flagstack.io - dns.ninja
flagstack.io
| DNSSEC | β οΈ Not signed | ||||||
| A | 2606:4700:3030::6815:49b8πΊπΈ Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| A | 2606:4700:3030::ac43:a540πΊπΈ Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| A | 104.21.73.184Cloudflare104.21.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| A | 172.67.165.64πΊπΈ Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US β In HTTPS hints | ||||||
| NS | bob.ns.cloudflare.com β | ||||||
| A | 2606:4700:58::adf5:3b68πΊπΈ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | bob.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c168π¨π· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | bob.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2168πΊπΈ Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | bob.ns.cloudflare.com | ||||||
| A | 108.162.193.104πΊπΈ Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | bob.ns.cloudflare.com | ||||||
| A | 172.64.33.104πΊπΈ Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | bob.ns.cloudflare.com | ||||||
| A | 173.245.59.104πΊπΈ Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | bob.ns.cloudflare.com | ||||||
| NS | rita.ns.cloudflare.com | ||||||
| A | 2606:4700:50::adf5:3a8cπΊπΈ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rita.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c08cπ¨π· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | rita.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:208cπΊπΈ Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | rita.ns.cloudflare.com | ||||||
| A | 108.162.192.140πΊπΈ Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rita.ns.cloudflare.com | ||||||
| A | 172.64.32.140πΊπΈ Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rita.ns.cloudflare.com | ||||||
| A | 173.245.58.140πΊπΈ Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | rita.ns.cloudflare.com | ||||||
| MX | in1-smtp.messagingengine.com β | ||||||
| A | 103.168.172.216πΊπΈ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | phl-mx-01.messagingengine.com | ||||||
| A | 103.168.172.217πΊπΈ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | phl-mx-02.messagingengine.com | ||||||
| A | 103.168.172.218πΊπΈ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | phl-mx-03.messagingengine.com | ||||||
| A | 103.168.172.219πΊπΈ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | phl-mx-04.messagingengine.com | ||||||
| A | 103.168.172.220πΊπΈ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | phl-mx-05.messagingengine.com | ||||||
| A | 103.168.172.221πΊπΈ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | phl-mx-06.messagingengine.com | ||||||
| A | 103.168.172.222πΊπΈ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | phl-mx-07.messagingengine.com | ||||||
| A | 103.168.172.223πΊπΈ TELX-AS151847103.168.172.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | phl-mx-08.messagingengine.com | ||||||
| MX | in2-smtp.messagingengine.com(20) | ||||||
| A | 202.12.124.216TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | stl-mx-01.messagingengine.com | ||||||
| A | 202.12.124.217TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | stl-mx-02.messagingengine.com | ||||||
| A | 202.12.124.218TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | stl-mx-03.messagingengine.com | ||||||
| A | 202.12.124.219TELX-AS151847202.12.124.0/24 Fastmail Pty Ltd Level 2, 114 William Street | ||||||
| PTR | stl-mx-04.messagingengine.com | ||||||
| TXT | v=spf1 include:spf.messagingengine.com ?all | ||||||
| HTTPS | HTTP/3, HTTP/2 β hints match | ||||||
| IPv4 hints | 104.21.73.184, 172.67.165.64 | ||||||
| IPv6 hints | 2606:4700:3030::6815:49b8, 2606:4700:3030::ac43:a540 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=246, name=cloudflare-ech.com | ||||||
| SOA | bob.ns.cloudflare.comdns@cloudflare.com serial=2412085158 | ||||||
io
| DNSSEC | π Signed (DS record present) | ||||||
| NS | a0.nic.io β | ||||||
| NS | a2.nic.io | ||||||
| NS | b0.nic.io | ||||||
| NS | c0.nic.io | ||||||
| SOA | a0.nic.iohostmaster@donuts.email serial=1788725798 | ||||||
Same first word
flagstack.net |
flagstack.io |
flagstack.dev |
Similar names
Previous names
Next names
DNS History
8 records (8 active, 0 former)
βNSbob.ns.cloudflare.com2026-08-31 β 2026-09-06 Β· 2 obs
β 2026-09-06 20:33:08
βNSrita.ns.cloudflare.com2026-08-31 β 2026-09-06 Β· 2 obs
β 2026-09-06 20:33:08
βMXin1-smtp.messagingengine.com2026-08-31 β 2026-09-06 Β· 2 obs
β 2026-09-06 20:33:08
βMXin2-smtp.messagingengine.com2026-08-31 β 2026-09-06 Β· 2 obs
β 2026-09-06 20:33:08
βA104.21.73.1842026-08-31 β 2026-09-06 Β· 2 obs
β 2026-09-06 20:33:08
βA172.67.165.642026-08-31 β 2026-09-06 Β· 2 obs
β 2026-09-06 20:33:08
βA2606:4700:3030::6815:49b82026-08-31 β 2026-09-06 Β· 2 obs
β 2026-09-06 20:33:08
βA2606:4700:3030::ac43:a5402026-08-31 β 2026-09-06 Β· 2 obs
β 2026-09-06 20:33:08
π DNS Trace
π Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | c0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io | 8 records |
| flagstack.io | bob.ns.cloudflare.com, rita.ns.cloudflare.com | - |
β Authoritative Response
Server:108.162.192.140
NS records: bob.ns.cloudflare.com, rita.ns.cloudflare.com
π DNSSEC Status
β οΈ Insecure (no DNSSEC)
No DS record for flagstack.io (unsigned zone)
β±οΈ Timing
Total: 1530ms | Queries: -
π Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.73.184, 172.67.165.64 |
| AAAA | 2 | 2606:4700:3030::6815:49b8, 2606:4700:3030::ac43:a540 |
| NS | 2 | bob.ns.cloudflare.com, rita.ns.cloudflare.com |
| MX | 2 | in1-smtp.messagingengine.com (pri: 10), in2-smtp.messagingengine.com (pri: 20) |
| TXT | 1 | v=spf1 include:spf.messagingengine.com ? |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | bob.ns.cloudflare.com dns.cloudflare.com |
π 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.