91.212.37.100
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
- Long-established allocation (17y) +6
- Not on any threat blocklist +5
- Has a reverse-DNS (PTR) record +5
- Trust score 81 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
DNS records
- Reverse DNS (PTR)
- gt.bulatsa.com
- Forward-confirmed (FCrDNS)
- ✗ Mismatch
- PTR TTL
- 21600 s
- Reverse DNS last checked
- 2026-10-06 03:48 UTC
- Forward DNS last checked
- 2026-10-06 03:48 UTC
Forward DNS records for gt.bulatsa.com
| Type | Value | Priority | TTL |
|---|---|---|---|
| A | 91.212.37.100 | — | 86400s |
Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.
Domains hosted
as of 2026-10-04 UTC0
issued.live saw no domain resolving to this IP in its latest weekly snapshot.
Domain data provided by issued.live — for full details visit https://issued.live/pricing
Reverse DNS history
How this IP's reverse DNS (PTR) has changed over time, from our scans.
Reverse-DNS changes between Oct 5, 2026 and Oct 6, 2026 were not recorded; the current PTR is shown from its earliest retained observation.
- gt.bulatsa.com — since at least Oct 6, 2026 → present
- no PTR — Oct 5, 2026 → Oct 6, 2026
- gt.bulatsa.com stable — Jun 12, 2026 → Oct 5, 2026
Network Allocation for 91.212.37.100
- CIDR range
- 91.212.37.0/24
- IP range (int)
- 1,540,629,760 — 1,540,630,015
- Prefix length
- /24
- Organization
- Air Traffic Services Authority
- ASN
- AS48746
- ASN name
- Air Traffic Services Authority
- Location
- Sofia, Sofia Capital, Bulgaria
- Coordinates
- 42.682600, 23.322300
- Accuracy radius
- 20 km
- Postal code
- 1000
- Regional Internet Registry
- RIPE
- Allocated
- 2009-02-06
- Data source(s)
- maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
- Last updated
- 2026-10-06 04:07:13
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 91.212.37.100?
91.212.37.100 is allocated to Air Traffic Services Authority (AS48746), registered in Sofia, Bulgaria.
Where is 91.212.37.100 located?
The geolocation for 91.212.37.100 maps to Sofia, Bulgaria 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 91.212.37.100 on?
91.212.37.100 belongs to the 91.212.37.0/24 network block announced by AS48746. This range contains 256 addresses.
Does 91.212.37.100 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.
