`ul.pt`

DNSSEC	⚠️ Not signed
A	194.117.3.27^{🇵🇹 RCCN194.117.0.0/20 NET-UL-BLOCK-1}
NS	`a.ul.pt` ⭐
		A	2001:690:21c0:a::150^{🇵🇹 RCCN2001:690::/32 The Portuguese National Research & Education Network}
			PTR	`a.ul.pt`
		A	194.117.0.150^{🇵🇹 RCCN194.117.0.0/20 NET-UL-BLOCK-1}
			PTR	`a.ul.pt`
NS	`b.ul.pt`
		A	2001:690:21c0:b::150^{🇵🇹 RCCN2001:690::/32 The Portuguese National Research & Education Network}
			PTR	`b.ul.pt`
		A	194.117.1.150^{🇵🇹 RCCN194.117.0.0/20 NET-UL-BLOCK-1}
			PTR	`b.ul.pt`
NS	`c.ul.pt` ⚠️ Not in zone NS records
		A	40.85.126.21^{🇮🇪 Microsoft40.80.0.0/12}
MX	`mx21.ulisboa.pt` ⭐
		A	2001:690:21c0:74::106^{🇵🇹 RCCN2001:690::/32 The Portuguese National Research & Education Network}
			PTR	`mx21.ulisboa.pt`
		A	194.117.3.106^{🇵🇹 RCCN194.117.0.0/20 NET-UL-BLOCK-1}
			PTR	`mx21.ulisboa.pt`
MX	`mx22.ulisboa.pt` ⭐
		A	2001:690:21c0:74::107^{🇵🇹 RCCN2001:690::/32 The Portuguese National Research & Education Network}
			PTR	`mx22.ulisboa.pt`
		A	194.117.3.107^{🇵🇹 RCCN194.117.0.0/20 NET-UL-BLOCK-1}
			PTR	`mx22.ulisboa.pt`
MX	`mx23.ulisboa.pt` ⭐
		A	2001:690:21c0:f602::a39^{🇵🇹 RCCN2001:690::/32 The Portuguese National Research & Education Network}
		A	194.117.42.39^{🇵🇹 RCCN194.117.40.0/21 NET-UL-BLOCK-40-47}
			PTR	`mx23.ulisboa.pt`
MX	`mx24.ulisboa.pt` ⭐
		A	2001:690:21c0:f602::a40^{🇵🇹 RCCN2001:690::/32 The Portuguese National Research & Education Network}
			PTR	`mx24.ulisboa.pt`
		A	194.117.42.40^{🇵🇹 RCCN194.117.40.0/21 NET-UL-BLOCK-40-47}
			PTR	`mx24.ulisboa.pt`
TXT	`Universidade de Lisboa`
TXT	`google-site-verification=_41KiqxMo5DDhiQX6_-N97l0_xfhffodhVoyi4MW8zk`
TXT	`v=spf1 mx a:mx21.ulisboa.pt a:mx22.ulisboa.pt a:mx23.ulisboa.pt a:mx24.ulisbo...`
TXT	`MS=ms53031760`
TXT	`HARICA-0JwcsIDBvcHktFm2wGj`
SOA	`a.ul.pt`sistemas@reitoria.ulisboa.pt 2025-11-12 #14

`pt`

	DNSSEC	🔒 Signed (DS record present)
	NS	`curiosity.dns.pt` ⭐ 🔒
	NS	`a.dns.pt` 🔒
	NS	`b.dns.pt` 🔒
	NS	`c.dns.pt` 🔒
	NS	`d.dns.pt` 🔒
	NS	`e.dns.pt` 🔒
	NS	`g.dns.pt` 🔒
	NS	`h.dns.pt` 🔒
	NS	`ns.dns.br` ⚠️ Not in parent delegation 🔒
	NS	`ns2.nic.fr` ⚠️ Not in parent delegation 🔒
	SOA	`curiosity.dns.pt`request@dns.pt 2026-03-04 #11

rank #11753 globally
rank #17 in the tld
This domain "ul.pt" represents the official website for the University of Lisbon, a public research university in Portugal. The website provides information about the university, its faculties, courses, admission procedures, research, events, and contacts. It serves as a platform for both prospective and current students, faculty, researchers, and the general public interested in the university's activities.WOT: SAFE (88/100)
📈 Tranco rank: #18,908

