`mailprotonmail.ch`

DNSSEC	⚠️ Not signed
A	185.70.41.101^{🇨🇭 Proton185.70.41.0/24}
		PTR	`mail.protonmail.ch`
NS	`ns1.101domain.com` ⭐
		A	2400:cb00:2049:1::a29f:18ca^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns1.101domain.com`
		A	162.159.24.202^{Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.101domain.com`
NS	`ns2.101domain.com`
		A	2400:cb00:2049:1::a29f:199c^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns2.101domain.com`
		A	162.159.25.156^{Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.101domain.com`
NS	`ns5.101domain.com` ⚠️ Not in parent delegation
		A	2400:cb00:2049:1::a29f:18ca^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns1.101domain.com`
		A	2400:cb00:2049:1::a29f:199c^{🇺🇸 Cloudflare2400:cb00:2049::/48 , Inc. 101 Townsend Street}
			PTR	`ns2.101domain.com`
		A	162.159.24.202^{Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns1.101domain.com`
		A	162.159.25.156^{Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`ns2.101domain.com`
SOA	`ns1.101domain.com`ADMIN@mailprotonmail.ch 2021-06-28 #9

`ch`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.nic.ch` ⭐
	NS	`b.nic.ch`
	NS	`d.nic.ch`
	NS	`e.nic.ch`
	NS	`f.nic.ch`
	SOA	`a.nic.ch`dns-operation@switch.ch 2026-04-24 #2

⚠️ On DNS blocklist: tif

MX for

janheindejong.nl

Same first word

mailprotonmail.ch

DNS History

4 records (4 active, 0 former)

●NSns1.101domain.com2026-03-08 → 2026-04-23 · 2 obs

● 2026-03-08 21:43:04
● 2026-04-23 23:41:40

●NSns2.101domain.com2026-03-08 → 2026-04-23 · 2 obs

● 2026-03-08 21:43:04
● 2026-04-23 23:41:40

●NSns5.101domain.com2026-03-08 → 2026-04-23 · 2 obs

● 2026-03-08 21:43:04
● 2026-04-23 23:41:40

●A185.70.41.1012026-03-08 → 2026-04-23 · 2 obs

● 2026-03-08 21:43:04
● 2026-04-23 23:41:40

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	b.nic.ch, e.nic.ch, a.nic.ch, d.nic.ch...	-
mailprotonmail.ch	ns1.101domain.com, ns2.101domain.com	-

✅ Authoritative Response

Server:162.159.25.156

NS records: ns1.101domain.com, ns2.101domain.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mailprotonmail.ch (unsigned zone)

⏱️ Timing

Total: 584ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`185.70.41.101`
NS	3	`ns5.101domain.com, ns2.101domain.com...`
SOA	1	`ns1.101domain.com ADMIN.mailprotonmail.c`

Analysis

Mail Server Role

mailprotonmail.ch acts as a mail server for janheindejong.nl.

mailsec.protonmail.ch is commonly used as a mail server in conjunction with mailprotonmail.ch.

IP Addresses

mailprotonmail.ch points to a single IP number: 185.70.41.101.

Other host names, for instance ak4gs.com and onsitehelp1.mxpointer.com, share IP numbers with mailprotonmail.ch.

Name Servers

The domain mailprotonmail.ch is delegated to three name servers: ns1.101domain.com, ns2.101domain.com and ns5.101domain.com.

mailprotonmail.ch shares name servers with other domains at least partially, for instance robert-ortner.com, speedylinkage.com, foleyhoag.legal, triumph-x.com and digicomm.ae.

these name servers are commonly used together with ns2.rwgusa.net and ns.rwgusa.net.

Host names with four IP numbers:

The host name ns5.101domain.com points to: 2400:cb00:2049:1::a29f:18ca, 2400:cb00:2049:1::a29f:199c, 162.159.24.202 and 162.159.25.156.

Host names with two IP numbers:

The host name ns1.101domain.com points to: 2400:cb00:2049:1::a29f:18ca and 162.159.24.202.

The host name ns2.101domain.com points to: 2400:cb00:2049:1::a29f:199c and 162.159.25.156.

Host names that resolve to 2400:cb00:2049:1::a29f:18ca: ns5.101domain.com and ns1.101domain.com.

Host names that resolve to 2400:cb00:2049:1::a29f:199c: ns5.101domain.com and ns2.101domain.com.

Host names that resolve to 162.159.24.202: ns5.101domain.com and ns1.101domain.com.

Host names that resolve to 162.159.25.156: ns5.101domain.com and ns2.101domain.com.

mailprotonmail.ch - robtex.com