dmarc.postmarkapp.com - robtex.com
dmarc.postmarkapp.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 50.31.156.10🇺🇸 SERVERCENTRAL50.31.128.0/18 | ||||||
| PTR | unknown.servercentral.net | ||||||
| MX | inbound.postmarkapp.com ⭐ | ||||||
| A | 52.2.5.255🇺🇸 Amazon52.2.0.0/15 EC2 IAD prefix | ||||||
| PTR | ec2-52-2-5-255.compute-1.amazonaws.com | ||||||
| A | 72.44.42.226🇺🇸 Amazon72.44.40.0/21 | ||||||
| PTR | ec2-72-44-42-226.compute-1.amazonaws.com | ||||||
| A | 107.22.71.110🇺🇸 Amazon107.22.0.0/16 EC2 IAD prefix | ||||||
| PTR | ec2-107-22-71-110.compute-1.amazonaws.com | ||||||
postmarkapp.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 94.247.142.1🇺🇸 CLOUDFLARESPECTRUM94.247.142.0/24 | ||||||
| NS | ns-1262.awsdns-29.org ⭐ | ||||||
| NS | ns-1657.awsdns-15.co.uk | ||||||
| NS | ns-229.awsdns-28.com | ||||||
| NS | ns-721.awsdns-26.net | ||||||
| MX | aspmx.l.google.com ⭐ | ||||||
| MX | alt1.aspmx.l.google.com(20) | ||||||
| MX | alt2.aspmx.l.google.com(20) | ||||||
| MX | aspmx2.googlemail.com(30) | ||||||
| MX | aspmx3.googlemail.com(30) | ||||||
| TXT | 01a65dddcd764010b6df567c88b8fb7d | ||||||
| TXT | abuseipdb-verification=QzehCZYK | ||||||
| TXT | digicert: 00577009 nagele@wildbit.com | ||||||
| TXT | google-site-verification=Bd-0GuslXF2wO_SnN_1pHncqvPZAuCOZxlGaly-V8zI | ||||||
| TXT | google-site-verification=CFwYqNoJsUkztxVzMjK8u1m0_BaklRvOZb5aecNTk8o | ||||||
| TXT | google-site-verification=aRqd5oLuMuPX2-qGutbokgWlmw76Gr68-v_Ryr0Pha8 | ||||||
| TXT | v=spf1 a mx include:spf.mtasv.net include:_spf.google.com include:cmail1.com ... | ||||||
| SOA | ns-1262.awsdns-29.orgawsdns-hostmaster@amazon.com serial=1 | ||||||
rank #19274 globally
rank #9505 in the tld
WOT: SAFE (82/100)
📈 Tranco rank: #23,387
Same first word
Similar names
DNS History
3 records (2 active, 1 former)
●MXinbound.postmarkapp.com2018-07-30 → 2026-05-10 · 2 obs
● 2026-05-10 00:09:54
●A50.31.156.102026-03-24 → 2026-05-10 · 3 obs
● 2026-03-24 10:08:30
● 2026-05-10 00:09:54
○A50.31.189.1112018-07-30 → 2018-07-30 · 3 obs
○ 2026-03-24 10:08:30
○ 2026-05-10 00:09:54
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, k.gtld-servers.net, m.gtld-servers.net, b.gtld-servers.net... | - |
| postmarkapp.com | ns-229.awsdns-28.com, ns-721.awsdns-26.net, ns-1657.awsdns-15.co.uk, ns-1262.awsdns-29.org | 2 records |
✅ Authoritative Response
Server:205.251.196.238
NS records: ns-229.awsdns-28.com, ns-721.awsdns-26.net, ns-1657.awsdns-15.co.uk, ns-1262.awsdns-29.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for postmarkapp.com (unsigned zone)
⏱️ Timing
Total: 239ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 50.31.156.10 |
| MX | 1 | inbound.postmarkapp.com (pri: 10) |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-229.awsdns-28.com, ns-229.awsdns-28.com)
Analysis
IP Addresses
dmarc.postmarkapp.com points to IP number: 50.31.156.10.
Mail Servers
dmarc.postmarkapp.com is handled by a single mail server, inbound.postmarkapp.com.
The mail server setup for dmarc.postmarkapp.com matches that of other domains, for instance csma.phidias.co, mail.manschap.nl, member.club-staging.net, gositelift.com and inbound.teamtailor.com.
dmarc.postmarkapp.com shares at least partially some mail servers with other domains, including overkill.wtf, fb-portal.com, sonline.us, blazeo.com and steez.studio.
these mail servers are often used together with mail servers aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and alt3.aspmx.l.google.com.
Host inbound.postmarkapp.com resolves to three IPs: 52.2.5.255, 72.44.42.226 and 107.22.71.110.