Johannes Ernst

Data as of 2026-08-23
BGP inherited
Cluster stats
Netblocks99 · 1,036 IPv4 addresses
IPv6 93 prefixes (largest 2a11:6c7:1100::/40)
Registered in Canada (1) · Germany (1) · France (1) · United Kingdom (1) · Hungary (1) · Serbia (1)
Cluster ID227635808
RegistryBGP
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 17 shared RIR contact/maintainer handles
Registry names 4 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works · report an issue

Footprint over time

9 weekly snapshots · JSON
99 +16 netblocks since 2026-07-05
2026-07-05 peak 99 2026-08-23

IP Ranges (99)

showing 50 of 99 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
37.59.137.104/30 Johannes M RIPE ASSIGNED PA ● high
81.18.58.0/24 Johannes Ernst BGP ANNOUNCED ● high
81.168.111.0/24 Johannes Ernst BGP ANNOUNCED ● high
87.229.23.0/24 Johannes Ernst BGP ANNOUNCED ● high
192.208.1.0/24 Johannes Ernst BGP ANNOUNCED ● high
2a0b:4e07:200::/44 Johannes Ernst BGP ANNOUNCED ● high
2a0f:6280:1100::/44 Johannes Ernst BGP ANNOUNCED ● high
2a10:2f00:143::/48 Johannes Ernst RIPE ASSIGNED ● high
2a11:6c7::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:1::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:2::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:3::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:4::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:5::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:6::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:7::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:8::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:9::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:a::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:b::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:c::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:10::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:11::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:12::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:13::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:14::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:16::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:17::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:18::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:19::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:20::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:21::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:22::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:23::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:24::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:25::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:26::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:27::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:28::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:f00::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:f01::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:f03::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:f04::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:f05::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:f06::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:f07::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:f08::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:f09::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:f10::/48 Johannes Ernst BGP ANNOUNCED ● high
2a11:6c7:f11::/48 Johannes Ernst BGP ANNOUNCED ● high

IPv6 ranges (93)

showing the 15 largest allocations
CIDR
2a11:6c7:1100::/40
2a11:6c7:1200::/40
2a11:6c7:1300::/40
2a11:6c7:1400::/40
2a11:6c7:1600::/40
2a11:6c7:1700::/40
2a11:6c7:1800::/40
2a11:6c7:1900::/40
2a11:6c7:1a00::/40
2a11:6c7:1b00::/40
2a11:6c7:2000::/40
2a11:6c7:2200::/40
2a11:6c7:2300::/40
2a11:6c7:2500::/40
2a11:6c7:2600::/40

Network trust

what's this?
RPKI hygiene: A how networks compare →
97.0% of checked blocks have valid RPKI ROA coverage (96 of 99)
Possible discrepancies (1)

These blocks are registered to Johannes Ernst but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.

81.168.111.0/24 /24 authorized for AS154383 — ZORNTECH WEB SOLUTIONS

NIC Handles

AS212895 DUMY-RIPE DUMY-RIPE HOP179-MNT HYEHOST-MNT I6P-MNT MK-NETZDIENSTE-MNT MNT-GCICOM ORG-JE52-RIPE ORG-JM105-RIPE OVH-MNT SBMT +5 more