Domain Overview
DNS: ✓ 13h ago
Checker: ✓ 13h ago
arco.co.uk
Yes
✓ Yes
Outlook
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-07-01 02:54:06 UTC · ↺ Refresh
MX Hostnames
- arco-co-uk.mail.protection.outlook.com
MX Priorities
- arco-co-uk.mail.protection.outlook.com: 0
A / AAAA Records
- 45.60.46.45 (no PTR)
- 45.60.52.45 (no PTR)
Mail Server IPs
- 52.101.68.25 ↩ mail-db8pr02cu00101.inbound.protection.outlook.com
- 52.101.73.8 ↩ mail-am0pr04cu00500.inbound.protection.outlook.com
- 52.101.68.15 ↩ mail-db6pr03cu00107.inbound.protection.outlook.com
- 52.101.68.21 ↩ mail-db4pr02cu00205.inbound.protection.outlook.com
- 2a01:111:f403:ca04::b ↩ mail-dbbpr03cu00103.inbound.protection.outlook.com
- 2a01:111:f403:ca09::2 ↩ mail-am0pr83cu00402.inbound.protection.outlook.com
- 2a01:111:f403:ca09::6 ↩ mail-am4pr0401cu00106.inbound.protection.outlook.com
- 2a01:111:f403:ca09::c ↩ mail-as8pr05cu00304.inbound.protection.outlook.com
SOA Record
Raw SOA
a1-94.akam.net hostmaster.akamai.com 2018111177 28800 7200 604800 28800
Primary NS (mname)
a1-94.akam.net
Admin Email (rname)
hostmaster@akamai.com
Serial
2018111177
Refresh
28800s
Retry
7200s
Expire
604800s
Minimum TTL
28800s
Nameservers (NS)
a13-66.akam.net
a18-67.akam.net
a4-64.akam.net
a12-65.akam.net
a1-94.akam.net
a9-65.akam.net
SPF Record
✓ Strict (-all)
v=spf1 include:_s01029260.autospf.email -all
📊 DNS lookups: 1/10
✓ Hard fail (-all) — strict enforcement
DMARC Record
✓ Reject
v=DMARC1; p=reject; pct=1; rua=mailto:[email protected]; ruf=mailto:[email protected]; fo=1;
✓ Reject — strongest protection
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
⚠ Policy applies to 1% of failing messages only
DKIM Selectors
✗ None detectedNo DKIM records found for common selectors — your provider may use a custom selector name.
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
26 records- _globalsign-domain-verification=1EQblUCNsdJss66bYmeoT2radQgKiZQH1jv_xOu1H7
- atlassian-domain-verification=MNMlDxVkYU3/5GvR2ojkda86AvWNpoc7NkuMlM0lWKfqS6cfScWrodGixCELz8a7
- globalsign-domain-verification=44DA720E02DF15C7228B92832CD78C82
- globalsign-domain-verification=E5714669F15D2ADB8A7792FABD230871
- google-site-verification=Cd5tvbqrF7gnMtd_s0q2L2OyOWltOotagX8WwIX9nbg
- 33fsvsnhkcvkd9dn4lgk0425ps
- bv-domain-verification=882198362421e89d209c9c90044ca739f8a242ab0f8dfc3b81c1139208ab56a4
- _8kewiaf64cn9fm99ixjeqem0375bf9c
- globalsign-domain-verification=3CDA67625446C16C71A99BB587680229
- M7lQC7cHQ0HE/2NGzdAaFsOBGXTczxgHfS04/7ieBnezFzBQ0JG2NKuGH3AiNk9XsuZ3EAniwZst1kIoNf/Zhw==
- apple-domain-verification=BeWmpsHJSxLH40pV
- rf2eba16cb6ofr1am32infjl3a.
- 2b248d01-f8d6-401c-8f3c-aead6fe6dab9
- mq35fb6bkfdmgpm7ssbjshfmtb
- 9ddd6a61-9a34-4ee8-93ce-9680c236ea2c
- _dvbt7s2qran7rpythgqzhx1h560lojc
- MS=ms62898936
- +hJQQgYrq45vJc9eH8xSO6L50wKC0rj/yKZJ1OQobOz/ul6YDvEDxqzFoPD6LXZz2/oY4MObqLiop+PrEISNOw==
- facebook-domain-verification=03u4wyxv0sdnfyz0248vtcxta7zr14
- 62a8bb84-1178-4182-bbeb-c4ecf5699ed4
- docusign=c97f3be5-d28b-403f-9702-a1b330a13b6b
- SPFv=spf1 include:_s01029260.autospf.email -all
- p2ZUCu8ugk4W0l2AD2nhMWKrcHZo1V+8b6XVpNdg16m1RuBYfVmmRaoz+JfTOTA84nya/zW7/jwLYA1+0t8cBA==
- repz6bw.ng.impervadns.net
- globalsign-domain-verification=A85CD3A2DD0FB82BCCB735A154412EBC
- google-site-verification=0rpZawwRAQe7HOZeTuBvTnhyHqG2z8Ag3WRZHlFKB7E
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