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
- Academic allocation +6
- Trust score 71 / 100
Experimental · trust-vectors model v1.2.1 — a transparent heuristic, not a definitive verdict. How it works →
Top CIDR ranges
| CIDR | IPs | PTR Density | Organization | Country | State | City |
|---|---|---|---|---|---|---|
| 203.250.64.0/19 | 8.2K |
0.0%
|
UNIVERSITY OF ULSAN | KR | — | — |
| 210.102.152.0/21 | 2.0K |
0.9%
|
UNIVERSITY OF ULSAN | KR | — | — |
| 210.102.160.0/21 | 2.0K |
0.0%
|
UNIVERSITY OF ULSAN | KR | — | — |
| 210.102.208.0/21 | 2.0K |
1.4%
|
UNIVERSITY OF ULSAN | KR | — | — |
| 210.102.168.0/22 | 1.0K |
0.0%
|
UNIVERSITY OF ULSAN | KR | — | — |
| 210.102.216.0/22 | 1.0K |
1.1%
|
UNIVERSITY OF ULSAN | KR | — | — |
| 218.147.40.0/23 | 512 |
0.0%
|
UNIVERSITY OF ULSAN | KR | — | — |
BGP Announced Prefixes
Live BGP anomalies →Prefixes AS55618 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.
| Prefix | Announcement samples | Last seen |
|---|---|---|
| 203.250.88.0/24 | 16,799 | 2026-10-18 05:13:18 |
| 218.147.41.0/24 | 16,751 | 2026-10-18 05:13:18 |
| 218.147.40.0/24 | 16,742 | 2026-10-18 05:13:18 |
| 203.250.89.0/24 | 16,726 | 2026-10-18 05:13:18 |
| 203.250.67.0/24 | 16,696 | 2026-10-18 05:13:18 |
| 203.250.70.0/24 | 16,691 | 2026-10-18 05:13:18 |
| 203.250.66.0/24 | 16,691 | 2026-10-18 05:13:18 |
| 210.102.163.0/24 | 16,689 | 2026-10-18 05:13:18 |
| 203.250.65.0/24 | 16,685 | 2026-10-18 05:13:18 |
| 203.250.75.0/24 | 16,682 | 2026-10-18 05:13:18 |
| 203.250.78.0/24 | 16,679 | 2026-10-18 05:13:18 |
| 203.250.92.0/24 | 16,662 | 2026-10-18 05:13:18 |
| 203.250.72.0/24 | 16,644 | 2026-10-18 05:13:18 |
| 203.250.71.0/24 | 16,642 | 2026-10-18 05:13:18 |
| 203.250.90.0/24 | 16,642 | 2026-10-18 05:13:18 |
| 203.250.76.0/24 | 16,640 | 2026-10-18 05:13:18 |
| 203.250.79.0/24 | 16,637 | 2026-10-18 05:13:18 |
| 203.250.85.0/24 | 16,633 | 2026-10-18 05:13:18 |
| 203.250.73.0/24 | 16,630 | 2026-10-18 05:13:18 |
| 203.250.68.0/24 | 16,629 | 2026-10-18 05:13:18 |
| 203.250.69.0/24 | 16,629 | 2026-10-18 05:13:18 |
| 210.102.164.0/24 | 16,626 | 2026-10-18 05:13:18 |
| 203.250.74.0/24 | 16,624 | 2026-10-18 05:13:18 |
| 210.102.157.0/24 | 16,621 | 2026-10-18 05:13:18 |
| 203.250.77.0/24 | 16,615 | 2026-10-18 05:13:18 |
| 203.250.80.0/24 | 16,615 | 2026-10-18 05:13:18 |
| 210.102.214.0/24 | 16,614 | 2026-10-18 05:13:18 |
| 203.250.86.0/24 | 16,611 | 2026-10-18 05:13:18 |
| 210.102.165.0/24 | 16,608 | 2026-10-18 05:13:18 |
| 210.102.156.0/24 | 16,605 | 2026-10-18 05:13:18 |
| 203.250.91.0/24 | 16,602 | 2026-10-18 05:13:18 |
| 203.250.93.0/24 | 16,601 | 2026-10-18 05:13:18 |
| 210.102.210.0/24 | 16,595 | 2026-10-18 05:13:18 |
| 203.250.94.0/24 | 16,594 | 2026-10-18 05:13:18 |
| 203.250.83.0/24 | 16,587 | 2026-10-18 05:13:18 |
| 203.250.87.0/24 | 16,576 | 2026-10-18 05:13:18 |
| 210.102.218.0/24 | 16,572 | 2026-10-18 05:13:18 |
| 210.102.166.0/24 | 16,569 | 2026-10-18 05:13:18 |
| 203.250.82.0/24 | 16,568 | 2026-10-18 05:13:18 |
| 210.102.217.0/24 | 16,567 | 2026-10-18 05:13:18 |
| 203.250.84.0/24 | 16,566 | 2026-10-18 05:13:18 |
| 203.250.81.0/24 | 16,566 | 2026-10-18 05:13:18 |
| 210.102.213.0/24 | 16,561 | 2026-10-18 05:13:18 |
| 210.102.161.0/24 | 16,561 | 2026-10-18 05:13:18 |
| 203.250.95.0/24 | 16,560 | 2026-10-18 05:13:18 |
| 210.102.162.0/24 | 16,559 | 2026-10-18 05:13:18 |
| 203.250.64.0/24 | 16,559 | 2026-10-18 05:13:18 |
| 210.102.154.0/24 | 16,556 | 2026-10-18 05:13:18 |
| 210.102.219.0/24 | 16,553 | 2026-10-18 05:13:18 |
| 210.102.155.0/24 | 16,551 | 2026-10-18 05:13:18 |
Showing top 50 of 78 announced prefixes by sample volume.
Frequently Asked Questions
What is AS55618?
AS55618 is an Autonomous System Number assigned to UNIVERSITY OF ULSAN. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).
How many IP addresses does AS55618 announce?
AS55618 announces 16.9K IPv4 addresses distributed across 7 routed CIDR prefixes. The network is registered in South Korea.
Who operates AS55618?
AS55618 is operated by UNIVERSITY OF ULSAN. The organization is based in South Korea. You can view all IP ranges and related ASNs on the organization page.
What country is AS55618 registered in?
AS55618 is registered in South Korea. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.
