`swissproficiency.com`

DNSSEC	🔒 Signed (DS record present)
NS	`nsa.perf1.fr` ⭐
		A	2a01:c8:100::100^{🇫🇷 NAMESHIELD2a01:c8:100::/40 ANYCAST1-1}
			PTR	`nsa.perf1.fr`
		A	81.92.94.100^{🇫🇷 NAMESHIELD81.92.94.0/23 ANYCAST1-1}
			PTR	`nsa.perf1.fr`
NS	`nsb.perf1.com`
		A	2a01:c8:101::100^{🇫🇷 NAMESHIELD2a01:c8:100::/40 ANYCAST1-1}
			PTR	`nsb.perf1.com`
		A	81.92.95.100^{🇫🇷 NAMESHIELD81.92.94.0/23 ANYCAST1-1}
			PTR	`nsb.perf1.com`
NS	`nsc.perf1.com`
		A	2a09:35c0:102::100^{🇫🇷 NAMESHIELDGRP2a09:35c0:100::/40 NAMESHIELD ANYCAST1-2}
			PTR	`nsc.perf1.com`
		A	152.89.172.100^{🇫🇷 NAMESHIELDGRP152.89.172.0/23 NAMESHIELD ANYCAST1-2}
			PTR	`nsc.perf1.com`
SOA	`nsa.perf1.fr`technical@nameshield.net 2026-05-07 #1

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1778432236

Previously MX for

swissproficiency.com

Same first word

swissproficiency.com

DNS History

6 records (3 active, 3 former)

●NSnsa.perf1.fr2026-03-03 → 2026-05-10 · 2 obs

● 2026-03-03 23:56:38
● 2026-05-10 16:59:14

●NSnsb.perf1.com2026-03-03 → 2026-05-10 · 2 obs

● 2026-03-03 23:56:38
● 2026-05-10 16:59:14

●NSnsc.perf1.com2026-03-03 → 2026-05-10 · 2 obs

● 2026-03-03 23:56:38
● 2026-05-10 16:59:14

○MXswissproficiency.com2026-03-03 → 2026-04-12 · 4 obs

● 2026-03-03 23:56:38
● 2026-04-12 16:39:34
○ 2026-05-02 10:45:44
○ 2026-05-10 16:59:14

○A188.34.147.2022026-03-03 → 2026-04-12 · 4 obs

● 2026-03-03 23:56:38
● 2026-04-12 16:39:34
○ 2026-05-02 10:45:44
○ 2026-05-10 16:59:14

○A2a01:4f8:fff0:90::22026-03-03 → 2026-04-12 · 4 obs

● 2026-03-03 23:56:38
● 2026-04-12 16:39:34
○ 2026-05-02 10:45:44
○ 2026-05-10 16:59:14

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	k.gtld-servers.net, a.gtld-servers.net, i.gtld-servers.net, c.gtld-servers.net...	-
swissproficiency.com	nsb.perf1.com, nsc.perf1.com, nsa.perf1.fr	4 records

✅ Authoritative Response

Server:81.92.94.100

NS records: nsb.perf1.com, nsc.perf1.com, nsa.perf1.fr

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 255ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	3	`nsc.perf1.com, nsa.perf1.fr...`
SOA	1	`nsa.perf1.fr technical.nameshield.net`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (nsb.perf1.com, nsb.perf1.com, nsc.perf1.com...)

Analysis

Name Servers

The domain swissproficiency.com is delegated to three name servers: nsb.perf1.com, nsc.perf1.com and nsa.perf1.fr.

swissproficiency.com shares name servers with other domains at least partially, for instance my-hermes.ch, groupama.com, gravostoreusa.com, defipourlaterre.com and axians.at.

these name servers are commonly used with the name servers ns0.infravesi.com, ns1.infravesi.com, a.ns.developpement-durable.gouv.fr, b.ns.developpement-durable.gouv.fr, ns.hermesworld.com, ns1.coltfrance.com, dns2.caissedesdepots.fr, dns3.caissedesdepots.fr, dns5.caissedesdepots.fr and dns.caissedesdepots.fr.

Host names with two IP numbers:

nsb.perf1.com points to 2a01:c8:101::100 and 81.92.95.100

nsc.perf1.com points to 2a09:35c0:102::100 and 152.89.172.100

nsa.perf1.fr points to 2a01:c8:100::100 and 81.92.94.100

swissproficiency.com - robtex.com