1by0.co - robtex.com
1by0.co
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::6815:3720🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:aa58🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.55.32Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.170.88🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | michael.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::a29f:2c0c🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | michael.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c30c🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | michael.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:230c🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | michael.ns.cloudflare.com | ||||||
| A | 108.162.195.12🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | michael.ns.cloudflare.com | ||||||
| A | 162.159.44.12Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | michael.ns.cloudflare.com | ||||||
| A | 172.64.35.12🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | michael.ns.cloudflare.com | ||||||
| NS | summer.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:2609🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | summer.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c209🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | summer.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2209🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | summer.ns.cloudflare.com | ||||||
| A | 108.162.194.9🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | summer.ns.cloudflare.com | ||||||
| A | 162.159.38.9Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | summer.ns.cloudflare.com | ||||||
| A | 172.64.34.9🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | summer.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.55.32, 172.67.170.88 | ||||||
| IPv6 hints | 2606:4700:3031::6815:3720, 2606:4700:3037::ac43:aa58 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=77, name=cloudflare-ech.com | ||||||
| SOA | michael.ns.cloudflare.comdns@cloudflare.com serial=2411506222 | ||||||
co
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | ns0.centralnic.net ⭐ | ||||||
| NS | a.registrydns.co | ||||||
| NS | b.registrydns.co | ||||||
| NS | c.registrydns.co | ||||||
| NS | d.registrydns.co | ||||||
| SOA | ns0.centralnic.nethostmaster@centralnic.net serial=1759727204 | ||||||
Same first word
Similar names
DNS History
10 records (6 active, 4 former)
●NSmichael.ns.cloudflare.com2026-07-22 → 2026-08-07 · 2 obs
● 2026-08-07 15:02:12
●NSsummer.ns.cloudflare.com2026-07-22 → 2026-08-07 · 2 obs
● 2026-08-07 15:02:12
●A104.21.55.322026-08-07 → 2026-08-07 · 2 obs
● 2026-08-07 15:02:12
●A172.67.170.882026-08-07 → 2026-08-07 · 2 obs
● 2026-08-07 15:02:12
○A188.114.96.02026-07-22 → 2026-07-22 · 2 obs
○ 2026-08-07 15:02:12
○A188.114.97.02026-07-22 → 2026-07-22 · 2 obs
○ 2026-08-07 15:02:12
●A2606:4700:3031::6815:37202026-08-07 → 2026-08-07 · 2 obs
● 2026-08-07 15:02:12
●A2606:4700:3037::ac43:aa582026-08-07 → 2026-08-07 · 2 obs
● 2026-08-07 15:02:12
○A2a06:98c1:3120::2026-07-22 → 2026-07-22 · 2 obs
○ 2026-08-07 15:02:12
○A2a06:98c1:3121::2026-07-22 → 2026-07-22 · 2 obs
○ 2026-08-07 15:02:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| co | a.registrydns.co, b.registrydns.co, c.registrydns.co, d.registrydns.co | - |
| 1by0.co | summer.ns.cloudflare.com, michael.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.35.12
NS records: summer.ns.cloudflare.com, michael.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 1by0.co (unsigned zone)
⏱️ Timing
Total: 362ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.170.88, 104.21.55.32 |
| AAAA | 2 | 2606:4700:3031::6815:3720, 2606:4700:3037::ac43:aa58 |
| NS | 2 | michael.ns.cloudflare.com, summer.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | michael.ns.cloudflare.com dns.cloudflare |
Analysis
IP Addresses
1by0.co points to the four IP addresses 104.21.55.32, 172.67.170.88, 2606:4700:3031::6815:3720 and 2606:4700:3037::ac43:aa58.
abofm.com, mercuriojoyeros.com, www.perfect-it.com.my plus two other host names have IP numbers in common with 1by0.co.
Name Servers
1by0.co has two authoritative name servers — michael.ns.cloudflare.com and summer.ns.cloudflare.com.
The name server configuration of 1by0.co is shared with other domains, for instance bfme.at, bj88.ai, ezha.in and two others.
There is at least partial name server overlap between 1by0.co and other domains — fancyfittings.com, xmap-global.com, butano.com and two more among them.
These name servers frequently co-occur with the name servers micah.ns.cloudflare.com and eoin.ns.cloudflare.com.
Hosts with 6 IP addresses each:
michael.ns.cloudflare.com points to 108.162.195.12, 162.159.44.12, 172.64.35.12 and 3 other IP addresses.
summer.ns.cloudflare.com points to 108.162.194.9, 162.159.38.9, 172.64.34.9 and 3 other IP addresses.