flagstack.io - dns.ninja

πŸ›‘οΈDomain Reputation CheckBlocklist, phishing & malware statusβ†’

flagstack.io

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:49b8πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A2606:4700:3030::ac43:a540πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A104.21.73.184Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A172.67.165.64πŸ‡ΊπŸ‡Έ Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
NSbob.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b68πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbob.ns.cloudflare.com
A2803:f800:50::6ca2:c168πŸ‡¨πŸ‡· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRbob.ns.cloudflare.com
A2a06:98c1:50::ac40:2168πŸ‡ΊπŸ‡Έ Cloudflare2a06:98c1:50::/45
PTRbob.ns.cloudflare.com
A108.162.193.104πŸ‡ΊπŸ‡Έ Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbob.ns.cloudflare.com
A172.64.33.104πŸ‡ΊπŸ‡Έ Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbob.ns.cloudflare.com
A173.245.59.104πŸ‡ΊπŸ‡Έ Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRbob.ns.cloudflare.com
NSrita.ns.cloudflare.com
A2606:4700:50::adf5:3a8cπŸ‡ΊπŸ‡Έ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrita.ns.cloudflare.com
A2803:f800:50::6ca2:c08cπŸ‡¨πŸ‡· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRrita.ns.cloudflare.com
A2a06:98c1:50::ac40:208cπŸ‡ΊπŸ‡Έ Cloudflare2a06:98c1:50::/45
PTRrita.ns.cloudflare.com
A108.162.192.140πŸ‡ΊπŸ‡Έ Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrita.ns.cloudflare.com
A172.64.32.140πŸ‡ΊπŸ‡Έ Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrita.ns.cloudflare.com
A173.245.58.140πŸ‡ΊπŸ‡Έ Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRrita.ns.cloudflare.com
MXin1-smtp.messagingengine.com ⭐
A103.168.172.216πŸ‡ΊπŸ‡Έ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-01.messagingengine.com
A103.168.172.217πŸ‡ΊπŸ‡Έ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-02.messagingengine.com
A103.168.172.218πŸ‡ΊπŸ‡Έ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-03.messagingengine.com
A103.168.172.219πŸ‡ΊπŸ‡Έ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-04.messagingengine.com
A103.168.172.220πŸ‡ΊπŸ‡Έ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-05.messagingengine.com
A103.168.172.221πŸ‡ΊπŸ‡Έ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-06.messagingengine.com
A103.168.172.222πŸ‡ΊπŸ‡Έ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-07.messagingengine.com
A103.168.172.223πŸ‡ΊπŸ‡Έ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRphl-mx-08.messagingengine.com
MXin2-smtp.messagingengine.com(20)
A202.12.124.216TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-01.messagingengine.com
A202.12.124.217TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-02.messagingengine.com
A202.12.124.218TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-03.messagingengine.com
A202.12.124.219TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street
PTRstl-mx-04.messagingengine.com
TXTv=spf1 include:spf.messagingengine.com ?all
HTTPSHTTP/3, HTTP/2 βœ“ hints match
IPv4 hints104.21.73.184, 172.67.165.64
IPv6 hints2606:4700:3030::6815:49b8, 2606:4700:3030::ac43:a540
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=246, name=cloudflare-ech.com
SOAbob.ns.cloudflare.comdns@cloudflare.com serial=2412085158

io

DNSSECπŸ”’ Signed (DS record present)
NSa0.nic.io ⭐
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1788725798

Same first word

Similar names

Previous names

Next names

DNS History

8 records (8 active, 0 former)

