o4.sgmail.github.com - dns.ninja

o4.sgmail.github.com

DNSSEC⚠️ Not signed
A192.254.112.99🇺🇸 ASN-SENDGRID192.254.112.0/20 Twilio, Inc. 1801 California Street Suite 500 Denver CO 80202 United States
PTRo4.sgmail.github.com
MXmxa.mailgun.org
A34.36.182.139🇺🇸 Google34.32.0.0/11
PTR139.182.36.34.bc.googleusercontent.com
MXmxb.mailgun.org
A34.149.254.5🇺🇸 Google34.148.0.0/14
PTR5.254.149.34.bc.googleusercontent.com

sgmail.github.com

DNSSEC⚠️ Not signed
A167.89.125.30🇺🇸 ASN-SENDGRID167.89.124.0/23 Twilio, Inc. 1801 California Street Suite 500 Denver CO 80202 United States
MXmx.sendgrid.net
TXTv=spf1 ip4:192.30.252.0/22 include:sendgrid.net ~all
WOT: SAFE (61/100)
WOT: SAFE (64/100)

PTR for

Same first word

Similar names

DNS History

3 records (3 active, 0 former)

MXmxa.mailgun.orgmxb.mailgun.orgA192.254.112.99
MXmxa.mailgun.org2026-02-23 → 2026-07-23 · 2 obs
● 2026-02-23 11:39:34
● 2026-07-23 11:21:12
MXmxb.mailgun.org2026-02-23 → 2026-07-23 · 2 obs
● 2026-02-23 11:39:34
● 2026-07-23 11:21:12
A192.254.112.992026-02-23 → 2026-07-23 · 2 obs
● 2026-02-23 11:39:34
● 2026-07-23 11:21:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
github.comns-520.awsdns-01.net, ns-421.awsdns-52.com, ns-1707.awsdns-21.co.uk, ns-1283.awsdns-32.org...2 records

✅ Authoritative Response

Server:198.51.45.72

NS records: ns-520.awsdns-01.net, ns-421.awsdns-52.com, ns-1707.awsdns-21.co.uk, ns-1283.awsdns-32.org, dns1.p08.nsone.net, dns2.p08.nsone.net, dns3.p08.nsone.net, dns4.p08.nsone.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for github.com (unsigned zone)

⏱️ Timing

Total: 329ms | Queries: -

📄 Records

TypeCountSample Data
A1192.254.112.99
MX2mxa.mailgun.org (pri: 10), mxb.mailgun.org (pri: 10)

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns-421.awsdns-52.com, ns-421.awsdns-52.com)

Analysis

IP Addresses

o4.sgmail.github.com resolves to one IP address: 192.254.112.99.

Mail Servers

Mail for o4.sgmail.github.com is handled by two mail servers — mxa.mailgun.org and mxb.mailgun.org.

o4.sgmail.github.com uses an identical mail server configuration to several other domains — among them chhipa.com, asvclean.com, chatchek.com and two more.

o4.sgmail.github.com has at least partial mail server overlap with other domains such as baypointflorida.org, mccabebarton.com, automotoworld.info and two more.

These mail servers commonly appear together with aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two other mail servers.

mxa.mailgun.org34.36.182.139 and mxb.mailgun.org34.149.254.5: one IP number per host name.