Summary

ASN	AS2850 University College Dublin
BGP	137.43.0.0/16
IPs with RDNS	254
Hosted Domains	0
Pingable IPs	0
Router IPs	0


137.43.21.0	—	0
137.43.21.1	dhcp-892b1501.ucd.ie	0
137.43.21.2	dhcp-892b1502.ucd.ie	0
137.43.21.3	dhcp-892b1503.ucd.ie	0
137.43.21.4	dhcp-892b1504.ucd.ie	0
137.43.21.5	dhcp-892b1505.ucd.ie	0
137.43.21.6	dhcp-892b1506.ucd.ie	0
137.43.21.7	dhcp-892b1507.ucd.ie	0
137.43.21.8	dhcp-892b1508.ucd.ie	0
137.43.21.9	dhcp-892b1509.ucd.ie	0
137.43.21.10	dhcp-892b150a.ucd.ie	0
137.43.21.11	dhcp-892b150b.ucd.ie	0
137.43.21.12	dhcp-892b150c.ucd.ie	0
137.43.21.13	dhcp-892b150d.ucd.ie	0
137.43.21.14	dhcp-892b150e.ucd.ie	0
137.43.21.15	dhcp-892b150f.ucd.ie	0
137.43.21.16	dhcp-892b1510.ucd.ie	0
137.43.21.17	dhcp-892b1511.ucd.ie	0
137.43.21.18	dhcp-892b1512.ucd.ie	0
137.43.21.19	dhcp-892b1513.ucd.ie	0
137.43.21.20	dhcp-892b1514.ucd.ie	0
137.43.21.21	dhcp-892b1515.ucd.ie	0
137.43.21.22	dhcp-892b1516.ucd.ie	0
137.43.21.23	dhcp-892b1517.ucd.ie	0
137.43.21.24	dhcp-892b1518.ucd.ie	0
137.43.21.25	dhcp-892b1519.ucd.ie	0
137.43.21.26	dhcp-892b151a.ucd.ie	0
137.43.21.27	dhcp-892b151b.ucd.ie	0
137.43.21.28	dhcp-892b151c.ucd.ie	0
137.43.21.29	dhcp-892b151d.ucd.ie	0
137.43.21.30	dhcp-892b151e.ucd.ie	0
137.43.21.31	dhcp-892b151f.ucd.ie	0
137.43.21.32	dhcp-892b1520.ucd.ie	0
137.43.21.33	dhcp-892b1521.ucd.ie	0
137.43.21.34	dhcp-892b1522.ucd.ie	0
137.43.21.35	dhcp-892b1523.ucd.ie	0
137.43.21.36	dhcp-892b1524.ucd.ie	0
137.43.21.37	dhcp-892b1525.ucd.ie	0
137.43.21.38	dhcp-892b1526.ucd.ie	0
137.43.21.39	dhcp-892b1527.ucd.ie	0
137.43.21.40	dhcp-892b1528.ucd.ie	0
137.43.21.41	dhcp-892b1529.ucd.ie	0
137.43.21.42	dhcp-892b152a.ucd.ie	0
137.43.21.43	dhcp-892b152b.ucd.ie	0
137.43.21.44	dhcp-892b152c.ucd.ie	0
137.43.21.45	dhcp-892b152d.ucd.ie	0
137.43.21.46	dhcp-892b152e.ucd.ie	0
137.43.21.47	dhcp-892b152f.ucd.ie	0
137.43.21.48	dhcp-892b1530.ucd.ie	0
137.43.21.49	dhcp-892b1531.ucd.ie	0
137.43.21.50	dhcp-892b1532.ucd.ie	0
137.43.21.51	dhcp-892b1533.ucd.ie	0
137.43.21.52	dhcp-892b1534.ucd.ie	0
137.43.21.53	dhcp-892b1535.ucd.ie	0
137.43.21.54	dhcp-892b1536.ucd.ie	0
