Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Forward-confirmed reverse DNS (FCrDNS) +10
- Not on any threat blocklist +5
- Enterprise allocation +4
- Established allocation (14y) +3
- Trust score 87 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
DNS records
- Reverse DNS (PTR)
- sunet.se
- Forward-confirmed (FCrDNS)
- ✓ Confirmed
- PTR TTL
- 86400 s
- Reverse DNS last checked
- 2026-07-18 18:01 UTC
- Forward DNS last checked
- 2026-07-18 18:01 UTC
Forward DNS records for sunet.se
| Type | Value | Priority | TTL |
|---|---|---|---|
| A | 37.156.192.50 | — | 258197s |
| A | 37.156.192.51 | — | 258197s |
| AAAA | 2001:6b0:60:c0::50 | — | 259200s |
| AAAA | 2001:6b0:60:c0::51 | — | 259200s |
| MX | mailfilter-ng-1.sunet.se | 10 | — |
| MX | mailfilter-ng-3.sunet.se | 10 | — |
| MX | mailfilter-ng-4.sunet.se | 10 | — |
| NS | b.ns.kth.se | — | — |
| NS | ns1.sunet.se | — | — |
| NS | server.nordu.net | — | — |
| NS | sunic.sunet.se | — | — |
| TXT | HARICA-IlZDcp0xyzxvNDsk86Z | — | — |
| TXT | MS=ms11318663 | — | — |
| TXT | anthropic-domain-verification-vhrzwm=gVT6MDN0YuDGKinj8OXZOs2vk | — | — |
| TXT | detectify-verification=96012e95a8bdf5cb1274a66c6878a01c | — | — |
| TXT | google-site-verification=_A3iukiCjVSSJi8YcyrWWTkVQ1oqF4il7aJDz6PCljo | — | — |
| TXT | have-i-been-pwned-verification=fc2930b0165bc7e252806e7d81dba3076 | — | — |
| TXT | v=DMARC1; p=quarantine; rua=mailto:dmarc-reports@sunet.se; ruf=mailto:dmarc-reports@sunet.se; fo=1; pct=100 | — | — |
| TXT | v=spf1 mx include:_spf.sunet.se include:spf.protection.outlook.com include:mail.zendesk.com include:smtp.sunet.se ~all | — | — |
Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.
Network Allocation for 37.156.192.50
- CIDR range
- 37.156.192.0/23
- IP range (int)
- 631,029,760 — 631,030,271
- Prefix length
- /23
- Organization
- Vetenskapsradet / SUNET
- ASN
- AS1653
- ASN name
- Vetenskapsradet / SUNET
- Location
- Sweden
- Coordinates
- 59.324700, 18.056000
- Accuracy radius
- 500 km
- Regional Internet Registry
- RIPE
- Allocated
- 2012-03-13
- Data source(s)
- maxmind_asn, ipinfo_lite, maxmind_city, maxmind_country
- Last updated
- 2026-07-11 00:19:59
BGP Routing
Live BGP anomalies →Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.
Frequently Asked Questions
Who owns 37.156.192.50?
37.156.192.50 is allocated to Vetenskapsradet / SUNET (AS1653), registered in Sweden.
Where is 37.156.192.50 located?
The geolocation for 37.156.192.50 maps to Sweden based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.
What network is 37.156.192.50 on?
37.156.192.50 belongs to the 37.156.192.0/23 network block announced by AS1653. This range contains 512 addresses.
Does 37.156.192.50 have a reverse DNS record?
Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.
Neighbors
Other addresses in the same /24.