NSbob.ns.cloudflare.comrita.ns.cloudflare.comMXin1-smtp.messagingengine.comin2-smtp.messagingengine.comA104.21.73.184172.67.165.642606:4700:3030::6815:49b82606:4700:3030::ac43:a540
●NSbob.ns.cloudflare.com2026-08-31 β†’ 2026-09-06 Β· 2 obs
● 2026-08-31 04:33:34
● 2026-09-06 20:33:08
●NSrita.ns.cloudflare.com2026-08-31 β†’ 2026-09-06 Β· 2 obs
● 2026-08-31 04:33:34
● 2026-09-06 20:33:08
●MXin1-smtp.messagingengine.com2026-08-31 β†’ 2026-09-06 Β· 2 obs
● 2026-08-31 04:33:34
● 2026-09-06 20:33:08
●MXin2-smtp.messagingengine.com2026-08-31 β†’ 2026-09-06 Β· 2 obs
● 2026-08-31 04:33:34
● 2026-09-06 20:33:08
●A104.21.73.1842026-08-31 β†’ 2026-09-06 Β· 2 obs
● 2026-08-31 04:33:34
● 2026-09-06 20:33:08
●A172.67.165.642026-08-31 β†’ 2026-09-06 Β· 2 obs
● 2026-08-31 04:33:34
● 2026-09-06 20:33:08
●A2606:4700:3030::6815:49b82026-08-31 β†’ 2026-09-06 Β· 2 obs
● 2026-08-31 04:33:34
● 2026-09-06 20:33:08
●A2606:4700:3030::ac43:a5402026-08-31 β†’ 2026-09-06 Β· 2 obs
● 2026-08-31 04:33:34
● 2026-09-06 20:33:08

πŸ” DNS Trace

πŸ“‹ Delegation Chain

ZoneNameserversGlue
ioc0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io8 records
flagstack.iobob.ns.cloudflare.com, rita.ns.cloudflare.com-

βœ… Authoritative Response

Server:108.162.192.140

NS records: bob.ns.cloudflare.com, rita.ns.cloudflare.com

πŸ”’ DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for flagstack.io (unsigned zone)

⏱️ Timing

Total: 1530ms | Queries: -

πŸ“„ Records

TypeCountSample Data
A2104.21.73.184, 172.67.165.64
AAAA22606:4700:3030::6815:49b8, 2606:4700:3030::ac43:a540
NS2bob.ns.cloudflare.com, rita.ns.cloudflare.com
MX2in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20)
TXT1v=spf1 include:spf.messagingengine.com ?
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1bob.ns.cloudflare.com dns.cloudflare.com

πŸ“Œ Glue Records Collected

Total: 8

In-bailiwick: 8 (c0.nic.io, c0.nic.io, a2.nic.io...)

Analysis

IP Addresses

flagstack.io resolves to four IP addresses: 104.21.73.184, 172.67.165.64, 2606:4700:3030::6815:49b8 and 2606:4700:3030::ac43:a540.

nu999aa.com, loopfietsstore.com, climax.de and two other host names share IP numbers with flagstack.io.

Name Servers

DNS delegation for flagstack.io points to two name servers: bob.ns.cloudflare.com and rita.ns.cloudflare.com.

flagstack.io uses the same name servers as several other domains β€” among them zipyapp.com, equalityandsafety-com.pages.dev, trixity.de and two more.

flagstack.io partially shares its NS delegation with several other domains, including alexandrosntonas.com, superafroman.com, collegiateclean.com and two others.

These name servers regularly co-occur with the name servers brianna.ns.cloudflare.com, violet.ns.cloudflare.com and cris.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

bob.ns.cloudflare.com has IP addresses 108.162.193.104, 172.64.33.104 and 173.245.59.104, plus 3 other.

rita.ns.cloudflare.com has IP addresses 108.162.192.140, 172.64.32.140 and 173.245.58.140, plus 3 other.

Mail Servers

Mail for flagstack.io is handled by two mail servers β€” in1-smtp.messagingengine.com and in2-smtp.messagingengine.com.

flagstack.io uses an identical mail server configuration to several other domains β€” among them lcpprivateequity.com, greeklish.net, arane.us and two more.

At least a portion of flagstack.io's mail servers are also used by other domains, for example mail.nrw.tockli.me.

Hostnames that resolve to 8 IP addresses:

in1-smtp.messagingengine.com has IP addresses 103.168.172.216, 103.168.172.217 and 103.168.172.218, plus 5 other.

Hosts that point to four IP numbers:

in2-smtp.messagingengine.com maps to the following IP addresses: 202.12.124.216, 202.12.124.217, 202.12.124.218 and 202.12.124.219.