`o2.sgmail.github.com`

DNSSEC	⚠️ Not signed
A	192.254.112.60^{🇺🇸 ASN-SENDGRID192.254.112.0/20 Twilio, Inc. 1801 California Street Suite 500 Denver CO 80202 United States}
		PTR	`o2.sgmail.github.com`
MX	`mxa.mailgun.org` ⭐
		A	34.149.236.64^{🇺🇸 Google34.148.0.0/14}
			PTR	`64.236.149.34.bc.googleusercontent.com`
MX	`mxb.mailgun.org` ⭐
		A	34.160.63.108^{🇺🇸 Google34.160.0.0/16}
			PTR	`108.63.160.34.bc.googleusercontent.com`

`sgmail.github.com`

	DNSSEC	⚠️ Not signed
	A	167.89.125.30^{🇺🇸 ASN-SENDGRID167.89.124.0/23 Twilio, Inc. 1801 California Street Suite 500 Denver CO 80202 United States}
	MX	`mx.sendgrid.net` ⭐
	TXT	`v=spf1 ip4:192.30.252.0/22 include:sendgrid.net ~all`

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

Same first word

o2.tv

o2.net.pl

o2.uk

o2.team

o2.cc

o2.co.za

o2.se

o2.net.kg

o2.ee

o2.fitness

o2.guru

o2.cz

o2.edu.vn

o2.ag

o2.fr

o2.co.kr

o2.rs

o2.net.br

o2.dev

o2.art.br

o2.net.ru

o2.ru

o2.co

o2.kiev.ua

o2.si

o2.sg

o2.business

o2.com.mx

o2.ro

o2.no

o2.com.es

o2.de

o2.com.au

o2.lk

o2.kz

o2.com.br

o2.la

o2.support

o2.church

o2.agency

o2.ua

o2.ventures

o2.at

o2.su

o2.io

o2.sk

o2.biz

o2.com

o2.com.tr

o2.nl

o2.bio

o2.by

o2.co.uk

o2.kg

o2.pro

o2.org

o2.com.pl

o2.ca

o2.nu

o2.to

o2.academy

o2.ae

o2.click

o2.events

o2.hu

o2.com.py

o2.pl

o2.ie

o2.net

o2.ma

o2.lol

o2.capital

o2.hr

o2.app

o2.com.hk

o2.eu

Similar names

2o.pl

2o.org

2o.cz

2o.be

2o.ca

2o.com

2o.cn

2o.fr

2o.cc

2o.net

2o.at

2o.si

2o.co

2o.cx

2o.de

2o.hu

2o.no

2o.cl

2o.nl

2o.dk

2o.hk

2o.house

DNS History

3 records (3 active, 0 former)

●MXmxa.mailgun.org2018-10-22 → 2026-03-29 · 2 obs

● 2018-10-22 17:24:36
● 2026-03-29 01:31:42

●MXmxb.mailgun.org2018-10-22 → 2026-03-29 · 2 obs

● 2018-10-22 17:24:36
● 2026-03-29 01:31:42

●A192.254.112.602018-10-22 → 2026-03-29 · 2 obs

● 2018-10-22 17:24:36
● 2026-03-29 01:31:42

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.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: 345ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`192.254.112.60`
MX	2	`mxa.mailgun.org (pri: 10), mxb.mailgun.org (pri: 10)`

📌 Glue Records Collected

Total: 1

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

Analysis

IP Addresses

o2.sgmail.github.com points to a single IP address: 192.254.112.60.

Mail Servers

o2.sgmail.github.com is handled by two mail servers: mxa.mailgun.org and mxb.mailgun.org.

o2.sgmail.github.com uses the same mail server setup as other domains, for instance beneo.teamwork.com, bgjooon.com, suncrestsg.com, trainingnj.com and grmaq.com.

o2.sgmail.github.com shares at least some mail servers with other domains, for example dagwaarde.nl, pendle.gov.uk, ezsqtech.com, shopwhey.com and go-checkin.com.

these mail servers are often used together with the mail servers aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

Hostnames with a single IP

mxa.mailgun.org resolves to: 34.149.236.64.

mxb.mailgun.org resolves to: 34.160.63.108.

o2.sgmail.github.com - robtex.com