sf2.org - robtex.com
sf2.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 202.172.28.62🇯🇵 DRNET202.172.24.0/21 | ||||||
| PTR | s61.coreserver.jp | ||||||
| NS | ns1.value-domain.com ⭐ | ||||||
| A | 172.64.52.38🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns2.value-domain.com | ||||||
| A | 172.64.53.3🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns3.value-domain.com ⚠️ Not in zone NS records | ||||||
| A | 172.64.52.38🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns4.value-domain.com ⚠️ Not in zone NS records | ||||||
| A | 172.64.53.3🇺🇸 Cloudflare172.64.53.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | ns5.value-domain.com ⚠️ Not in zone NS records | ||||||
| A | 172.64.52.38🇺🇸 Cloudflare172.64.52.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| MX | sf2.org ⭐ | ||||||
| A | 202.172.28.62🇯🇵 DRNET202.172.24.0/21 | ||||||
| PTR | s61.coreserver.jp | ||||||
| TXT | v=spf1 ip4:202.172.28.62 ~all | ||||||
| SOA | ns1.value-domain.comhostmaster@sf2.org 2020-08-26 #20 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1786598744 | ||||||
Subdomains
www.sf2.org |
Same first word
Similar names
DNS History
7 records (7 active, 0 former)
●NSns1.value-domain.com2015-06-09 → 2026-08-13 · 2 obs
● 2026-08-13 05:37:46
●NSns2.value-domain.com2015-06-09 → 2026-08-13 · 2 obs
● 2026-08-13 05:37:46
●NSns3.value-domain.com2026-08-13 → 2026-08-13 · 3 obs
● 2026-08-13 05:37:44
● 2026-08-13 05:37:46
●NSns4.value-domain.com2026-08-13 → 2026-08-13 · 3 obs
● 2026-08-13 05:37:44
● 2026-08-13 05:37:46
●NSns5.value-domain.com2026-08-13 → 2026-08-13 · 3 obs
● 2026-08-13 05:37:44
● 2026-08-13 05:37:46
●MXsf2.org2015-06-09 → 2026-08-13 · 2 obs
● 2026-08-13 05:37:46
●A202.172.28.622015-06-09 → 2026-08-13 · 2 obs
● 2026-08-13 05:37:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, d0.org.afilias-nst.org, b0.org.afilias-nst.org | - |
| sf2.org | ns5.value-domain.com, ns4.value-domain.com, ns3.value-domain.com, ns2.value-domain.com... | - |
✅ Authoritative Response
Server:172.64.53.3
NS records: ns5.value-domain.com, ns4.value-domain.com, ns3.value-domain.com, ns2.value-domain.com, ns1.value-domain.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sf2.org (unsigned zone)
⏱️ Timing
Total: 562ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 202.172.28.62 |
| NS | 2 | ns1.value-domain.com, ns2.value-domain.com |
| MX | 1 | sf2.org (pri: 10) |
| TXT | 1 | v=spf1 ip4:202.172.28.62 ~all |
| SOA | 1 | ns1.value-domain.com hostmaster.sf2.org |
Analysis
Hierarchy
sf2.org is a parent domain of www.sf2.org.
IP Addresses
sf2.org points to a single IP number: 202.172.28.62.
Additional host names — dayoffice.net, www.br-nail.com, www.weboy.biz and two others — share IP numbers with sf2.org.
Name Servers
Delegation for sf2.org is to five name servers: ns1.value-domain.com, ns2.value-domain.com, ns3.value-domain.com and two others.
sf2.org shares at least some of its name servers with other domains, including solar-kadai.com, ikma.info, kuyo-katachi.com and two others.
These name servers are frequently paired with the name servers ns4.value-domain.com, ns5.value-domain.com, ns11.value-domain.com and two others.
Host names pointing to a single IP address:
ns1.value-domain.com points to the IP address 172.64.52.38.
ns2.value-domain.com points to the IP address 172.64.53.3.
ns3.value-domain.com points to the IP address 172.64.52.38.
ns4.value-domain.com points to the IP address 172.64.53.3.
ns5.value-domain.com points to the IP address 172.64.52.38.
ns1.value-domain.com, ns3.value-domain.com and ns5.value-domain.com are host names that all point to 172.64.52.38.
These two host names — ns2.value-domain.com and ns4.value-domain.com — each point to 172.64.53.3 IP addresses.
Mail Servers
sf2.org has a single mail server: sf2.org itself.
There is one IP number for sf2.org: 202.172.28.62.