mathnotes.cc - dns.ninja

mathnotes.cc

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:cb78πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A2606:4700:3036::6815:1651πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A104.21.22.81Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
A172.67.203.120πŸ‡ΊπŸ‡Έ Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US βœ“ In HTTPS hints
NSceleste.ns.cloudflare.com ⭐
A2606:4700:50::a29f:2607πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRceleste.ns.cloudflare.com
A2803:f800:50::6ca2:c207πŸ‡¨πŸ‡· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRceleste.ns.cloudflare.com
A2a06:98c1:50::ac40:2207πŸ‡ΊπŸ‡Έ Cloudflare2a06:98c1:50::/45
PTRceleste.ns.cloudflare.com
A108.162.194.7πŸ‡ΊπŸ‡Έ Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRceleste.ns.cloudflare.com
A162.159.38.7Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRceleste.ns.cloudflare.com
A172.64.34.7πŸ‡ΊπŸ‡Έ Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRceleste.ns.cloudflare.com
NSeric.ns.cloudflare.com
A2606:4700:58::adf5:3b70πŸ‡ΊπŸ‡Έ Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTReric.ns.cloudflare.com
A2803:f800:50::6ca2:c170πŸ‡¨πŸ‡· Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTReric.ns.cloudflare.com
A2a06:98c1:50::ac40:2170πŸ‡ΊπŸ‡Έ Cloudflare2a06:98c1:50::/45
PTReric.ns.cloudflare.com
A108.162.193.112πŸ‡ΊπŸ‡Έ Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTReric.ns.cloudflare.com
A172.64.33.112πŸ‡ΊπŸ‡Έ Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTReric.ns.cloudflare.com
A173.245.59.112πŸ‡ΊπŸ‡Έ Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTReric.ns.cloudflare.com
MXmail.mathnotes.cc ⭐
A46.62.144.45πŸ‡©πŸ‡ͺ Hetzner46.62.128.0/17 HETZNER-DC
PTRmail.mathnotes.cc
TXTv=spf1 mx ra=postmaster -all
HTTPSHTTP/3, HTTP/2 βœ“ hints match
IPv4 hints104.21.22.81, 172.67.203.120
IPv6 hints2606:4700:3030::ac43:cb78, 2606:4700:3036::6815:1651
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=228, name=cloudflare-ech.com
SOAceleste.ns.cloudflare.comdns@cloudflare.com serial=2405492632

cc

DNSSECπŸ”’ Signed (DS record present)
NSac1.nstld.com ⭐
NSac2.nstld.com
NSac3.nstld.com
NSac4.nstld.com
SOAac1.nstld.cominfo@verisign-grs.com serial=1781435729

PTR for

Same first word

Similar names

DNS History

29 records (7 active, 22 former)

