Data as of Nov 13, 2026
217.28.82.0/24
1 residential-proxy exit · 30 daysFIBER Network s.r.o.
Residential-proxy exits
Proxy exits
1
0.39% of its addresses · 30 days
Providers
1
selling exits here
Oct 14, 2026 – Nov 12, 2026
Exits seen per day
1 observation
Proxy providers listing exits
- Oxylabs
Registrations in this block
The registry's network records over this block, widest first, each under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 217.28.80.0/20 | 4,096 | CZ-FIBER-20101105 | FIBER Network s.r.o. (ORG-FNS4-RIPE) · CZ | ALLOCATED PA | Nov 5, 2010 | abuse@ |
| └ 217.28.80.0/21 | 2,048 | FIBER-NETWORKS-APA | FIBER Network s.r.o. (ORG-FNS4-RIPE) · CZ | ASSIGNED PA | Jan 26, 2016 | abuse@ |
Network & registry
Announced by
Covering announcement 217.28.80.0/21
- Prefix
- 217.28.80.0/21
- Announced by
- AS51800 FIBER Network s.r.o.
- Type
- Residential
- Proxy exits
- 8
- RPKI
- RPKI valid
- Netname
- FIBER-NETWORKS-APA
- Registrant
- FIBER Network s.r.o.
- RIR
- RIPE NCC
Registry
Holder
- Organization
- FIBER Network s.r.o.
- Handle
- ORG-FNS4-RIPE
- Range
- 217.
28. 80. 0/ 20 - Registration type
- ALLOCATED PA
- Record created
- Nov 5, 2010
Origin network
AS51800
CZ
- Name
- FIBER Network s.r.o.
- Type
- Internet provider
- Registered
- Nov 5, 2010
- Domain
- fiber.cz
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced 217.28.80.0/21
217.28.80.0/21
Routing history
- Pattern
- Stable
- First seen
- Nov 2010
- Current origin since
- Nov 2010 · 16 yr
- Origin networks
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 217.28.80.0/21 | AS51800 | /21 | RIPE | RPKI valid |
IRR
Route objects on 217.28.80.0/21
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS51800 | RIPE | CZFIBERNET1 | MNT-FIBERCZ | Nov 9, 2010 |
Whois
Registration for this announcement
- Range
- 217.
28. 80. 0/ 21 - Netname
- FIBER-NETWORKS-APA
- Registrant
- FIBER Network s.r.o.
- Registrant country
- CZ
- Organization
- FIBER Network s.r.o. (ORG-FNS4-RIPE)
- Org country
- CZ
- Type
- ASSIGNED PA
- Created
- Jan 26, 2016
- Updated
- Jan 26, 2016
- Maintainer
- MNT-FIBERCZ
- RIR
- RIPE NCC
- Country
- CZ
- Delegated
- Nov 5, 2010
- Status
- assigned
Report abuse
Abuse contact
- abuse@
fiber. cz - Name
- Security dep. FIBER NETWORK s.r.o.
- Handle
- AFBR1