`invitations-claude.com`

DNSSEC	⚠️ Not signed
NS	`ns1.ultahost.com` ⭐
		A	167.71.73.238^{🇳🇱 DIGITALOCEAN167.71.64.0/20 DigitalOcean}
			PTR	`ns1.ultahost.com`
NS	`ns2.ultahost.com`
		A	2001:41d0:701:1100::7e5^{🇩🇪 OVH2001:41d0::/32 IPv6}
			PTR	`ns2.ultahost.com`
		A	51.38.114.43^{🇫🇷 OVH51.38.0.0/16}
			PTR	`ns2.ultahost.com`
NS	`ns3.ultahost.com`
		A	2a01:4f8:c0c:79ee::1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`ns4.ultahost.com`
		A	94.130.75.18^{🇩🇪 Hetzner94.130.0.0/16 HETZNER-DC}
			PTR	`ns4.ultahost.com`
NS	`ns4.ultahost.com`
		A	2001:19f0:6402:4de:5400:2ff:fe93:34e8^{🇺🇸 AS-VULTR2001:19f0:6400::/38 Vultr Assigned Prefix}
		A	149.28.254.81^{🇺🇸 AS-VULTR149.28.240.0/20 Vultr Assigned Prefix}
			PTR	`ns4.ultahost.com`
MX	`mail.invitations-claude.com` ⭐
MX	`invitations-claude.com`⁽¹⁵⁾
TXT	`v=spf1 a mx ip4: ~all`
SOA	`ns1.ultahost.com`hostmaster@ultahost.com 2026-07-23 #16

`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=1785349062

⚠️ On DNS blocklist: tif

MX for

invitations-claude.com

Same first word

invitations-claude.com

Similar names

claude-invitations.com

DNS History

6 records (6 active, 0 former)

●NSns1.ultahost.com2026-07-27 → 2026-07-29 · 2 obs

● 2026-07-27 19:55:32
● 2026-07-29 18:33:08

●NSns2.ultahost.com2026-07-27 → 2026-07-29 · 2 obs

● 2026-07-27 19:55:32
● 2026-07-29 18:33:08

●NSns3.ultahost.com2026-07-27 → 2026-07-29 · 2 obs

● 2026-07-27 19:55:32
● 2026-07-29 18:33:08

●NSns4.ultahost.com2026-07-27 → 2026-07-29 · 2 obs

● 2026-07-27 19:55:32
● 2026-07-29 18:33:08

●MXinvitations-claude.com2026-07-27 → 2026-07-29 · 2 obs

● 2026-07-27 19:55:32
● 2026-07-29 18:33:08

●MXmail.invitations-claude.com2026-07-27 → 2026-07-29 · 2 obs

● 2026-07-27 19:55:32
● 2026-07-29 18:33:08

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, b.gtld-servers.net, m.gtld-servers.net, f.gtld-servers.net...	-
invitations-claude.com	ns1.ultahost.com, ns2.ultahost.com, ns3.ultahost.com, ns4.ultahost.com	4 records

✅ Authoritative Response

Server:149.28.254.81

NS records: ns1.ultahost.com, ns2.ultahost.com, ns3.ultahost.com, ns4.ultahost.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for invitations-claude.com (unsigned zone)

⏱️ Timing

Total: 3435ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	4	`ns3.ultahost.com, ns1.ultahost.com...`
MX	2	`invitations-claude.com (pri: 15), mail.invitations-claude.com (pri: 10)`
TXT	1	`v=spf1 a mx ip4: ~all`
SOA	1	`ns1.ultahost.com hostmaster.ultahost.com`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.ultahost.com, ns2.ultahost.com, ns3.ultahost.com...)

Analysis

Mail Server Role

invitations-claude.com serves as a mail server for invitations-claude.com.

mail.invitations-claude.com is often seen acting as a mail server in combination with invitations-claude.com.

Name Servers

Four name servers handle the delegation for invitations-claude.com: ns1.ultahost.com, ns2.ultahost.com, ns3.ultahost.com and ns4.ultahost.com.

The name servers of invitations-claude.com overlap at least partially with those of other domains — among them stakes-live.com, holybet88.co, invest-connect.net and two more.

Host names pointing to two IP addresses:

ns2.ultahost.com has two IP addresses: 51.38.114.43 and 2001:41d0:701:1100::7e5.

ns3.ultahost.com has two IP addresses: 94.130.75.18 and 2a01:4f8:c0c:79ee::1.

ns4.ultahost.com has two IP addresses: 149.28.254.81 and 2001:19f0:6402:4de:5400:2ff:fe93:34e8.

Host names resolving to a single IP address:

ns1.ultahost.com directs to 167.71.73.238.

Mail Servers

invitations-claude.com uses two mail servers, invitations-claude.com and mail.invitations-claude.com.

invitations-claude.com - robtex.com