20162017201820192020202120222023202420252026NSceleste.ns.cloudflare.comeric.ns.cloudflare.comdns1.name-services.comdns2.name-services.comdns3.name-services.comdns4.name-services.comdns5.name-services.comns-cloud-b1.googledomains.comns-cloud-b2.googledomains.comns-cloud-b3.googledomains.comns-cloud-b4.googledomains.comMXmail.mathnotes.ccalt1.aspmx.l.google.comalt2.aspmx.l.google.comaspmx.l.google.comaspmx2.googlemail.comaspmx3.googlemail.commx.zoho.commx2.zoho.commx3.zoho.comA104.21.22.81172.67.203.1202606:4700:3030::ac43:cb782606:4700:3036::6815:1651107.170.49.162217.147.184.2034.66.186.21050.142.232.6176.123.235.87
●NSceleste.ns.cloudflare.com2026-03-16 β†’ 2026-06-14 Β· 3 obs
β—‹ 2020-02-03 03:04:10
● 2026-03-16 02:45:58
● 2026-06-14 11:20:54
β—‹NSdns1.name-services.com2015-07-26 β†’ 2020-02-03 Β· 4 obs
● 2015-07-26 03:04:42
● 2020-02-03 03:04:10
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹NSdns2.name-services.com2015-07-26 β†’ 2020-02-03 Β· 4 obs
● 2015-07-26 03:04:42
● 2020-02-03 03:04:10
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹NSdns3.name-services.com2015-07-26 β†’ 2020-02-03 Β· 4 obs
● 2015-07-26 03:04:42
● 2020-02-03 03:04:10
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹NSdns4.name-services.com2015-07-26 β†’ 2020-02-03 Β· 4 obs
● 2015-07-26 03:04:42
● 2020-02-03 03:04:10
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹NSdns5.name-services.com2015-07-26 β†’ 2020-02-03 Β· 4 obs
● 2015-07-26 03:04:42
● 2020-02-03 03:04:10
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
●NSeric.ns.cloudflare.com2026-03-16 β†’ 2026-06-14 Β· 3 obs
β—‹ 2020-02-03 03:04:10
● 2026-03-16 02:45:58
● 2026-06-14 11:20:54
β—‹NSns-cloud-b1.googledomains.com2026-03-16 β†’ 2026-06-14 Β· 2 obs
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹NSns-cloud-b2.googledomains.com2026-03-16 β†’ 2026-06-14 Β· 2 obs
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹NSns-cloud-b3.googledomains.com2026-03-16 β†’ 2026-06-14 Β· 2 obs
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹NSns-cloud-b4.googledomains.com2026-03-16 β†’ 2026-06-14 Β· 2 obs
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹MXalt1.aspmx.l.google.com2015-07-26 β†’ 2020-02-03 Β· 4 obs
● 2015-07-26 03:04:42
● 2020-02-03 03:04:10
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹MXalt2.aspmx.l.google.com2015-07-26 β†’ 2020-02-03 Β· 4 obs
● 2015-07-26 03:04:42
● 2020-02-03 03:04:10
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹MXaspmx.l.google.com2015-07-26 β†’ 2020-02-03 Β· 4 obs
● 2015-07-26 03:04:42
● 2020-02-03 03:04:10
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹MXaspmx2.googlemail.com2015-07-26 β†’ 2020-02-03 Β· 4 obs
● 2015-07-26 03:04:42
● 2020-02-03 03:04:10
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹MXaspmx3.googlemail.com2015-07-26 β†’ 2020-02-03 Β· 4 obs
● 2015-07-26 03:04:42
● 2020-02-03 03:04:10
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
●MXmail.mathnotes.cc2026-05-24 β†’ 2026-06-14 Β· 3 obs
β—‹ 2026-05-22 06:46:32
● 2026-05-24 04:34:28
● 2026-06-14 11:20:54
β—‹MXmx.zoho.com2026-03-16 β†’ 2026-05-22 Β· 5 obs
β—‹ 2020-02-03 03:04:10
● 2026-03-16 02:45:58
● 2026-05-22 06:46:32
β—‹ 2026-05-24 04:34:28
β—‹ 2026-06-14 11:20:54
β—‹MXmx2.zoho.com2026-03-16 β†’ 2026-05-22 Β· 5 obs
β—‹ 2020-02-03 03:04:10
● 2026-03-16 02:45:58
● 2026-05-22 06:46:32
β—‹ 2026-05-24 04:34:28
β—‹ 2026-06-14 11:20:54
β—‹MXmx3.zoho.com2026-03-16 β†’ 2026-05-22 Β· 5 obs
β—‹ 2020-02-03 03:04:10
● 2026-03-16 02:45:58
● 2026-05-22 06:46:32
β—‹ 2026-05-24 04:34:28
β—‹ 2026-06-14 11:20:54
●A104.21.22.812026-04-24 β†’ 2026-06-14 Β· 3 obs
β—‹ 2026-03-16 02:45:58
● 2026-04-24 15:01:34
● 2026-06-14 11:20:54
β—‹A107.170.49.1622017-02-17 β†’ 2017-02-17 Β· 4 obs
β—‹ 2016-07-05 18:18:50
● 2017-02-17 12:35:58
β—‹ 2020-02-03 03:04:10
β—‹ 2026-06-14 11:20:54
●A172.67.203.1202026-04-24 β†’ 2026-06-14 Β· 3 obs
β—‹ 2026-03-16 02:45:58
● 2026-04-24 15:01:34
● 2026-06-14 11:20:54
β—‹A217.147.184.202026-03-16 β†’ 2026-06-14 Β· 2 obs
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
●A2606:4700:3030::ac43:cb782026-04-24 β†’ 2026-06-14 Β· 3 obs
β—‹ 2026-03-16 02:45:58
● 2026-04-24 15:01:34
● 2026-06-14 11:20:54
●A2606:4700:3036::6815:16512026-04-24 β†’ 2026-06-14 Β· 3 obs
β—‹ 2026-03-16 02:45:58
● 2026-04-24 15:01:34
● 2026-06-14 11:20:54
β—‹A34.66.186.2102020-02-03 β†’ 2020-02-03 Β· 4 obs
β—‹ 2017-02-17 12:35:58
● 2020-02-03 03:04:10
β—‹ 2026-03-16 02:45:58
β—‹ 2026-06-14 11:20:54
β—‹A50.142.232.612015-07-26 β†’ 2015-12-04 Β· 4 obs
● 2015-07-26 03:04:42
● 2015-12-04 16:19:34
β—‹ 2016-03-08 13:01:06
β—‹ 2026-06-14 11:20:54
β—‹A76.123.235.872016-03-08 β†’ 2016-07-05 Β· 5 obs
β—‹ 2015-12-04 16:19:34
● 2016-03-08 13:01:06
● 2016-07-05 18:18:50
β—‹ 2017-02-17 12:35:58
β—‹ 2026-06-14 11:20:54

