`semestr.org`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::6815:1cec^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:93ca^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.28.236^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.147.202^{🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`aryanna.ns.cloudflare.com` ⭐
		A	2606:4700:50::a29f:265f^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aryanna.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c25f^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`aryanna.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:225f^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`aryanna.ns.cloudflare.com`
		A	108.162.194.95^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aryanna.ns.cloudflare.com`
		A	162.159.38.95^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aryanna.ns.cloudflare.com`
		A	172.64.34.95^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`aryanna.ns.cloudflare.com`
NS	`salvador.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c64^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`salvador.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c364^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`salvador.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2364^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`salvador.ns.cloudflare.com`
		A	108.162.195.100^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`salvador.ns.cloudflare.com`
		A	162.159.44.100^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`salvador.ns.cloudflare.com`
		A	172.64.35.100^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`salvador.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.28.236, 172.67.147.202
		IPv6 hints	2606:4700:3036::6815:1cec, 2606:4700:3037::ac43:93ca
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=184, name=cloudflare-ech.com
SOA	`aryanna.ns.cloudflare.com`dns@cloudflare.com serial=2408597518

`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=1786655858

Same first word

semestr.pl

semestr.org

semestr.com

semestr.kz

semestr.ru

Similar names

stremes.be

semster.info

metsers.be

mesters.net

stremes.com

mesters.de

stremes.info

semster.de

mestres.de

tmesser.com

sermest.com

smstree.com

tresmes.com

termess.com

tessmer.email

stemers.com

mesters.com

metsers.eu

semster.org

estrems.com

emtress.com

mstrees.com

rssmeet.com

streems.com

tmesser.de

metsers.com

semster.nl

seterms.com

smeters.com

mesters.lv

tessmer.guru

treesms.com

mestres.fr

setrems.com

sermets.net

emsters.de

tessmer.expert

sertsem.com

mestres.es

tressme.com

tessmer.eu

mestres.pt

tessmer.de

mrestes.com

sermets.com

mestres.com

mestres.com.br

mestres.org

mesters.fr

semster.com

semster.net

messert.de

tessmer.org

treesms.in

mesters.be

mestres.net

DNS History

14 records (6 active, 8 former)

●NSaryanna.ns.cloudflare.com2026-08-03 → 2026-08-13 · 3 obs

○ 2015-10-26 02:57:08
● 2026-08-03 23:57:50
● 2026-08-13 22:07:58

○NSns1.sedoparking.com2015-07-19 → 2015-07-19 · 3 obs

● 2015-07-19 11:43:18
○ 2015-10-26 02:57:08
○ 2026-08-13 22:07:58

○NSns2.sedoparking.com2015-07-19 → 2015-07-19 · 3 obs

● 2015-07-19 11:43:18
○ 2015-10-26 02:57:08
○ 2026-08-13 22:07:58

●NSsalvador.ns.cloudflare.com2026-08-03 → 2026-08-13 · 3 obs

○ 2015-10-26 02:57:08
● 2026-08-03 23:57:50
● 2026-08-13 22:07:58

○MXmail.nickstel.com2015-07-19 → 2015-07-19 · 3 obs

● 2015-07-19 11:43:18
○ 2015-10-26 02:57:08
○ 2026-08-13 22:07:58

●A104.21.28.2362026-08-13 → 2026-08-13 · 2 obs

○ 2026-08-03 23:57:50
● 2026-08-13 22:07:58

●A172.67.147.2022026-08-13 → 2026-08-13 · 2 obs

○ 2026-08-03 23:57:50
● 2026-08-13 22:07:58

○A188.114.96.42026-08-03 → 2026-08-03 · 3 obs

○ 2015-10-26 02:57:08
● 2026-08-03 23:57:50
○ 2026-08-13 22:07:58

○A188.114.97.42026-08-03 → 2026-08-03 · 3 obs

○ 2015-10-26 02:57:08
● 2026-08-03 23:57:50
○ 2026-08-13 22:07:58

●A2606:4700:3036::6815:1cec2026-08-13 → 2026-08-13 · 2 obs

○ 2026-08-03 23:57:50
● 2026-08-13 22:07:58

●A2606:4700:3037::ac43:93ca2026-08-13 → 2026-08-13 · 2 obs

○ 2026-08-03 23:57:50
● 2026-08-13 22:07:58

○A2a06:98c1:3120::42026-08-03 → 2026-08-03 · 3 obs

○ 2015-10-26 02:57:08
● 2026-08-03 23:57:50
○ 2026-08-13 22:07:58

○A2a06:98c1:3121::42026-08-03 → 2026-08-03 · 3 obs

○ 2015-10-26 02:57:08
● 2026-08-03 23:57:50
○ 2026-08-13 22:07:58

○A72.52.4.1192015-07-19 → 2015-07-19 · 3 obs

● 2015-07-19 11:43:18
○ 2015-10-26 02:57:08
○ 2026-08-13 22:07:58

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
org	b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org	-
semestr.org	aryanna.ns.cloudflare.com, salvador.ns.cloudflare.com	-

✅ Authoritative Response

Server:162.159.38.95

NS records: aryanna.ns.cloudflare.com, salvador.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for semestr.org (unsigned zone)

⏱️ Timing

Total: 669ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.147.202, 104.21.28.236`
AAAA	2	`2606:4700:3036::6815:1cec, 2606:4700:3037::ac43:93ca`
NS	2	`aryanna.ns.cloudflare.com, salvador.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`aryanna.ns.cloudflare.com dns.cloudflare`

Analysis

IP Addresses

semestr.org has four IP addresses: 104.21.28.236, 172.67.147.202, 2606:4700:3036::6815:1cec and 2606:4700:3037::ac43:93ca.

Two other host names, along with expresswins.net, shopping-in-the-netherlands.exodia.org and d7755e91d549.bestquotesforinsurance.com, also share IP numbers with semestr.org.

Name Servers

DNS delegation for semestr.org points to two name servers: aryanna.ns.cloudflare.com and salvador.ns.cloudflare.com.

semestr.org shares its NS records with other domains, for example jadeoffers.info, dasble.com, mindprosoft.com and two others.

semestr.org shares at least some of its name servers with other domains, including mailindustry.com, hondacommunity.net, sahelhospital.com and two others.

These name servers are frequently paired with the name servers kallie.ns.cloudflare.com, cortney.ns.cloudflare.com and miguel.ns.cloudflare.com.

DNS names with 6 IP addresses:

aryanna.ns.cloudflare.com has IP addresses 108.162.194.95, 162.159.38.95 and 172.64.34.95, plus 3 other.

salvador.ns.cloudflare.com has IP addresses 108.162.195.100, 162.159.44.100 and 172.64.35.100, plus 3 other.

semestr.org - robtex.com

semestr.org

org

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

IP Addresses

Name Servers

`semestr.org`

`org`