-e1.googledomains.com2026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

●NSns-cloud-e2.googledomains.com2026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

●NSns-cloud-e3.googledomains.com2026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

●NSns-cloud-e4.googledomains.com2026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

○NSns1.chnm.org2015-05-30 → 2017-02-07 · 3 obs

● 2015-05-30 20:09:18
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○NSns2.chnm.org2015-05-30 → 2017-02-07 · 3 obs

● 2015-05-30 20:09:18
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○NSns3.chnm.org2015-05-30 → 2017-02-07 · 3 obs

● 2015-05-30 20:09:18
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○NSns4.chnm.org2015-05-30 → 2017-02-07 · 3 obs

● 2015-05-30 20:09:18
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

●MXalt1.aspmx.l.google.com2026-06-26 → 2026-06-26 · 1 obs

● 2026-06-26 20:37:30

●MXalt2.aspmx.l.google.com2026-06-26 → 2026-06-26 · 1 obs

● 2026-06-26 20:37:30

●MXalt3.aspmx.l.google.com2026-06-26 → 2026-06-26 · 1 obs

● 2026-06-26 20:37:30

●MXalt4.aspmx.l.google.com2026-06-26 → 2026-06-26 · 1 obs

● 2026-06-26 20:37:30

●MXaspmx.l.google.com2026-06-26 → 2026-06-26 · 1 obs

● 2026-06-26 20:37:30

○A103.245.222.1332015-05-30 → 2015-05-30 · 3 obs

● 2015-05-30 20:09:18
○ 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○A151.101.100.1332017-02-07 → 2017-02-07 · 3 obs

○ 2016-06-05 21:42:00
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○A151.101.32.1332017-02-07 → 2017-02-07 · 3 obs

○ 2016-06-05 21:42:00
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○A151.101.40.1332017-02-07 → 2017-02-07 · 3 obs

○ 2016-06-05 21:42:00
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○A151.101.52.1332017-02-07 → 2017-02-07 · 3 obs

○ 2016-06-05 21:42:00
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○A151.101.56.1332017-02-07 → 2017-02-07 · 3 obs

○ 2016-06-05 21:42:00
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○A151.101.60.1332017-02-07 → 2017-02-07 · 3 obs

○ 2016-06-05 21:42:00
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

●A185.199.108.1532026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

●A185.199.109.1532026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

●A185.199.110.1532026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

●A185.199.111.1532026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

○A185.31.18.1332015-10-28 → 2015-10-28 · 4 obs

○ 2015-05-30 20:09:18
● 2015-10-28 00:11:52
○ 2016-01-19 21:37:16
○ 2026-06-26 20:37:30

○A185.31.19.1332016-01-19 → 2016-01-19 · 4 obs

○ 2015-10-28 00:11:52
● 2016-01-19 21:37:16
○ 2016-06-05 21:42:00
○ 2026-06-26 20:37:30

○A199.27.76.1332015-05-30 → 2015-05-30 · 3 obs

● 2015-05-30 20:09:18
○ 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○A199.27.79.1332015-05-30 → 2016-06-05 · 4 obs

● 2015-05-30 20:09:18
● 2016-06-05 21:42:00
○ 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○A23.235.43.1332015-05-30 → 2015-05-30 · 3 obs

● 2015-05-30 20:09:18
○ 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

●A2606:50c0:8000::1532026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

●A2606:50c0:8001::1532026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

●A2606:50c0:8002::1532026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

●A2606:50c0:8003::1532026-06-26 → 2026-06-26 · 2 obs

○ 2017-02-07 15:50:44
● 2026-06-26 20:37:30

○CNAMEgithub.map.fastly.net2015-10-28 → 2017-02-07 · 4 obs

○ 2015-05-30 20:09:18
● 2015-10-28 00:11:52
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

○CNAMEprogramminghistorian.github.io2015-05-30 → 2017-02-07 · 3 obs

● 2015-05-30 20:09:18
● 2017-02-07 15:50:44
○ 2026-06-26 20:37:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org	-
programminghistorian.org	ns-cloud-e4.googledomains.com, ns-cloud-e2.googledomains.com, ns-cloud-e1.googledomains.com, ns-cloud-e3.googledomains.com	-

✅ Authoritative Response

Server:216.239.36.110

NS records: ns-cloud-e4.googledomains.com, ns-cloud-e2.googledomains.com, ns-cloud-e1.googledomains.com, ns-cloud-e3.googledomains.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1197ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`185.199.108.153, 185.199.110.153...`
AAAA	4	`2606:50c0:8003::153, 2606:50c0:8000::153...`
NS	4	`ns-cloud-e1.googledomains.com, ns-cloud-e4.googledomains.com...`
MX	5	`alt1.aspmx.l.google.com (pri: 5), alt4.aspmx.l.google.com (pri: 10)...`
TXT	1	`google-site-verification=m6P3GNrVUMDBZi6`
SOA	1	`ns-cloud-e1.googledomains.com cloud-dns-`

Analysis

IP Addresses

programminghistorian.org points to 8 IP addresses, including 185.199.108.153, 185.199.109.153 and 185.199.110.153, plus 5 other.

www.enph2020.github.io, schulerprogram.org, chronotext.com plus two other host names have IP numbers in common with programminghistorian.org.

Name Servers

Four name servers handle the delegation for programminghistorian.org: ns-cloud-e1.googledomains.com, ns-cloud-e2.googledomains.com, ns-cloud-e3.googledomains.com and ns-cloud-e4.googledomains.com.

At least some of programminghistorian.org's name servers are shared with other domains, for example kokei.net, yourdent-usa.com, americanadapters.com and two more.

Four hostnames, each resolving to a pair of IP addresses: ns-cloud-e1.googledomains.com directs to 216.239.32.110 and 2001:4860:4802:32::6e; ns-cloud-e2.googledomains.com directs to 216.239.34.110 and 2001:4860:4802:34::6e; ns-cloud-e3.googledomains.com directs to 216.239.36.110 and 2001:4860:4802:36::6e; ns-cloud-e4.googledomains.com directs to 216.239.38.110 and 2001:4860:4802:38::6e.

Mail Servers

programminghistorian.org has five mail servers, which are aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

At least some of the mail servers used by programminghistorian.org are shared with other domains: walkerjane.com, rodmoffitt.com, ns500758.ns500759.ns500759.ns500735.ns500736.ns500698.ns500735.ns500708.ns500708.ns500686.ns500619.ns500576.trackreceptor.com and two others among them.

These mail servers are often deployed together with alt4.aspmx.l.google.com, alt3.aspmx.l.google.com, aspmx2.googlemail.com and 3 other mail servers.

Host names pointing to two IP addresses:

aspmx.l.google.com resolves to two addresses: 173.194.45.27 and 2607:f8b0:4004:c23::1a.

alt1.aspmx.l.google.com resolves to two addresses: 108.177.123.26 and 2800:3f0:4003:c0f::1a.

alt2.aspmx.l.google.com resolves to two addresses: 172.253.116.26 and 2a00:1450:400b:c02::1b.

alt3.aspmx.l.google.com resolves to two addresses: 192.178.223.26 and 2a00:1450:4009:c0f::1b.

alt4.aspmx.l.google.com resolves to two addresses: 172.253.157.26 and 2a00:1450:400c:c23::1b.