`rfsa.us`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::ac43:ca6d^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::6815:1625^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.22.37^{Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.202.109^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`lou.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3bc7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lou.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c1c7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`lou.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:21c7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`lou.ns.cloudflare.com`
		A	108.162.193.199^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lou.ns.cloudflare.com`
		A	172.64.33.199^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lou.ns.cloudflare.com`
		A	173.245.59.199^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`lou.ns.cloudflare.com`
NS	`sky.ns.cloudflare.com`
		A	2606:4700:50::a29f:2602^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sky.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c202^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`sky.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2202^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`sky.ns.cloudflare.com`
		A	108.162.194.2^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sky.ns.cloudflare.com`
		A	162.159.38.2^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sky.ns.cloudflare.com`
		A	172.64.34.2^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`sky.ns.cloudflare.com`
MX	`mail.rfsa.us` ⭐
		A	138.201.19.214^{🇩🇪 Hetzner138.201.0.0/16 HETZNER-RZ-BLK-ERX4}
			PTR	`static.214.19.201.138.clients.your-server.de`
TXT	`v=spf1 +mx +a +ip4:138.201.19.214 ip4:94.26.38.67 ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.22.37, 172.67.202.109
		IPv6 hints	2606:4700:3033::ac43:ca6d, 2606:4700:3037::6815:1625
SOA	`lou.ns.cloudflare.com`dns@cloudflare.com serial=2406515349

`us`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.cctld.us` ⭐
	NS	`b.cctld.us`
	NS	`f.cctld.us`
	NS	`k.cctld.us`
	NS	`m.cctld.us`
	NS	`n.cctld.us`
	NS	`w.cctld.us`
	NS	`x.cctld.us`
	NS	`y.cctld.us`
	SOA	`a.cctld.us`admin@tldns.godaddy serial=1784332943

Subdomains

mail.rfsa.us

Same first word

rfsa.at

rfsa.eu

rfsa.com.au

rfsa.org

rfsa.cn

rfsa.ch

rfsa.ru

rfsa.net

rfsa.co.uk

rfsa.de

rfsa.info

rfsa.us

rfsa.org.au

rfsa.edu

Similar names

sarf.se

rfas.org

afsr.biz

rsfa.info

rfas.hu

srfa.ro

sarf.com

fsra.com

safr.me

rasf.com.pk

afsr.net

rsaf.de

rafs.be

rasf.nl

rasf.eu

fsar.org

fars.us

fsra.net

asrf.com

sfra.pt

rsaf.net

sarf.co.za

afrs.info

afrs.pt

afsr.fr

fras.co.jp

arfs.co.za

rsfa.in

asrf.org

sfar.be

safr.org

sfar.net

afrs.ca

arfs.co.uk

fsra.fi

sraf.nl

fars.dk

rfas.no

fars.ch

frsa.org

afsr.se

sfra.com

rfas.uk

afrs.it

frsa.com.br

sfar.pl

sfar.it

fars.biz

sfra.eu

srfa.at

srfa.eu

fars.fr

afsr.ir

afrs.ro

fars.nl

rsaf.com

sfra.jp

sarf.nl

sraf.com

fras.name

frsa.net

frsa.ru

rafs.com.au

fars.se

sarf.org

arfs.in

arfs.se

frsa.asn.au

fasr.com

sfra.net

fasr.se

fasr.ru

afsr.info

safr.nl

fars.news

fras.no

arfs.net.au

fars.cn

frsa.ch

sfar.gov.rw

arsf.ro

fars.com.br

sfar.com

rsfa.org.tw

fars.app

fars.com

rsfa.ca

fras.pl

sarf.org.za

rsaf.cz

rasf.com

fras.at

sfar.co.il

rafs.pl

afrs.nl

DNS History

14 records (7 active, 7 former)

●NSlou.ns.cloudflare.com2026-06-09 → 2026-07-18 · 3 obs

○ 2019-03-06 05:42:16
● 2026-06-09 07:30:00
● 2026-07-18 00:18:20

○NSns43.worldnic.com2015-08-21 → 2019-03-06 · 4 obs

● 2015-08-21 23:06:12
● 2019-03-06 05:42:16
○ 2026-06-09 07:30:00
○ 2026-07-18 00:18:20

○NSns44.worldnic.com2015-08-21 → 2019-03-06 · 4 obs

● 2015-08-21 23:06:12
● 2019-03-06 05:42:16
○ 2026-06-09 07:30:00
○ 2026-07-18 00:18:20