137.43.21.55	dhcp-892b1537.ucd.ie	0
137.43.21.56	dhcp-892b1538.ucd.ie	0
137.43.21.57	dhcp-892b1539.ucd.ie	0
137.43.21.58	dhcp-892b153a.ucd.ie	0
137.43.21.59	dhcp-892b153b.ucd.ie	0
137.43.21.60	dhcp-892b153c.ucd.ie	0
137.43.21.61	dhcp-892b153d.ucd.ie	0
137.43.21.62	dhcp-892b153e.ucd.ie	0
137.43.21.63	dhcp-892b153f.ucd.ie	0
137.43.21.64	dhcp-892b1540.ucd.ie	0
137.43.21.65	dhcp-892b1541.ucd.ie	0
137.43.21.66	dhcp-892b1542.ucd.ie	0
137.43.21.67	dhcp-892b1543.ucd.ie	0
137.43.21.68	dhcp-892b1544.ucd.ie	0
137.43.21.69	dhcp-892b1545.ucd.ie	0
137.43.21.70	dhcp-892b1546.ucd.ie	0
137.43.21.71	dhcp-892b1547.ucd.ie	0
137.43.21.72	dhcp-892b1548.ucd.ie	0
137.43.21.73	dhcp-892b1549.ucd.ie	0
137.43.21.74	dhcp-892b154a.ucd.ie	0
137.43.21.75	dhcp-892b154b.ucd.ie	0
137.43.21.76	dhcp-892b154c.ucd.ie	0
137.43.21.77	dhcp-892b154d.ucd.ie	0
137.43.21.78	dhcp-892b154e.ucd.ie	0
137.43.21.79	dhcp-892b154f.ucd.ie	0
137.43.21.80	dhcp-892b1550.ucd.ie	0
137.43.21.81	dhcp-892b1551.ucd.ie	0
137.43.21.82	dhcp-892b1552.ucd.ie	0
137.43.21.83	dhcp-892b1553.ucd.ie	0
137.43.21.84	dhcp-892b1554.ucd.ie	0
137.43.21.85	dhcp-892b1555.ucd.ie	0
137.43.21.86	dhcp-892b1556.ucd.ie	0
137.43.21.87	dhcp-892b1557.ucd.ie	0
137.43.21.88	dhcp-892b1558.ucd.ie	0
137.43.21.89	dhcp-892b1559.ucd.ie	0
137.43.21.90	dhcp-892b155a.ucd.ie	0
137.43.21.91	dhcp-892b155b.ucd.ie	0
137.43.21.92	dhcp-892b155c.ucd.ie	0
137.43.21.93	dhcp-892b155d.ucd.ie	0
137.43.21.94	dhcp-892b155e.ucd.ie	0
137.43.21.95	dhcp-892b155f.ucd.ie	0
137.43.21.96	dhcp-892b1560.ucd.ie	0
137.43.21.97	dhcp-892b1561.ucd.ie	0
137.43.21.98	dhcp-892b1562.ucd.ie	0
137.43.21.99	dhcp-892b1563.ucd.ie	0
137.43.21.100	dhcp-892b1564.ucd.ie	0
137.43.21.101	dhcp-892b1565.ucd.ie	0
137.43.21.102	dhcp-892b1566.ucd.ie	0
137.43.21.103	dhcp-892b1567.ucd.ie	0
137.43.21.104	dhcp-892b1568.ucd.ie	0
137.43.21.105	dhcp-892b1569.ucd.ie	0
137.43.21.106	dhcp-892b156a.ucd.ie	0
137.43.21.107	dhcp-892b156b.ucd.ie	0
137.43.21.108	dhcp-892b156c.ucd.ie	0
137.43.21.109	dhcp-892b156d.ucd.ie	0
137.43.21.110	dhcp-892b156e.ucd.ie	0
137.43.21.111	dhcp-892b156f.ucd.ie	0
