sempr.edu.pl - robtex.com

sempr.edu.pl

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:4d37🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:ccd5🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.77.55Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.204.213🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdora.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a6c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdora.ns.cloudflare.com
A2803:f800:50::6ca2:c06c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdora.ns.cloudflare.com
A2a06:98c1:50::ac40:206c🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdora.ns.cloudflare.com
A108.162.192.108🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdora.ns.cloudflare.com
A172.64.32.108🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdora.ns.cloudflare.com
A173.245.58.108🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdora.ns.cloudflare.com
NSkevin.ns.cloudflare.com
A2606:4700:58::adf5:3bbf🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkevin.ns.cloudflare.com
A2803:f800:50::6ca2:c1bf🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRkevin.ns.cloudflare.com
A2a06:98c1:50::ac40:21bf🇺🇸 Cloudflare2a06:98c1:50::/45
PTRkevin.ns.cloudflare.com
A108.162.193.191🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkevin.ns.cloudflare.com
A172.64.33.191🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkevin.ns.cloudflare.com
A173.245.59.191🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkevin.ns.cloudflare.com
MX_dc-mx.9a1e8aaffb92.sempr.edu.pl ⭐
A78.47.247.231🇩🇪 Hetzner78.46.0.0/15 HETZNER-RZ-NBG-BLK5
PTRip34.laohost.net
TXTv=spf1 redirect=s3.laohost.net
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.77.55, 172.67.204.213
IPv62606:4700:3033::6815:4d37, 2606:4700:3037::ac43:ccd5
SOAdora.ns.cloudflare.comdns@cloudflare.com serial=2397420275

edu.pl

DNSSEC⚠️ Not signed
NSa-dns.pl ⭐ ⚠️ Not in parent delegation 🔒
NSb-dns.pl ⚠️ Not in parent delegation 🔒
NSd-dns.pl ⚠️ Not in parent delegation 🔒
NSf-dns.pl ⚠️ Not in parent delegation 🔒
NSh-dns.pl ⚠️ Not in parent delegation 🔒
NSj-dns.pl ⚠️ Not in parent delegation 🔒
SOAa-dns.pldnsmaster@nask.pl serial=1772220604
WOT: SAFE (79/100)

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DNS History

13 records (7 active, 6 former)

20162017201820192020202120222023202420252026NSdora.ns.cloudflare.comkevin.ns.cloudflare.comns1.yupo.plns2.yupo.plMX_dc-mx.9a1e8aaffb92.sempr.edu.plmail.sempr.edu.plA104.21.77.55172.67.204.2132606:4700:3033::6815:4d372606:4700:3037::ac43:ccd5213.184.28.34213.184.31.11381.15.177.196
●NSdora.ns.cloudflare.com2026-02-15 → 2026-02-27 · 3 obs
○ 2016-09-09 12:12:16
● 2026-02-15 10:16:54
● 2026-02-27 20:13:48
●NSkevin.ns.cloudflare.com2026-02-15 → 2026-02-27 · 3 obs
○ 2016-09-09 12:12:16
● 2026-02-15 10:16:54
● 2026-02-27 20:13:48
○NSns1.yupo.pl2015-06-08 → 2016-09-09 · 4 obs
● 2015-06-08 17:40:36
● 2016-09-09 12:12:16
○ 2026-02-15 10:16:54
○ 2026-02-27 20:13:48
○NSns2.yupo.pl2015-06-08 → 2016-09-09 · 4 obs
● 2015-06-08 17:40:36
● 2016-09-09 12:12:16
○ 2026-02-15 10:16:54
○ 2026-02-27 20:13:48
●MX_dc-mx.9a1e8aaffb92.sempr.edu.pl2026-02-15 → 2026-02-27 · 3 obs
○ 2016-09-09 12:12:16
● 2026-02-15 10:16:54
● 2026-02-27 20:13:48
○MXmail.sempr.edu.pl2015-06-08 → 2016-09-09 · 4 obs
● 2015-06-08 17:40:36
● 2016-09-09 12:12:16
○ 2026-02-15 10:16:54
○ 2026-02-27 20:13:48
●A104.21.77.552026-02-15 → 2026-02-27 · 3 obs
○ 2016-09-09 12:12:16
● 2026-02-15 10:16:54
● 2026-02-27 20:13:48
●A172.67.204.2132026-02-15 → 2026-02-27 · 3 obs
○ 2016-09-09 12:12:16
● 2026-02-15 10:16:54
● 2026-02-27 20:13:48
○A213.184.28.342016-01-16 → 2016-01-16 · 4 obs
○ 2015-10-28 13:27:12
● 2016-01-16 22:08:40
○ 2016-04-02 04:06:52
○ 2026-02-27 20:13:48
○A213.184.31.1132016-04-02 → 2016-09-09 · 5 obs
○ 2016-01-16 22:08:40
● 2016-04-02 04:06:52
● 2016-09-09 12:12:16
○ 2026-02-15 10:16:54
○ 2026-02-27 20:13:48
●A2606:4700:3033::6815:4d372026-02-15 → 2026-02-27 · 3 obs
○ 2016-09-09 12:12:16
● 2026-02-15 10:16:54
● 2026-02-27 20:13:48
●A2606:4700:3037::ac43:ccd52026-02-15 → 2026-02-27 · 3 obs
○ 2016-09-09 12:12:16
● 2026-02-15 10:16:54
● 2026-02-27 20:13:48
○A81.15.177.1962015-06-08 → 2015-10-28 · 4 obs
● 2015-06-08 17:40:36
● 2015-10-28 13:27:12
○ 2016-01-16 22:08:40
○ 2026-02-27 20:13:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
pla-dns.pl, b-dns.pl, d-dns.pl, f-dns.pl...-
sempr.edu.plkevin.ns.cloudflare.com, dora.ns.cloudflare.com-

