`ws.support.github.com`

DNSSEC	⚠️ Not signed
A	140.82.112.21^{🇺🇸 GITHUB140.82.112.0/24 GitHub}
		PTR	`lb-140-82-112-21-iad.github.com`
A	140.82.112.22^{🇺🇸 GITHUB140.82.112.0/24 GitHub}
A	140.82.113.21^{🇺🇸 GITHUB140.82.113.0/24 GitHub}
A	140.82.113.22^{🇺🇸 GITHUB140.82.113.0/24 GitHub}
A	140.82.114.21^{🇺🇸 GITHUB140.82.114.0/24 GitHub}
A	140.82.114.22^{🇺🇸 GITHUB140.82.114.0/24 GitHub}

`support.github.com`

	DNSSEC	⚠️ Not signed
	A	185.199.108.133^{🇺🇸 Fastly185.199.108.0/24 GitHub - 185.199.108.0/24}
	A	185.199.109.133^{🇺🇸 Fastly185.199.109.0/24 GitHub - 185.199.109.0/24}
	A	185.199.110.133^{🇺🇸 Fastly185.199.110.0/24 GitHub - 185.199.110.0/24}
	A	185.199.111.133^{🇺🇸 Fastly185.199.111.0/24 GitHub - 185.199.111.0/24}
	MX	`aspmx.l.google.com` ⭐
	MX	`alt1.aspmx.l.google.com`⁽⁵⁾
	MX	`alt2.aspmx.l.google.com`⁽⁵⁾
	MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
	MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
	TXT	`v=spf1 include:_spf.google.com ~all`

WOT: SAFE (93/100)
WOT: SAFE (94/100)

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DNS History

6 records (6 active, 0 former)

●A140.82.112.212026-02-19 → 2026-03-10 · 2 obs

● 2026-02-19 19:37:40
● 2026-03-10 18:21:42

●A140.82.112.222026-02-19 → 2026-03-10 · 2 obs

● 2026-02-19 19:37:40
● 2026-03-10 18:21:42

●A140.82.113.212026-02-19 → 2026-03-10 · 2 obs

● 2026-02-19 19:37:40
● 2026-03-10 18:21:42

●A140.82.113.222026-02-19 → 2026-03-10 · 2 obs

● 2026-02-19 19:37:40
● 2026-03-10 18:21:42

●A140.82.114.212026-02-19 → 2026-03-10 · 2 obs

● 2026-02-19 19:37:40
● 2026-03-10 18:21:42

●A140.82.114.222026-02-19 → 2026-03-10 · 2 obs

● 2026-02-19 19:37:40
● 2026-03-10 18:21:42

🔍 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: 205.251.198.171

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: 423ms | Queries: -

📄 Records

Type	Count	Sample Data
A	6	`140.82.112.21, 140.82.112.22...`

📌 Glue Records Collected

Total: 1

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

Analysis

IP Addresses

ws.support.github.com points to six IP numbers: 140.82.112.21, 140.82.112.22, 140.82.113.21, 140.82.113.22, 140.82.114.21 and 140.82.114.22.

other host names include lb-140-82-114-21-iad.github.com, lb-140-82-114-22-iad.github.com, support-ws.github.com, git.io and lb-140-82-113-22-iad.github.com; they share IP numbers with ws.support.github.com.

ws.support.github.com - robtex.com