`programbyexample.com`

DNSSEC	⚠️ Not signed
A	192.30.252.153^{🇺🇸 GITHUB192.30.252.0/24 GitHub Build software better, together. https://github.com \|\| https://github.com/about}
		PTR	`lb-192-30-252-153-iad.github.com`
A	192.30.252.154^{🇺🇸 GITHUB192.30.252.0/24 GitHub Build software better, together. https://github.com \|\| https://github.com/about}
NS	`ns1-04.azure-dns.com` ⭐
		A	2603:1061:0:700::4^{🇺🇸 Microsoft2603:1000::/25 MICROSOFT}
			PTR	`ns1-04.azure-dns.com`
		A	13.107.236.4^{🇺🇸 Microsoft13.104.0.0/14 MICROSOFT}
			PTR	`ns1-04.azure-dns.com`
NS	`ns2-04.azure-dns.net`
		A	2620:1ec:8ec:700::4^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns2-04.azure-dns.net`
		A	150.171.21.4^{🇺🇸 Microsoft150.171.0.0/16 MICROSOFT}
			PTR	`ns2-04.azure-dns.net`
NS	`ns3-04.azure-dns.org`
		A	2a01:111:4000:700::4^{🇬🇧 Microsoft2a01:111:4000::/36}
			PTR	`ns3-04.azure-dns.org`
		A	204.14.183.4^{🇺🇸 Microsoft204.14.180.0/22}
			PTR	`ns3-04.azure-dns.org`
NS	`ns4-04.azure-dns.info`
		A	2620:1ec:bda:700::4^{🇺🇸 Microsoft2620:1ec::/36 MICROSOFT}
			PTR	`ns4-04.azure-dns.info`
		A	208.84.5.4^{🇺🇸 Microsoft208.84.0.0/21 MICROSOFT}
			PTR	`ns4-04.azure-dns.info`
SOA	`ns1-04.azure-dns.com`azuredns-hostmaster@microsoft.com serial=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=1776253652

Same first word

programbyexample.com

DNS History

10 records (6 active, 4 former)

●NSns1-04.azure-dns.com2026-02-28 → 2026-04-15 · 3 obs

○ 2017-06-10 10:29:04
● 2026-02-28 17:14:58
● 2026-04-15 11:50:02

○NSns1.msft.net2015-08-22 → 2017-06-10 · 4 obs

● 2015-08-22 09:06:00
● 2017-06-10 10:29:04
○ 2026-02-28 17:14:58
○ 2026-04-15 11:50:02

●NSns2-04.azure-dns.net2026-02-28 → 2026-04-15 · 3 obs

○ 2017-06-10 10:29:04
● 2026-02-28 17:14:58
● 2026-04-15 11:50:02

○NSns2.msft.net2015-08-22 → 2017-06-10 · 4 obs

● 2015-08-22 09:06:00
● 2017-06-10 10:29:04
○ 2026-02-28 17:14:58
○ 2026-04-15 11:50:02

●NSns3-04.azure-dns.org2026-02-28 → 2026-04-15 · 3 obs

○ 2017-06-10 10:29:04
● 2026-02-28 17:14:58
● 2026-04-15 11:50:02

○NSns3.msft.net2015-08-22 → 2017-06-10 · 4 obs

● 2015-08-22 09:06:00
● 2017-06-10 10:29:04
○ 2026-02-28 17:14:58
○ 2026-04-15 11:50:02

●NSns4-04.azure-dns.info2026-02-28 → 2026-04-15 · 3 obs

○ 2017-06-10 10:29:04
● 2026-02-28 17:14:58
● 2026-04-15 11:50:02

○NSns4.msft.net2015-08-22 → 2017-06-10 · 4 obs

● 2015-08-22 09:06:00
● 2017-06-10 10:29:04
○ 2026-02-28 17:14:58
○ 2026-04-15 11:50:02

●A192.30.252.1532015-12-12 → 2026-04-15 · 2 obs

● 2015-12-12 10:44:34
● 2026-04-15 11:50:02

●A192.30.252.1542015-12-12 → 2026-04-15 · 2 obs

● 2015-12-12 10:44:34
● 2026-04-15 11:50:02

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, d.gtld-servers.net, c.gtld-servers.net, e.gtld-servers.net...	-
programbyexample.com	ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info	2 records

✅ Authoritative Response

Server:208.84.5.4

NS records: ns1-04.azure-dns.com, ns2-04.azure-dns.net, ns3-04.azure-dns.org, ns4-04.azure-dns.info

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for programbyexample.com (unsigned zone)

⏱️ Timing

Total: 407ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`192.30.252.153, 192.30.252.154`
NS	4	`ns1-04.azure-dns.com, ns2-04.azure-dns.net...`
SOA	1	`ns1-04.azure-dns.com azuredns-hostmaster`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1-04.azure-dns.com, ns1-04.azure-dns.com)

Analysis

IP Addresses

programbyexample.com has two IP numbers: 192.30.252.153 and 192.30.252.154.

Other host names, for instance determination.guru, wtfforms.com, docopt.org, lowrank.science and basecode.de share IP numbers with programbyexample.com.

Name Servers

programbyexample.com delegates to four name servers: ns1-04.azure-dns.com, ns4-04.azure-dns.info, ns2-04.azure-dns.net and ns3-04.azure-dns.org.

programbyexample.com at least partially shares name servers with other domains, including smcrescue.com, bluevalue.gr, bearriverconnect.me, asaebusinesssolutions.org and aquilait.com.au.

Host names with two IP numbers: ns1-04.azure-dns.com points to 2603:1061:0:700::4 and 13.107.236.4; ns4-04.azure-dns.info points to 2620:1ec:bda:700::4 and 208.84.5.4; ns2-04.azure-dns.net points to 2620:1ec:8ec:700::4 and 150.171.21.4; ns3-04.azure-dns.org points to 2a01:111:4000:700::4 and 204.14.183.4.

programbyexample.com - robtex.com