🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`github.is-a.dev`

DNSSEC	⚠️ Not signed
A	2606:4700::6812:467^{🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700::6812:567^{🇺🇸 Cloudflare2606:4700::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.18.4.103^{Cloudflare104.18.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.18.5.103^{Cloudflare104.18.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.18.4.103, 104.18.5.103
		IPv6 hints	2606:4700::6812:467, 2606:4700::6812:567

`is-a.dev`

	DNSSEC	⚠️ Not signed
	A	2606:50c0:8000::153^{🇺🇸 Fastly2606:50c0:8000::/48 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
	A	2606:50c0:8001::153^{🇺🇸 Fastly2606:50c0:8001::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
	A	2606:50c0:8002::153^{🇺🇸 Fastly2606:50c0:8002::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
	A	2606:50c0:8003::153^{🇺🇸 Fastly2606:50c0:8003::/48 + 88 Colin P Kelly Jr Street San Francisco CA 94107 United States}
	A	185.199.108.153^{🇺🇸 Fastly185.199.108.0/24 GitHub - 185.199.108.0/24}
	A	185.199.109.153^{🇺🇸 Fastly185.199.109.0/24 GitHub - 185.199.109.0/24}
	A	185.199.110.153^{🇺🇸 Fastly185.199.110.0/24 GitHub - 185.199.110.0/24}
	A	185.199.111.153^{🇺🇸 Fastly185.199.111.0/24 GitHub - 185.199.111.0/24}
	NS	`ns1.is-a.dev` ⭐
	NS	`ns2.is-a.dev`
	NS	`ns3.is-a.dev`
	NS	`ns4.is-a.dev`
	MX	`route1.mx.cloudflare.net` ⭐
	MX	`route3.mx.cloudflare.net`⁽³⁶⁾
	MX	`route2.mx.cloudflare.net`⁽⁶²⁾
	TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
	SOA	`ns1.is-a.dev`dns@cloudflare.com serial=2413433728

rank #92060 globally
rank #89 in the tld

is-a.dev

is-a.dev is a free service that lets developers claim a personalized subdomain (e.g.yourname.is-a.dev) by submitting a pull request to a public GitHub repository. It is run as an open-source, community-driven project rather than a commercial company.

Key facts

Owner / operator: is-a.dev project maintainers (open-source community, hosted via GitHub)
TLD:.dev— gTLD (Google-operated, HSTS-preloaded)
Primary purpose: free subdomain hosting/registration for developer projects and personal sites
Status: active

Notable subdomains or services

yourname.is-a.dev— custom subdomains issued to individual users/projects via GitHub pull request, typically pointed at personal sites, portfolios, or other hosting services

📈 Tranco rank: #117,287

Same first word

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github.site

github.gripe

github.am

github.games

github.cm

github.mobile

github.build

github.services

github.surf

github.sale

github.game.tw

github.de

github.red

github.support

github.in

github.digital

github.pw

github.cat

github.asia

github.no

github.run

github.s3.amazonaws.com

github.cn.com

github.hu

github.com.ru

github.icu

github.center

github.ws

github.careers

github.claims

github.com.br

github.guide

github.pfizer

github.co.jp

github.compare

github.global.ssl.fastly.net

github.nl

github.foo

github.co.uk

github.to

github.team

github.is-a.dev

github.dev

github.market

github.gg

github.ai

github.lt

github.ngrok.dev

github.xyz

github.net.pl

github.org

github.ngrok.pizza

github.org.uk

github.fi

github.ac.cn

github.nu

github.moe

github.biz

github.actor

github.london

github.help

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github.info

github.ch

github.chat

github.media

github.luxe

github.net.cn

github.sg

github.ge

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github.map.fastly.net

github.events

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github.blog

github.edu.kg

github.dev.br

github.earth

github.you

github.hl.cn

github.sa

github.ru

github.se

github.party

github.com.au

github.page

github.io

github.com

github.at

github.community

github.computer

github.net

github.click

github.tv

github.co

github.nz

github.casino

github.jp

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github.app

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github.online

githbu.ru

github.pt

github.me

github.org.cn

github.me.uk

github.works

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github.ee

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github.forum

hubgit.pages.dev

github.github.io

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github.name

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github.gallery

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guthib.xyz

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Previous names

Next names

DNS History

4 records (4 active, 0 former)

●A104.18.4.1032026-08-28 → 2026-08-28 · 2 obs

● 2026-08-28 10:37:56
● 2026-08-28 21:06:30

●A104.18.5.1032026-08-28 → 2026-08-28 · 2 obs

● 2026-08-28 10:37:56
● 2026-08-28 21:06:30

●A2606:4700::6812:4672026-08-28 → 2026-08-28 · 2 obs

● 2026-08-28 10:37:56
● 2026-08-28 21:06:30

●A2606:4700::6812:5672026-08-28 → 2026-08-28 · 2 obs

● 2026-08-28 10:37:56
● 2026-08-28 21:06:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...	-
is-a.dev	ns2.is-a.dev, ns3.is-a.dev, ns1.is-a.dev, ns4.is-a.dev	8 records

✅ Authoritative Response

Server:162.159.4.237

NS records: ns2.is-a.dev, ns3.is-a.dev, ns1.is-a.dev, ns4.is-a.dev

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 1310ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.18.4.103, 104.18.5.103`
AAAA	2	`2606:4700::6812:467, 2606:4700::6812:567`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (ns1.is-a.dev, ns1.is-a.dev, ns3.is-a.dev...)

Analysis

IP Addresses

github.is-a.dev directs to four IP numbers, which are 104.18.4.103, 104.18.5.103, 2606:4700::6812:467 and 2606:4700::6812:567.

bearingburdens.com, muhammadabdullah.is-a.dev, leo.is-a.dev and two other host names share IP numbers with github.is-a.dev.

github.is-a.dev - robtex.com

github.is-a.dev

is-a.dev

is-a.dev

Key facts

Notable subdomains or services

Same first word

Similar names

Previous names

Next names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

IP Addresses

`github.is-a.dev`

`is-a.dev`