✅ Authoritative Response

Server: 172.64.32.108

NS records: kevin.ns.cloudflare.com, dora.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for sempr.edu.pl (unsigned zone)

⏱️ Timing

Total: 511ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.77.55, 172.67.204.213
AAAA22606:4700:3033::6815:4d37, 2606:4700:3037::ac43:ccd5
NS2dora.ns.cloudflare.com, kevin.ns.cloudflare.com
MX1_dc-mx.9a1e8aaffb92.sempr.edu.pl (pri: 1
TXT1v=spf1 redirect=s3.laohost.net
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1dora.ns.cloudflare.com dns.cloudflare.co

AI analysis

sempr.edu.pl points to four IP numbers: 2606:4700:3033::6815:4d37, 2606:4700:3037::ac43:ccd5, 104.21.77.55 and 172.67.204.213.

Other host names, for instance lofthatch.me, cpanel.predietplan.com, besttattooartistsatlanta.com, bolt.ntr-tech.com and jobs168.win share IP numbers with sempr.edu.pl.

sempr.edu.pl's delegation is to two name servers dora.ns.cloudflare.com and kevin.ns.cloudflare.com.

sempr.edu.pl shares the same name server configuration as other domains, such as psypdeh.gr, smartwealth.sg, i-cre8.com, filmstro.com and costway.ca.

sempr.edu.pl at least partially shares its name servers with other domains, for instance celestialsphere.org, typoworx.de, oleska.org, kolangrup.com and adam2k.com.

These name servers are often used together with the name servers major.ns.cloudflare.com.

Host names with six IP numbers:

dora.ns.cloudflare.com points to: 2606:4700:50::adf5:3a6c, 2803:f800:50::6ca2:c06c, 2a06:98c1:50::ac40:206c, 108.162.192.108, 172.64.32.108 and 173.245.58.108.

kevin.ns.cloudflare.com points to: 2606:4700:58::adf5:3bbf, 2803:f800:50::6ca2:c1bf, 2a06:98c1:50::ac40:21bf, 108.162.193.191, 172.64.33.191 and 173.245.59.191.

sempr.edu.pl is served by a single mail server, _dc-mx.9a1e8aaffb92.sempr.edu.pl.

_dc-mx.9a1e8aaffb92.sempr.edu.pl points to IP number 78.47.247.231.