`in-5.smtp.github.com`

DNSSEC	⚠️ Not signed
A	140.82.113.31^{🇺🇸 GITHUB140.82.113.0/24 GitHub}
		PTR	`in-5.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

31.113.82.140.in-addr.arpa

MX for

noreply.github.com

DNS History

1 record (1 active, 0 former)

●A140.82.113.312026-03-14 → 2026-04-12 · 2 obs

● 2026-03-14 18:27:04
● 2026-04-12 19:27:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.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:205.251.197.3

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: 294ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`140.82.113.31`

📌 Glue Records Collected

Total: 1

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

Analysis

Mail Server Role

in-5.smtp.github.com is the mail server for noreply.github.com.

in-8.smtp.github.com, in-10.smtp.github.com and in-9.smtp.github.com are commonly used as mail servers alongside in-5.smtp.github.com.

IP Addresses

in-5.smtp.github.com resolves to one IP number: 140.82.113.31.

Other host names such as in-ghae-a.smtp.github.com and smtp.github.com share IP numbers with in-5.smtp.github.com.

in-5.smtp.github.com - robtex.com