`responsum.app`

DNSSEC	⚠️ Not signed
A	5.22.208.248^{🇫🇮 UPCLOUD5.22.208.0/22 -NL-AMS1-NET}
		PTR	`5-22-208-248.nl-ams1.upcloud.host`
NS	`ns3.combell.net` ⭐
		A	2a00:1c98::53:1^{🇧🇪 COMBELL-AS2a00:1c98::/32 COMBELL Network}
			PTR	`ns3.combell.net`
		A	83.217.73.172^{🇧🇪 COMBELL-AS83.217.64.0/19 Combell Network}
			PTR	`ns3.combell.net`
NS	`ns1.combell.eu` ⚠️ Not in parent delegation
		A	2a00:1c98:50::50^{🇧🇪 COMBELL-AS2a00:1c98:50::/44}
		A	89.44.166.48^{🇧🇪 COMBELL-AS89.44.166.0/23 Combell Network}
			PTR	`89.44.166.48.static.hosted.by.combell-ops.net`
NS	`ns4.combell.net`
		A	2001:1598:0:101::3^{🇧🇪 EASYHOST-COLO-AS2001:1598::/32 Easyhost Network}
			PTR	`ns4.combell.net`
		A	86.39.202.67^{🇧🇪 EASYHOST-COLO-AS86.39.128.0/17 Easyhost Network}
			PTR	`ns4.combell.net`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c17::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f27.1e100.net`
		A	172.253.63.27^{🇺🇸 Google172.253.63.0/24}
			PTR	`bi-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1b^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.26^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f26.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2607:f8b0:4023:3003::1b^{🇺🇸 Google2607:f8b0::/32}
			PTR	`yulnkjt-in-f27.1e100.net`
		A	172.253.145.26^{🇺🇸 Google172.253.145.0/24}
			PTR	`yulnkjt-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1a^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f26.1e100.net`
		A	192.178.223.26^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f26.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2607:f8b0:4001:c70::1a^{🇺🇸 Google2607:f8b0:4001::/48}
			PTR	`yucbful-in-f26.1e100.net`
		A	192.178.209.27^{🇺🇸 Google192.178.209.0/24}
			PTR	`yucbful-in-f27.1e100.net`
TXT	`v=spf1 ip4:217.21.189.118 include:_spf.google.com include:spf.brevo.com -all`
TXT	`brevo-code:f30c58d1d0e5699d8b3f1adc2f4418e5`
TXT	`google-site-verification=6DiOhkLyQx3R7xgIRQ37Yv1XQRb0LouBFwp6uE5zoNI`
TXT	`have-i-been-pwned-verification=e2d252983f3d3905d4494938b1d7037d`
TXT	`google-site-verification=50YvIgfTN4ujnxuaTjCuS5hzMap13NyjER0aOcXuqXg`
SOA	`ns3.combell.net`hostmaster@responsum.app serial=1771946189

`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)

Same first word

responsum.eu

responsum.ai

responsum.org

responsum.se

responsum.lv

responsum.app

Similar names

menuspros.com

DNS History

9 records (9 active, 0 former)

●NSns1.combell.eu2026-02-19 → 2026-05-07 · 2 obs

● 2026-02-19 04:21:40
● 2026-05-07 13:34:28

●NSns3.combell.net2026-02-19 → 2026-05-07 · 2 obs

● 2026-02-19 04:21:40
● 2026-05-07 13:34:28

●NSns4.combell.net2026-02-19 → 2026-05-07 · 2 obs

● 2026-02-19 04:21:40
● 2026-05-07 13:34:28

●MXalt1.aspmx.l.google.com2026-02-19 → 2026-05-07 · 2 obs

● 2026-02-19 04:21:40
● 2026-05-07 13:34:28

●MXalt2.aspmx.l.google.com2026-02-19 → 2026-05-07 · 2 obs

● 2026-02-19 04:21:40
● 2026-05-07 13:34:28

●MXalt3.aspmx.l.google.com2026-02-19 → 2026-05-07 · 2 obs

● 2026-02-19 04:21:40
● 2026-05-07 13:34:28

●MXalt4.aspmx.l.google.com2026-02-19 → 2026-05-07 · 2 obs

● 2026-02-19 04:21:40
● 2026-05-07 13:34:28

●MXaspmx.l.google.com2026-02-19 → 2026-05-07 · 2 obs

● 2026-02-19 04:21:40
● 2026-05-07 13:34:28

●A5.22.208.2482026-02-19 → 2026-05-07 · 2 obs

● 2026-02-19 04:21:40
● 2026-05-07 13:34:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
app	ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...	10 records
responsum.app	ns4.combell.net, ns3.combell.net	-

✅ Authoritative Response

Server:86.39.202.67

NS records: ns4.combell.net, ns3.combell.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for responsum.app (unsigned zone)

⏱️ Timing

Total: 757ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`5.22.208.248`
NS	3	`ns3.combell.net, ns4.combell.net...`
MX	5	`alt4.aspmx.l.google.com (pri: 10), alt3.aspmx.l.google.com (pri: 10)...`
TXT	5	`brevo-code:f30c58d1d0e5699d8b3f1adc2f441, google-site-verification=50YvIgfTN4ujnxu...`
SOA	1	`ns3.combell.net hostmaster.responsum.app`

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

IP Addresses

responsum.app points to a single IP number: 5.22.208.248.

Other host names, for instance 5-22-208-248.nl-ams1.upcloud.host, cdn.cm.responsum.app and delivery.cm.responsum.app share IP numbers with responsum.app.

Name Servers

responsum.app is delegated to three name servers: ns1.combell.eu, ns3.combell.net and ns4.combell.net.

responsum.app at least partially shares name servers with other domains, for instance indevuilbak.be, 2020consult.eu, building4solutions.com, kebek.be and noprofitonpandemic.eu.

These name servers are commonly used with ns3.european-server.com, ns4.european-server.com and ns1.european-server.eu.

Host names with two IP numbers:

Host ns1.combell.eu points to 2a00:1c98:50::50 and 89.44.166.48.

Host ns3.combell.net points to 2a00:1c98::53:1 and 83.217.73.172.

Host ns4.combell.net points to 2001:1598:0:101::3 and 86.39.202.67.

Mail Servers

responsum.app is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

responsum.app shares mail servers with other domains at least partially, including 1stclass.co.jp, ashurst.net, accasia.net, hycboats.com and wreng.net.