`in-9.smtp.github.com`

DNSSEC	⚠️ Not signed
A	140.82.112.31^{🇺🇸 GITHUB140.82.112.0/24 GitHub}
		PTR	`in-9.smtp.github.com`

`smtp.github.com`

	DNSSEC	⚠️ Not signed
	A	140.82.112.31^{🇺🇸 GITHUB140.82.112.0/24 GitHub}
	A	140.82.112.32^{🇺🇸 GITHUB140.82.112.0/24 GitHub}
	A	140.82.113.31^{🇺🇸 GITHUB140.82.113.0/24 GitHub}
	A	140.82.113.32^{🇺🇸 GITHUB140.82.113.0/24 GitHub}
	A	140.82.114.31^{🇺🇸 GITHUB140.82.114.0/24 GitHub}
	A	140.82.114.32^{🇺🇸 GITHUB140.82.114.0/24 GitHub}

WOT: SAFE (94/100)
WOT: SAFE (94/100)

PTR for

31.112.82.140.in-addr.arpa

MX for

noreply.github.com

DNS History

1 record (1 active, 0 former)

●A140.82.112.312026-03-12 → 2026-04-13 · 2 obs

● 2026-03-12 14:43:08
● 2026-04-13 02:09:32

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	h.gtld-servers.net, e.gtld-servers.net, i.gtld-servers.net, g.gtld-servers.net...	-
github.com	ns-520.awsdns-01.net, ns-421.awsdns-52.com, ns-1707.awsdns-21.co.uk, ns-1283.awsdns-32.org...	1 record

✅ 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: 369ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`140.82.112.31`

📌 Glue Records Collected

Total: 1

Out-of-bailiwick: 1 (ns-421.awsdns-52.com)

Analysis

Mail Server Role

in-9.smtp.github.com serves as the mail server for noreply.github.com.

in-8.smtp.github.com, in-10.smtp.github.com and in-7.smtp.github.com are commonly used as mail servers together with in-9.smtp.github.com.

IP Addresses

in-9.smtp.github.com points to a single IP address: 140.82.112.31.

Other host names, for instance smtp.github.com, share IP numbers with in-9.smtp.github.com.

in-9.smtp.github.com - robtex.com