`proton.app`

DNSSEC	⚠️ Not signed
A	2a03:2880:f003:c07:face:b00c:0:2^{🇺🇸 Facebook2a03:2880:f003::/48 , Inc.}
		PTR	`edge-star6-shv-01-iad3.facebook.com`
A	31.13.66.4^{🇺🇸 Facebook31.13.66.0/24 , Inc.}
NS	`a.ns.facebook.com` ⭐
		A	2a03:2880:f0fc:c:face:b00c:0:35^{🇺🇸 Facebook2a03:2880:f0fc::/48}
			PTR	`a.ns.facebook.com`
		A	129.134.30.12^{🇺🇸 Facebook129.134.30.0/24 , Inc.}
			PTR	`a.ns.facebook.com`
NS	`b.ns.facebook.com`
		A	2a03:2880:f0fd:c:face:b00c:0:35^{🇺🇸 Facebook2a03:2880:f0fd::/48}
			PTR	`b.ns.facebook.com`
		A	129.134.31.12^{🇺🇸 Facebook129.134.31.0/24 , Inc.}
			PTR	`b.ns.facebook.com`
NS	`c.ns.facebook.com`
		A	2a03:2880:f1fc:c:face:b00c:0:35^{🇺🇸 Facebook2a03:2880:f1fc::/48}
			PTR	`c.ns.facebook.com`
		A	185.89.218.12^{🇮🇱 Facebook185.89.218.0/24}
			PTR	`c.ns.facebook.com`
NS	`d.ns.facebook.com`
		A	2a03:2880:f1fd:c:face:b00c:0:35^{🇺🇸 Facebook2a03:2880:f1fd::/48}
			PTR	`d.ns.facebook.com`
		A	185.89.219.12^{🇮🇱 Facebook185.89.219.0/24}
			PTR	`d.ns.facebook.com`
TXT	`1f22d470ddc84cd191bbf9fdf3470229`
TXT	`v=spf1 a ~all`
HTTPS	HTTP/2, HTTP/3
HTTPS	HTTP/2, HTTP/3
SOA	`a.ns.facebook.com`dns@facebook.com serial=4207849484

`app`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=101427

🔒 HSTS Preload (+subdomains)

Subdomains

my-od.proton.app

my-od-1.proton.app

Same first word

proton.info

proton.net.au

proton.hr

proton.red

proton.me

proton.gr

proton.name

proton.fr

proton.ge

proton.zone

proton.gen.tr

proton.gda.pl

proton.com.tr

proton.lg.ua

proton.education

proton.fi

proton.eu

proton.international

proton.tools

proton.my

proton.net.ua

proton.it

proton.dev

proton.rs

proton.us

proton.care

proton.nu

proton.ai

proton.ca

proton.be

proton.com.ro

proton.az

proton.ms

proton.md

proton.at

proton.co.za

proton.eu.org

proton.com

proton.ch

proton.org

proton.cx

proton.com.au

proton.biz

proton.awsapps.com

proton.cars

proton.energy

proton.ro

proton.support

proton.by

proton.net

proton.bike

proton.dk

proton.ru

proton.cn

proton.email

proton.pl

proton.com.ua

proton.sytes.net

proton.se

proton.doctor

proton.kiev.ua

proton.bz

proton.app

proton.tv

proton.org.cn

proton.tax

proton.cd

proton.co.uk

proton.hu

proton.in

proton.net.pl

proton.cc

proton.es

proton.nl

proton.digital

proton.hatenadiary.com

proton.pt

proton.si

proton.agency

proton.black

proton.com.pk

proton.kh.ua

proton.services

proton.global

proton.ie

proton.com.tw

proton.com.mx

proton.is

proton.je

proton.co.jp

proton.sg

proton.jp

proton.com.pl

proton.cz

Similar names

porton.jp

pontor.de

porton.net

optron.ca

pronto.com.au

porton.cl

pontor.pt

noptor.ru

tropon.com

pronto.com.co

pronto.no

(0x706f726e)to.com

to(0x706f726e).tv

optron.net

pronto.lease

(0x706f726e)ot.com

nortop.es

porton.com

pronto.net

rontop.com

pronto.it

to(0x706f726e).com

nproto.com

pronto.es

optron.pl

npotor.ru

noptor.cn

pronto.io

optron.co.jp

optron.de

tropon.de

onport.com.br

porton.nl

pronto.org

nporto.com

topron.com

pronto.com.ar

optron.ru

pontro.com.au

pronto.cz

pronto.be

pronto.ai

topnor.com

pronto.com.ua

porton.com.br

nortpo.org

nortop.ca

tonpro.ru

t(0x706f726e)o.com

optron.by

porton.pl

pronto.ru

portno.co.uk

optron.org

porton.com.mx

pronto.ly

topnor.no

pronto.pl

DNS History

14 records (6 active, 8 former)

