`programming-exercises.com`

DNSSEC	⚠️ Not signed
A	172.80.89.141^{🇺🇸 ESITED-1172.80.0.0/17 ARIN direct allocation}
NS	`a.share-dns.com` ⭐
		A	172.64.53.25^{🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ip-172-64-53-25.defastlink.net`
NS	`b.share-dns.net`
		A	172.64.52.239^{🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ip-172-64-52-239.defastlink.net`
SOA	`a.share-dns.com`master@share-dns.com serial=1748243693

`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=1771291435

Same first word

programming-exercises.com

DNS History

9 records (3 active, 6 former)

●NSa.share-dns.com2026-03-23 → 2026-03-24 · 3 obs

○ 2017-08-10 06:51:04
● 2026-03-23 11:21:48
● 2026-03-24 02:10:00

●NSb.share-dns.net2026-03-23 → 2026-03-24 · 3 obs

○ 2017-08-10 06:51:04
● 2026-03-23 11:21:48
● 2026-03-24 02:10:00

○NSns1.namesystem.se2017-08-10 → 2017-08-10 · 3 obs

● 2017-08-10 06:51:04
○ 2026-03-23 11:21:48
○ 2026-03-24 02:10:00

○NSns2.namesystem.se2017-08-10 → 2017-08-10 · 3 obs

● 2017-08-10 06:51:04
○ 2026-03-23 11:21:48
○ 2026-03-24 02:10:00

○NSns3.namesystem.se2017-08-10 → 2017-08-10 · 3 obs

● 2017-08-10 06:51:04
○ 2026-03-23 11:21:48
○ 2026-03-24 02:10:00

○MXmx01.glesys.se2017-08-10 → 2017-08-10 · 3 obs

● 2017-08-10 06:51:04
○ 2026-03-23 11:21:48
○ 2026-03-24 02:10:00

○MXmx02.glesys.se2017-08-10 → 2017-08-10 · 3 obs

● 2017-08-10 06:51:04
○ 2026-03-23 11:21:48
○ 2026-03-24 02:10:00

●A172.80.89.1412026-03-23 → 2026-03-24 · 3 obs

○ 2017-08-10 06:51:04
● 2026-03-23 11:21:48
● 2026-03-24 02:10:00

○A31.192.225.1572017-08-10 → 2017-08-10 · 3 obs

● 2017-08-10 06:51:04
○ 2026-03-23 11:21:48
○ 2026-03-24 02:10:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
programming-exercises.com	a.share-dns.com, b.share-dns.net	1 record

✅ Authoritative Response

Server:172.64.53.25

NS records: a.share-dns.com, b.share-dns.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for programming-exercises.com (unsigned zone)

⏱️ Timing

Total: 1849ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`172.80.89.141`
NS	2	`a.share-dns.com, b.share-dns.net`
SOA	1	`a.share-dns.com master.share-dns.com`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (a.share-dns.com)

Analysis

IP Addresses

programming-exercises.com resolves to a single IP: 172.80.89.141.

Other host names share IP numbers with programming-exercises.com; for instance tyc2f.com.

Name Servers

programming-exercises.com has two name servers: a.share-dns.com and b.share-dns.net.

programming-exercises.com shares the same name server setup as other domains, for example wsyxxy.com, 45814.com, fzqnrc.com, sdmaiku.com and almofakerah.com.

programming-exercises.com shares some name servers with other domains, for example tuanyuands.com, jmbzcake.com, baokao179.com, zx-ok.com and qiqio.net.

these name servers are often used with a1.share-dns.com, b1.share-dns.net, a5.share-dns.com, b5.share-dns.net, a4.share-dns.com, b4.share-dns.net, a7.share-dns.com, b7.share-dns.net, a2.share-dns.com and b2.share-dns.net.

Host names with a single IP:

a.share-dns.com points to 172.64.53.25

b.share-dns.net points to 172.64.52.239

programming-exercises.com - robtex.com