Subdomains

idl.ul.pt

ul-web01.ul.pt

idp.ul.pt

ul-ns02.ul.pt

sim.ul.pt

ul-web02.ul.pt

caa.ul.pt

ul-idp01.ul.pt

ie.ul.pt

c.ul.pt

ul-fw01.ul.pt

net.ul.pt

sas.ul.pt

elearninglab.ul.pt

gw-ns.ul.pt

poced.ul.pt

mnhn.ul.pt

oal.ul.pt

b.ul.pt

proxy02.ul.pt

mygiaf.ul.pt

oraportal01.ul.pt

sibul.ul.pt

ul-ws02.ul.pt

ul-lbha0506.ul.pt

clul.ul.pt

listas.ul.pt

fm.ul.pt

ul-mailnlb01.ul.pt

fp.ul.pt

ul-moodle04.ul.pt

a.ul.pt

ceg.ul.pt

eduroam-teste.ul.pt

fc.ul.pt

www3.ul.pt

politecnica.ul.pt

museu-de-ciencia.ul.pt

fd.ul.pt

ul-clr-srv03.ul.pt

elearning.ul.pt

ul-ns01.ul.pt

museus.ul.pt

ics.ul.pt

fpce.ul.pt

iop.ul.pt

aaa.ul.pt

proxy01.ul.pt

www.ul.pt

eurachem.ul.pt

fmd.ul.pt

webmail.ul.pt

academicos.ul.pt

ff.ul.pt

repositorio.ul.pt

imap.ul.pt

campus.ul.pt

nic.ul.pt

Same first word

ul.de

ul.dk

ul.pt

ul.co

ul.ac.za

ul.si

ul.no

ul.sk

ul.kz

ul.gs

ul.hk

ul.se

ul.ie

ul.at

ul.idv.tw

ul.solutions

ul.life

ul.world

ul.cl

ul.digital

ul.edu.pk

ul.net

ul.by

ul.edu.lr

ul.fi

ul.gl

ul.tips

ul.nu

ul.com.hk

ul.live

ul.edu.ph

ul.am

ul.school

ul.pl

ul.com.br

ul.lu

ul.cz

ul.org

ul.ca

ul.do

ul.edu.co

ul.com.mx

ul.ae

ul.la

ul.com

ul.be

ul.cc

ul.cn

ul.org.cn

ul.fyi

ul.to

ul.su

ul.com.sg

ul.co.kr

ul.cm

ul.nl

ul.hu

ul.io

ul.ag

ul.wine

ul.ink

ul.al

ul.camera

ul.edu.lb

ul.gd

ul.ac

ul.eu

ul.ee

ul.co.za

Similar names

lu.pa

lu.net.au

lu.dk

lu.edu.af

lu.st

lu.no

lu.fr

lu.su

lu.tax

lu.am

lu.ci

lu.ee

lu

lu.me

lu.hu

lu.dev

lu.immo

lu.cards

lu.net

lu.kz

lu.org.ua

lu.mu

lu.ru

lu.ac.ir

lu.by

lu.com

lu.city

lu.uy

lu.net.ua

lu.com.pl

lu.solar

lu.nl

lu.ms

lu.eu.org

lu.kg

lu.ke

lu.gl

lu.ma

lu.cx

lu.gg

lu.my

lu.to

lu.ac

lu.co.nz

lu.be

lu.edu.qa

lu.cn

lu.pl

lu.dog

lu.rs

lu.lt

lu.lv

lu.is

lu.ch

lu.org

lu.vg

lu.edu.ph

lu.cloudns.org

lu.co.za

lu.se

lu.pizza

lu.ac.ae

lu.ph

lu.cc

lu.email

lu.cz

lu.net.ar

lu.cl

lu.ca

lu.s3-website.eu-west-3.amazonaws.com

lu.ws

lu.gs

DNS History

17 records (8 active, 9 former)