●NSa.ns.facebook.com2026-02-16 → 2026-03-05 · 2 obs

● 2026-02-16 12:27:56
● 2026-03-05 17:13:08

●NSb.ns.facebook.com2026-02-16 → 2026-03-05 · 2 obs

● 2026-02-16 12:27:56
● 2026-03-05 17:13:08

●NSc.ns.facebook.com2026-02-16 → 2026-03-05 · 2 obs

● 2026-02-16 12:27:56
● 2026-03-05 17:13:08

●NSd.ns.facebook.com2026-02-16 → 2026-03-05 · 2 obs

● 2026-02-16 12:27:56
● 2026-03-05 17:13:08

○A157.240.214.12026-02-16 → 2026-02-25 · 6 obs

● 2026-02-16 12:27:56
○ 2026-02-22 18:30:28
○ 2026-02-25 04:54:16
● 2026-02-25 05:56:04
○ 2026-02-26 20:57:00
○ 2026-03-05 17:13:08

○A163.70.151.232026-03-04 → 2026-03-04 · 4 obs

○ 2026-03-04 22:17:28
● 2026-03-04 23:05:30
○ 2026-03-04 23:55:56
○ 2026-03-05 17:13:08

●A2a03:2880:f003:c07:face:b00c:0:22026-02-23 → 2026-03-05 · 13 obs

○ 2026-02-23 18:17:22
● 2026-02-23 18:52:40
● 2026-02-25 04:54:16
○ 2026-02-25 05:56:04
● 2026-02-26 20:57:00
○ 2026-02-27 19:46:16
● 2026-02-28 18:45:42
● 2026-03-03 23:55:54
○ 2026-03-04 19:30:34
● 2026-03-04 22:17:28
○ 2026-03-04 23:05:30
● 2026-03-04 23:55:56
● 2026-03-05 17:13:08

○A2a03:2880:f012:1:face:b00c:0:12026-02-22 → 2026-03-04 · 11 obs

○ 2026-02-16 12:27:56
● 2026-02-22 18:30:28
● 2026-02-23 18:17:22
○ 2026-02-23 18:52:40
○ 2026-02-26 20:57:00
● 2026-02-27 19:46:16
○ 2026-02-28 18:45:42
○ 2026-03-03 23:55:54
● 2026-03-04 19:30:34
○ 2026-03-04 22:17:28
○ 2026-03-05 17:13:08

○A2a03:2880:f058:100:face:b00c:0:22026-02-16 → 2026-02-25 · 6 obs

● 2026-02-16 12:27:56
○ 2026-02-22 18:30:28
○ 2026-02-25 04:54:16
● 2026-02-25 05:56:04
○ 2026-02-26 20:57:00
○ 2026-03-05 17:13:08

○A2a03:2880:f0a5:118:face:b00c:0:22026-03-04 → 2026-03-04 · 4 obs

○ 2026-03-04 22:17:28
● 2026-03-04 23:05:30
○ 2026-03-04 23:55:56
○ 2026-03-05 17:13:08

○A2a03:2880:f36f:8d:face:b00c:0:22026-02-16 → 2026-03-05 · 2 obs

○ 2026-02-16 12:27:56
○ 2026-03-05 17:13:08

●A31.13.66.42026-02-23 → 2026-03-05 · 13 obs

○A31.13.71.12026-02-22 → 2026-03-04 · 11 obs

○A57.144.222.1412026-02-16 → 2026-03-05 · 2 obs

○ 2026-02-16 12:27:56
○ 2026-03-05 17:13:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	10 records
proton.app	a.ns.facebook.com, d.ns.facebook.com, c.ns.facebook.com, b.ns.facebook.com	-

✅ Authoritative Response

Server: 129.134.30.12

NS records: a.ns.facebook.com, d.ns.facebook.com, c.ns.facebook.com, b.ns.facebook.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for proton.app (unsigned zone)

⏱️ Timing

Total: 815ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`31.13.66.4`
AAAA	1	`2a03:2880:f003:c07:face:b00c:0:2`
NS	4	`d.ns.facebook.com, b.ns.facebook.com...`
TXT	2	`1f22d470ddc84cd191bbf9fdf3470229, v=spf1 a ~all`
HTTPS	2	`{"priority":1,"target":".","alpn":["h2",, {"priority":2,"target":"star.fallback.c1`
SOA	1	`a.ns.facebook.com dns.facebook.com`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

Hierarchy

proton.app is parent of my-od.proton.app and my-od-1.proton.app.

IP Addresses

proton.app points to two IP numbers: 2a03:2880:f003:c07:face:b00c:0:2 and 31.13.66.4.

Other host names, for instance facebookworkmail.org, facebooksingles.net, bestfacebookstock.com, freeb6.com and facebookvip.com share IP numbers with proton.app.

Name Servers

proton.app is delegated to four name servers: a.ns.facebook.com, b.ns.facebook.com, c.ns.facebook.com and d.ns.facebook.com.

proton.app at least partially shares its name servers with other domains, for instance fplug.io, 250.171.69.in-addr.arpa, instagram.hk, instagramtakipcisatinal.net and facebooklogin.ws.

Host names with two IPs: a.ns.facebook.com points to 2a03:2880:f0fc:c:face:b00c:0:35 and 129.134.30.12; b.ns.facebook.com points to 2a03:2880:f0fd:c:face:b00c:0:35 and 129.134.31.12; c.ns.facebook.com points to 2a03:2880:f1fc:c:face:b00c:0:35 and 185.89.218.12; d.ns.facebook.com points to 2a03:2880:f1fd:c:face:b00c:0:35 and 185.89.219.12.

proton.app - robtex.com

proton.app

app

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

`proton.app`

`app`