🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`smtp.appengine.flow.ch`

	DNSSEC	⚠️ Not signed
	A	185.90.38.14^{🇨🇭 FLOW185.90.36.0/22 AS200759}
	A	185.90.38.20^{🇨🇭 FLOW185.90.36.0/22 AS200759}

`appengine.flow.ch`

	DNSSEC	⚠️ Not signed
	NS	`appengine.flow.ch` ⭐
	NS	`ns1.appengine.flow.ch` ⚠️ Not in parent delegation
	NS	`ns14.appengine.flow.ch`
	NS	`ns2.appengine.flow.ch` ⚠️ Not in parent delegation
	NS	`ns20.appengine.flow.ch`
	MX	`smtp.appengine.flow.ch` ⭐
	TXT	`v=spf1 ip4:185.90.38.14 ip4:185.90.38.20 ip4:185.119.86.4 ip4:185.119.86.5 ~all`
	SOA	`appengine.flow.ch`dns@appengine.flow.ch serial=2013405552

MX for

appengine.flow.ch

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DNS History

2 records (2 active, 0 former)

●A185.90.38.142026-02-14 → 2026-10-16 · 2 obs

● 2026-02-14 22:59:46
● 2026-10-16 22:12:38

●A185.90.38.202026-02-14 → 2026-10-16 · 2 obs

● 2026-02-14 22:59:46
● 2026-10-16 22:12:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
ch	b.nic.ch, e.nic.ch, a.nic.ch, d.nic.ch...	-
flow.ch	ns1.flow.ch, ns2.flow.ch	2 records
appengine.flow.ch	ns2.appengine.flow.ch, ns1.appengine.flow.ch	2 records

✅ Authoritative Response

Server:185.90.38.20

NS records: ns2.appengine.flow.ch, ns1.appengine.flow.ch

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for flow.ch (unsigned zone)

⏱️ Timing

Total: 630ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`185.90.38.14, 185.90.38.20`

📌 Glue Records Collected

Total: 4

In-bailiwick: 4 (ns1.flow.ch, ns2.flow.ch, ns1.appengine.flow.ch...)

Analysis

Mail Server Role

Mail for appengine.flow.ch is routed through the mail server smtp.appengine.flow.ch.

IP Addresses

smtp.appengine.flow.ch points to the IP addresses 185.90.38.14 and 185.90.38.20

16.118.49.appengine.flow.ch, getcarlp.appengine.flow.ch, 5nut.appengine.flow.ch plus two other host names have IP numbers in common with smtp.appengine.flow.ch.

smtp.appengine.flow.ch - robtex.com