●NSsky.ns.cloudflare.com2026-06-09 → 2026-07-18 · 3 obs

○ 2019-03-06 05:42:16
● 2026-06-09 07:30:00
● 2026-07-18 00:18:20

○MXinbound.rfsa.us.netsolmail.net2015-08-21 → 2017-01-22 · 4 obs

● 2015-08-21 23:06:12
● 2017-01-22 17:40:52
○ 2019-03-06 05:42:16
○ 2026-07-18 00:18:20

●MXmail.rfsa.us2026-06-09 → 2026-07-18 · 3 obs

○ 2019-03-06 05:42:16
● 2026-06-09 07:30:00
● 2026-07-18 00:18:20

○MXp.webcom.ctmail.com2019-03-06 → 2019-03-06 · 4 obs

○ 2017-01-22 17:40:52
● 2019-03-06 05:42:16
○ 2026-06-09 07:30:00
○ 2026-07-18 00:18:20

●A104.21.22.372026-06-09 → 2026-07-18 · 3 obs

○ 2019-03-06 05:42:16
● 2026-06-09 07:30:00
● 2026-07-18 00:18:20

●A172.67.202.1092026-06-09 → 2026-07-18 · 3 obs

○ 2019-03-06 05:42:16
● 2026-06-09 07:30:00
● 2026-07-18 00:18:20

○A206.188.193.1542015-08-21 → 2017-01-22 · 4 obs

● 2015-08-21 23:06:12
● 2017-01-22 17:40:52
○ 2019-03-06 05:42:16
○ 2026-07-18 00:18:20

○A208.91.197.272019-03-06 → 2019-03-06 · 4 obs

○ 2017-01-22 17:40:52
● 2019-03-06 05:42:16
○ 2026-06-09 07:30:00
○ 2026-07-18 00:18:20

○A2606:4700:3030::6815:16252026-06-09 → 2026-06-09 · 4 obs

○ 2019-03-06 05:42:16
● 2026-06-09 07:30:00
○ 2026-06-27 04:38:44
○ 2026-07-18 00:18:20

●A2606:4700:3033::ac43:ca6d2026-06-09 → 2026-07-18 · 3 obs

○ 2019-03-06 05:42:16
● 2026-06-09 07:30:00
● 2026-07-18 00:18:20

●A2606:4700:3037::6815:16252026-06-27 → 2026-07-18 · 3 obs

○ 2026-06-09 07:30:00
● 2026-06-27 04:38:44
● 2026-07-18 00:18:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
us	x.cctld.us, b.cctld.us, n.cctld.us, w.cctld.us...	-
rfsa.us	lou.ns.cloudflare.com, sky.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.34.2

NS records: lou.ns.cloudflare.com, sky.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rfsa.us (unsigned zone)

⏱️ Timing

Total: 358ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.202.109, 104.21.22.37`
AAAA	2	`2606:4700:3037::6815:1625, 2606:4700:3033::ac43:ca6d`
NS	2	`lou.ns.cloudflare.com, sky.ns.cloudflare.com`
MX	1	`mail.rfsa.us (pri: 1)`
TXT	1	`v=spf1 +mx +a +ip4:138.201.19.214 ip4:94`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`lou.ns.cloudflare.com dns.cloudflare.com`

Analysis

Hierarchy

rfsa.us is the parent zone for mail.rfsa.us.

IP Addresses

rfsa.us resolves to four IP addresses: 104.21.22.37, 172.67.202.109, 2606:4700:3033::ac43:ca6d and 2606:4700:3037::6815:1625.

Two other host names, along with rqjjpchq.efpgi.ronxehhtam.com, www.texdockrail.com and mitsuliftgroup.com, also share IP numbers with rfsa.us.

Name Servers

rfsa.us is served by two delegated name servers, lou.ns.cloudflare.com and sky.ns.cloudflare.com.

rfsa.us shares its NS records with other domains, for example 455055.com, denimit.com, ahvplus-initiative.ch and two others.

rfsa.us partially shares its NS delegation with several other domains, including 99jitusumo.com, xkench.com, m-flow-th.top and two others.

DNS names with 6 IP addresses:

lou.ns.cloudflare.com carries IP addresses 108.162.193.199, 172.64.33.199 and 173.245.59.199, with 3 other addresses beyond those.

sky.ns.cloudflare.com carries IP addresses 108.162.194.2, 162.159.38.2 and 172.64.34.2, with 3 other addresses beyond those.

Mail Servers

The sole mail server for rfsa.us is mail.rfsa.us.

There is one IP number for mail.rfsa.us: 138.201.19.214.

rfsa.us - robtex.com

rfsa.us

us

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`rfsa.us`

`us`