`polytechnicbd.com`

DNSSEC	⚠️ Not signed
A	2606:4700:3035::6815:3482^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:c789^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.52.130^{Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.199.137^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`amalia.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:265e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amalia.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c25e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`amalia.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:225e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`amalia.ns.cloudflare.com`
		A	108.162.194.94^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amalia.ns.cloudflare.com`
		A	162.159.38.94^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amalia.ns.cloudflare.com`
		A	172.64.34.94^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`amalia.ns.cloudflare.com`
NS	`clint.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b5a^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c15a^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`clint.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:215a^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`clint.ns.cloudflare.com`
		A	108.162.193.90^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
		A	172.64.33.90^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
		A	173.245.59.90^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`clint.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4	104.21.52.130, 172.67.199.137
		IPv6	2606:4700:3035::6815:3482, 2606:4700:3035::ac43:c789
SOA	`amalia.ns.cloudflare.com`dns@cloudflare.com serial=2397842366

`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

DNS History

10 records (6 active, 4 former)

●NSamalia.ns.cloudflare.com2026-03-10 → 2026-03-10 · 3 obs

○ 2017-11-04 01:22:06
● 2026-03-10 12:58:58
● 2026-03-10 12:59:00

●NSclint.ns.cloudflare.com2026-03-10 → 2026-03-10 · 3 obs

○ 2017-11-04 01:22:06
● 2026-03-10 12:58:58
● 2026-03-10 12:59:00

○NSns1.icticonbd.com2017-11-04 → 2017-11-04 · 3 obs

● 2017-11-04 01:22:06
○ 2026-03-10 12:58:58
○ 2026-03-10 12:59:00

○NSns2.icticonbd.com2017-11-04 → 2017-11-04 · 3 obs

● 2017-11-04 01:22:06
○ 2026-03-10 12:58:58
○ 2026-03-10 12:59:00

○MXpolytechnicbd.com2017-11-04 → 2017-11-04 · 3 obs

● 2017-11-04 01:22:06
○ 2026-03-10 12:58:58
○ 2026-03-10 12:59:00

●A104.21.52.1302026-03-10 → 2026-03-10 · 3 obs

○ 2017-11-04 01:22:06
● 2026-03-10 12:58:58
● 2026-03-10 12:59:00

●A172.67.199.1372026-03-10 → 2026-03-10 · 3 obs

○ 2017-11-04 01:22:06
● 2026-03-10 12:58:58
● 2026-03-10 12:59:00

○A206.217.128.742017-11-04 → 2017-11-04 · 3 obs

● 2017-11-04 01:22:06
○ 2026-03-10 12:58:58
○ 2026-03-10 12:59:00

●A2606:4700:3035::6815:34822026-03-10 → 2026-03-10 · 3 obs

○ 2017-11-04 01:22:06
● 2026-03-10 12:58:58
● 2026-03-10 12:59:00

●A2606:4700:3035::ac43:c7892026-03-10 → 2026-03-10 · 3 obs

○ 2017-11-04 01:22:06
● 2026-03-10 12:58:58
● 2026-03-10 12:59:00

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
polytechnicbd.com	clint.ns.cloudflare.com, amalia.ns.cloudflare.com	12 records

✅ Authoritative Response

Server: 108.162.193.90

NS records: clint.ns.cloudflare.com, amalia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for polytechnicbd.com (unsigned zone)

⏱️ Timing

Total: 266ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.199.137, 104.21.52.130`
AAAA	2	`2606:4700:3035::6815:3482, 2606:4700:3035::ac43:c789`
NS	2	`amalia.ns.cloudflare.com, clint.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`amalia.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (clint.ns.cloudflare.com, clint.ns.cloudflare.com, clint.ns.cloudflare.com...)

Analysis

IP Addresses

polytechnicbd.com maps to four IP numbers: 2606:4700:3035::6815:3482, 2606:4700:3035::ac43:c789, 104.21.52.130 and 172.67.199.137.

Other host names, for instance edel.digital, _dc-mx.8feff75d4252.ifsmarketing.com, szinex.com.cdn.cloudflare.net, automodelshop.ru and shortparagraph.com share IP numbers with polytechnicbd.com.

Name Servers

Two name servers amalia.ns.cloudflare.com and clint.ns.cloudflare.com are delegated to polytechnicbd.com.

polytechnicbd.com uses the same name server configuration as other domains, such as nulle-part.net, d2ch.com, fcsmolevichi.by, escritores.online and zacharywoodlee.com.

polytechnicbd.com at least partially shares name servers with other domains such as lghjsc.com, nmmsa.ca, leadmator.com, stake.pet and job3.org.

These name servers are commonly used with wally.ns.cloudflare.com and reese.ns.cloudflare.com.

Host names with six IP numbers: Host name amalia.ns.cloudflare.com points to 2606:4700:50::a29f:265e, 2803:f800:50::6ca2:c25e, 2a06:98c1:50::ac40:225e, 108.162.194.94, 162.159.38.94 and 172.64.34.94; host name clint.ns.cloudflare.com points to 2606:4700:58::adf5:3b5a, 2803:f800:50::6ca2:c15a, 2a06:98c1:50::ac40:215a, 108.162.193.90, 172.64.33.90 and 173.245.59.90.

polytechnicbd.com - robtex.com