●NSa.ul.pt2015-09-02 → 2026-03-11 · 2 obs

● 2015-09-02 11:06:04
● 2026-03-11 01:52:38

●NSb.ul.pt2015-09-02 → 2026-03-11 · 2 obs

● 2015-09-02 11:06:04
● 2026-03-11 01:52:38

●NSc.ul.pt2019-08-27 → 2026-03-11 · 3 obs

○ 2015-09-02 11:06:04
● 2019-08-27 17:30:30
● 2026-03-11 01:52:38

○MXmx01.ulisboa.pt2015-09-02 → 2021-05-26 · 4 obs

● 2015-09-02 11:06:04
● 2021-05-26 00:49:32
○ 2021-09-19 15:30:04
○ 2026-03-11 01:52:38

○MXmx02.ulisboa.pt2015-09-02 → 2021-05-26 · 4 obs

● 2015-09-02 11:06:04
● 2021-05-26 00:49:32
○ 2021-09-19 15:30:04
○ 2026-03-11 01:52:38

○MXmx03.ulisboa.pt2015-09-02 → 2021-05-26 · 4 obs

● 2015-09-02 11:06:04
● 2021-05-26 00:49:32
○ 2021-09-19 15:30:04
○ 2026-03-11 01:52:38

○MXmx04.ulisboa.pt2015-09-02 → 2021-05-26 · 4 obs

● 2015-09-02 11:06:04
● 2021-05-26 00:49:32
○ 2021-09-19 15:30:04
○ 2026-03-11 01:52:38

○MXmx05.ulisboa.pt2021-05-26 → 2021-09-19 · 5 obs

○ 2019-08-27 17:30:30
● 2021-05-26 00:49:32
● 2021-09-19 15:30:04
○ 2026-02-14 16:35:48
○ 2026-03-11 01:52:38

○MXmx11.ulisboa.pt2019-08-27 → 2021-09-19 · 5 obs

○ 2015-09-02 11:06:04
● 2019-08-27 17:30:30
● 2021-09-19 15:30:04
○ 2026-02-14 16:35:48
○ 2026-03-11 01:52:38

○MXmx12.ulisboa.pt2019-08-27 → 2021-09-19 · 5 obs

○ 2015-09-02 11:06:04
● 2019-08-27 17:30:30
● 2021-09-19 15:30:04
○ 2026-02-14 16:35:48
○ 2026-03-11 01:52:38

○MXmx13.ulisboa.pt2019-08-27 → 2021-09-19 · 5 obs

○ 2015-09-02 11:06:04
● 2019-08-27 17:30:30
● 2021-09-19 15:30:04
○ 2026-02-14 16:35:48
○ 2026-03-11 01:52:38

○MXmx14.ulisboa.pt2019-08-27 → 2021-09-19 · 5 obs

○ 2015-09-02 11:06:04
● 2019-08-27 17:30:30
● 2021-09-19 15:30:04
○ 2026-02-14 16:35:48
○ 2026-03-11 01:52:38

●MXmx21.ulisboa.pt2026-02-14 → 2026-03-11 · 3 obs

○ 2021-09-19 15:30:04
● 2026-02-14 16:35:48
● 2026-03-11 01:52:38

●MXmx22.ulisboa.pt2026-02-14 → 2026-03-11 · 3 obs

○ 2021-09-19 15:30:04
● 2026-02-14 16:35:48
● 2026-03-11 01:52:38

●MXmx23.ulisboa.pt2026-02-14 → 2026-03-11 · 3 obs

○ 2021-09-19 15:30:04
● 2026-02-14 16:35:48
● 2026-03-11 01:52:38

●MXmx24.ulisboa.pt2026-02-14 → 2026-03-11 · 3 obs

○ 2021-09-19 15:30:04
● 2026-02-14 16:35:48
● 2026-03-11 01:52:38

●A194.117.3.272020-03-22 → 2026-03-11 · 2 obs

● 2020-03-22 01:22:34
● 2026-03-11 01:52:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
pt	a.dns.pt, b.dns.pt, c.dns.pt, d.dns.pt...	18 records
ul.pt	b.ul.pt, c.ul.pt, a.ul.pt	5 records