πŸ” DNS Trace

πŸ“‹ Delegation Chain

ZoneNameserversGlue
ccac1.nstld.com, ac2.nstld.com, ac3.nstld.com, ac4.nstld.com-
mathnotes.ccceleste.ns.cloudflare.com, eric.ns.cloudflare.com-

βœ… Authoritative Response

Server:172.64.34.7

NS records: celeste.ns.cloudflare.com, eric.ns.cloudflare.com

πŸ”’ DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathnotes.cc (unsigned zone)

⏱️ Timing

Total: 366ms | Queries: -

πŸ“„ Records

TypeCountSample Data
A2104.21.22.81, 172.67.203.120
AAAA22606:4700:3036::6815:1651, 2606:4700:3030::ac43:cb78
NS2celeste.ns.cloudflare.com, eric.ns.cloudflare.com
MX1mail.mathnotes.cc (pri: 10)
TXT1v=spf1 mx ra=postmaster -all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1celeste.ns.cloudflare.com dns.cloudflare

Analysis

IP Addresses

mathnotes.cc points to the four IP addresses 104.21.22.81, 172.67.203.120, 2606:4700:3030::ac43:cb78 and 2606:4700:3036::6815:1651.

Two other host names, along with fuliappdown.com, 9ee739737a02.pizzafactory.biz and www.shangwaiwang.com, also share IP numbers with mathnotes.cc.

Name Servers

mathnotes.cc has two authoritative name servers β€” celeste.ns.cloudflare.com and eric.ns.cloudflare.com.

mathnotes.cc shares the same authoritative DNS setup with other domains, including pogonaut.com and goodranchers.com.

There is at least partial name server overlap between mathnotes.cc and other domains β€” innovativekitchens.com.au, myfiles57498.pages.dev, portblau.com and two more among them.

These name servers are routinely deployed together with the name servers javier.ns.cloudflare.com.

DNS names with 6 IP addresses:

celeste.ns.cloudflare.com points to 108.162.194.7, 162.159.38.7, 172.64.34.7 and 3 other IP addresses.

eric.ns.cloudflare.com points to 108.162.193.112, 172.64.33.112, 173.245.59.112 and 3 other IP addresses.

Mail Servers

The sole mail server for mathnotes.cc is mail.mathnotes.cc.

mail.mathnotes.cc points to one IP number β€” 46.62.144.45.