IP range 81.91.80.0/20
81.91.80.0/20 contains 4,096 addresses announced by WEB4U and located in Czechia. First and last address, owner network and neighbouring ranges.
At a glance
- Announced by
- WEB4U AS39790
- Country
- Czechia
- CIDR
- 81.91.80.0/20
- Subnet mask
- 255.255.240.0
Sample lookup
Sample address in this range
81.91.80.1
- Location
- 🇨🇿 Jindřichův Hradec, Jihočeský kraj, Czechia
- ISP · ASN
- WEB4U AS39790
- Type
- Unclassified network
- Hostname
- —
- Time zone
- Europe/Prague 16:17
- Coordinates
- 49.1503, 15.0046
- Prefix
- 81.91.80.0/20
- IP version
- IPv4
- Region
- Jihočeský kraj
Jindřichův Hradec, Jihočeský kraj, CzechiaOpenStreetMap →
Approximate: city-level geolocation, radius about 25 km.
- ASN
- AS39790
- Network name
- WEB4U
- Prefix
- 81.91.80.0/20
- Network type
- Unclassified
- Datacenter / hosting rangeNo
- Tor exit nodeNo
- Known VPN / proxy providerNo
- Spamhaus DROPNo
- BlacklistsCheck →
- PTR recordnoneThe PTR record the address owner published for it.
- Forward-confirmedVerify →Forward-confirmed: the hostname resolves back to this address.
- Reverse zone name1.80.91.81.in-addr.arpa
- Decimal
- 1364938753
- Hex
- 0x515B5001
- Binary
- 01010001.01011011.01010000.00000001
- Octal
- 0121.0133.0120.01
- Arpa
- 1.80.91.81.in-addr.arpa
- Mapped
- ::ffff:81.91.80.1
JSON
{
"ip": "81.91.80.1",
"version": 4,
"classification": "unknown",
"flags": [],
"geo": {
"country_code": "CZ",
"country": "Czechia",
"region": "Jihočeský kraj",
"city": "Jindřichův Hradec",
"lat": 49.1503,
"lon": 15.0046,
"timezone": "Europe/Prague"
},
"asn": {
"asn": 39790,
"name": "WEB4U",
"prefix": "81.91.80.0/20"
},
"rdns": null
}