✅ Authoritative Response

Server: 194.117.1.150

NS records: b.ul.pt, c.ul.pt, a.ul.pt

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 3945ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`194.117.3.27`
NS	2	`b.ul.pt, a.ul.pt`
MX	4	`mx24.ulisboa.pt (pri: 50), mx21.ulisboa.pt (pri: 50)...`
TXT	5	`HARICA-0JwcsIDBvcHktFm2wGj, Universidade de Lisboa...`
SOA	1	`a.ul.pt sistemas.reitoria.ulisboa.pt`

📌 Glue Records Collected

Total: 23

In-bailiwick: 19 (a.dns.pt, b.dns.pt, c.dns.pt...)

Out-of-bailiwick: 4 (ns.dns.br, ns2.nic.fr, ns.dns.br...)

Analysis

Hierarchy

ul.pt is a parent of idl.ul.pt, ul-web01.ul.pt, idp.ul.pt, ul-ns02.ul.pt, sim.ul.pt and a few other host names.

IP Addresses

ul.pt points to a single IP address: 194.117.3.27.

Other host names such as ul-web11.ulisboa.pt, ulisboa.pt, noitedosinvestigadores.org, belasartes.ulisboa.pt and ff.ul.pt share IPs with ul.pt.

Name Servers

ul.pt is delegated to three name servers: a.ul.pt, b.ul.pt and c.ul.pt.

ul.pt at least partially shares name servers with other domains, for example fa.ulisboa.pt, galextin.org, poced.ul.pt, mnhn.ul.pt and 10.117.194.in-addr.arpa.

these name servers are commonly used with the following name servers: ns01.fc.ul.pt, ns02.fc.ul.pt, dns.di.fc.ul.pt, ns1.tecnico.ulisboa.pt, ns2.tecnico.ulisboa.pt, ns01.fmh.utl.pt, ns1.isa.ulisboa.pt, ns2.isa.ulisboa.pt, africa.iscsp.utl.pt and ns01.fa.ulisboa.pt.

Host names with two IPs:

a.ul.pt points to 2001:690:21c0:a::150 and 194.117.0.150.

b.ul.pt points to 2001:690:21c0:b::150 and 194.117.1.150.

Host names with one IP:

c.ul.pt points to 40.85.126.21.

Mail Servers

ul.pt is served by four mail servers: mx21.ulisboa.pt, mx22.ulisboa.pt, mx23.ulisboa.pt and mx24.ulisboa.pt.

ul.pt shares at least partially some mail servers with other domains, for instance ptmat.fc.ul.pt, alunos.fc.ul.pt, di.fc.ul.pt, gfm.cii.fc.ul.pt and clul.ul.pt.

these mail servers are often used together with mx11.ulisboa.pt, mx12.ulisboa.pt, mx13.ulisboa.pt and mx14.ulisboa.pt.

Host names with two IP numbers:

mx21.ulisboa.pt points to: 2001:690:21c0:74::106 and 194.117.3.106

mx22.ulisboa.pt points to: 2001:690:21c0:74::107 and 194.117.3.107

mx23.ulisboa.pt points to: 2001:690:21c0:f602::a39 and 194.117.42.39

mx24.ulisboa.pt points to: 2001:690:21c0:f602::a40 and 194.117.42.40

ul.pt - robtex.com

ul.pt

pt

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`ul.pt`

`pt`