`mail.firstclasshc.com`

DNSSEC

⚠️ Not signed

`firstclasshc.com`

	DNSSEC	⚠️ Not signed
	A	2607:f1c0:100f:f000::200^{🇺🇸 IONOS-AS2607:f1c0::/32 1&1 Internet Inc. 701 Lee Rd, Suite 300 Chesterbrook, PA 19087 US}
	A	74.208.236.130^{🇺🇸 IONOS-AS74.208.0.0/16 IONOS Inc.}
	NS	`ns1038.ui-dns.de` ⭐
	NS	`ns1070.ui-dns.com`
	NS	`ns1072.ui-dns.org`
	NS	`ns1117.ui-dns.biz`
	MX	`mx00.ionos.com` ⭐
	MX	`mx01.ionos.com` ⭐
	TXT	`v=spf1 include:_spf-us.ionos.com ~all`
	SOA	`ns1038.ui-dns.de`hostmaster@1und1.com 2017-06-01 #10

Previously MX for

firstclasshc.com

Same first word

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DNS History

1 record (0 active, 1 former)

○A69.195.124.682015-07-01 → 2016-05-01 · 4 obs

● 2015-07-01 01:22:54
● 2016-05-01 07:43:32
○ 2026-04-15 10:45:52
○ 2026-04-15 10:45:54

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net, e.gtld-servers.net...	-
firstclasshc.com	ns1072.ui-dns.org, ns1038.ui-dns.de, ns1117.ui-dns.biz, ns1070.ui-dns.com	2 records

✅ Authoritative Response

Server:217.160.82.70

NS records: ns1072.ui-dns.org, ns1038.ui-dns.de, ns1117.ui-dns.biz, ns1070.ui-dns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstclasshc.com (unsigned zone)

⏱️ Timing

Total: 753ms | Queries: -

📄 Records

Type	Count	Sample Data

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1070.ui-dns.com, ns1070.ui-dns.com)

mail.firstclasshc.com - robtex.com