137.43.21.112	dhcp-892b1570.ucd.ie	0
137.43.21.113	dhcp-892b1571.ucd.ie	0
137.43.21.114	dhcp-892b1572.ucd.ie	0
137.43.21.115	dhcp-892b1573.ucd.ie	0
137.43.21.116	dhcp-892b1574.ucd.ie	0
137.43.21.117	dhcp-892b1575.ucd.ie	0
137.43.21.118	dhcp-892b1576.ucd.ie	0
137.43.21.119	dhcp-892b1577.ucd.ie	0
137.43.21.120	dhcp-892b1578.ucd.ie	0
137.43.21.121	dhcp-892b1579.ucd.ie	0
137.43.21.122	dhcp-892b157a.ucd.ie	0
137.43.21.123	dhcp-892b157b.ucd.ie	0
137.43.21.124	dhcp-892b157c.ucd.ie	0
137.43.21.125	dhcp-892b157d.ucd.ie	0
137.43.21.126	dhcp-892b157e.ucd.ie	0
137.43.21.127	dhcp-892b157f.ucd.ie	0
137.43.21.128	dhcp-892b1580.ucd.ie	0
137.43.21.129	dhcp-892b1581.ucd.ie	0
137.43.21.130	dhcp-892b1582.ucd.ie	0
137.43.21.131	dhcp-892b1583.ucd.ie	0
137.43.21.132	dhcp-892b1584.ucd.ie	0
137.43.21.133	dhcp-892b1585.ucd.ie	0
137.43.21.134	dhcp-892b1586.ucd.ie	0
137.43.21.135	dhcp-892b1587.ucd.ie	0
137.43.21.136	dhcp-892b1588.ucd.ie	0
137.43.21.137	dhcp-892b1589.ucd.ie	0
137.43.21.138	dhcp-892b158a.ucd.ie	0
137.43.21.139	dhcp-892b158b.ucd.ie	0
137.43.21.140	dhcp-892b158c.ucd.ie	0
137.43.21.141	dhcp-892b158d.ucd.ie	0
137.43.21.142	dhcp-892b158e.ucd.ie	0
137.43.21.143	dhcp-892b158f.ucd.ie	0
137.43.21.144	dhcp-892b1590.ucd.ie	0
137.43.21.145	dhcp-892b1591.ucd.ie	0
137.43.21.146	dhcp-892b1592.ucd.ie	0
137.43.21.147	dhcp-892b1593.ucd.ie	0
137.43.21.148	dhcp-892b1594.ucd.ie	0
137.43.21.149	dhcp-892b1595.ucd.ie	0
137.43.21.150	dhcp-892b1596.ucd.ie	0
137.43.21.151	dhcp-892b1597.ucd.ie	0
137.43.21.152	dhcp-892b1598.ucd.ie	0
137.43.21.153	dhcp-892b1599.ucd.ie	0
137.43.21.154	dhcp-892b159a.ucd.ie	0
137.43.21.155	dhcp-892b159b.ucd.ie	0
137.43.21.156	dhcp-892b159c.ucd.ie	0
137.43.21.157	dhcp-892b159d.ucd.ie	0
137.43.21.158	dhcp-892b159e.ucd.ie	0
137.43.21.159	dhcp-892b159f.ucd.ie	0
137.43.21.160	dhcp-892b15a0.ucd.ie	0
137.43.21.161	dhcp-892b15a1.ucd.ie	0
137.43.21.162	dhcp-892b15a2.ucd.ie	0
137.43.21.163	dhcp-892b15a3.ucd.ie	0
137.43.21.164	dhcp-892b15a4.ucd.ie	0
137.43.21.165	dhcp-892b15a5.ucd.ie	0
137.43.21.166	dhcp-892b15a6.ucd.ie	0
137.43.21.167	dhcp-892b15a7.ucd.ie	0
137.43.21.168	dhcp-892b15a8.ucd.ie	0
137.43.21.169	dhcp-892b15a9.ucd.ie	0
137.43.21.170	dhcp-892b15aa.ucd.ie	0
137.43.21.171	dhcp-892b15ab.ucd.ie	0
137.43.21.172	dhcp-892b15ac.ucd.ie	0
137.43.21.173	dhcp-892b15ad.ucd.ie	0
137.43.21.174	dhcp-892b15ae.ucd.ie	0
137.43.21.175	dhcp-892b15af.ucd.ie	0
137.43.21.176	dhcp-892b15b0.ucd.ie	0
137.43.21.177	dhcp-892b15b1.ucd.ie	0
137.43.21.178	dhcp-892b15b2.ucd.ie	0
137.43.21.179	dhcp-892b15b3.ucd.ie	0
137.43.21.180	dhcp-892b15b4.ucd.ie	0
137.43.21.181	dhcp-892b15b5.ucd.ie	0
137.43.21.182	dhcp-892b15b6.ucd.ie	0
137.43.21.183	dhcp-892b15b7.ucd.ie	0
137.43.21.184	dhcp-892b15b8.ucd.ie	0
137.43.21.185	dhcp-892b15b9.ucd.ie	0
137.43.21.186	dhcp-892b15ba.ucd.ie	0
137.43.21.187	dhcp-892b15bb.ucd.ie	0
137.43.21.188	dhcp-892b15bc.ucd.ie	0
137.43.21.189	dhcp-892b15bd.ucd.ie	0
137.43.21.190	dhcp-892b15be.ucd.ie	0
137.43.21.191	dhcp-892b15bf.ucd.ie	0
137.43.21.192	dhcp-892b15c0.ucd.ie	0
137.43.21.193	dhcp-892b15c1.ucd.ie	0
137.43.21.194	dhcp-892b15c2.ucd.ie	0
137.43.21.195	dhcp-892b15c3.ucd.ie	0
137.43.21.196	dhcp-892b15c4.ucd.ie	0
137.43.21.197	dhcp-892b15c5.ucd.ie	0
137.43.21.198	dhcp-892b15c6.ucd.ie	0
137.43.21.199	dhcp-892b15c7.ucd.ie	0
137.43.21.200	dhcp-892b15c8.ucd.ie	0
137.43.21.201	dhcp-892b15c9.ucd.ie	0
137.43.21.202	dhcp-892b15ca.ucd.ie	0
137.43.21.203	dhcp-892b15cb.ucd.ie	0
137.43.21.204	dhcp-892b15cc.ucd.ie	0
137.43.21.205	dhcp-892b15cd.ucd.ie	0
137.43.21.206	dhcp-892b15ce.ucd.ie	0
137.43.21.207	dhcp-892b15cf.ucd.ie	0
137.43.21.208	dhcp-892b15d0.ucd.ie	0
137.43.21.209	dhcp-892b15d1.ucd.ie	0
137.43.21.210	dhcp-892b15d2.ucd.ie	0
137.43.21.211	dhcp-892b15d3.ucd.ie	0
137.43.21.212	dhcp-892b15d4.ucd.ie	0
137.43.21.213	dhcp-892b15d5.ucd.ie	0
137.43.21.214	dhcp-892b15d6.ucd.ie	0
137.43.21.215	dhcp-892b15d7.ucd.ie	0
137.43.21.216	dhcp-892b15d8.ucd.ie	0
137.43.21.217	dhcp-892b15d9.ucd.ie	0
137.43.21.218	dhcp-892b15da.ucd.ie	0
137.43.21.219	dhcp-892b15db.ucd.ie	0
137.43.21.220	dhcp-892b15dc.ucd.ie	0
137.43.21.221	dhcp-892b15dd.ucd.ie	0
137.43.21.222	dhcp-892b15de.ucd.ie	0
137.43.21.223	dhcp-892b15df.ucd.ie	0
137.43.21.224	dhcp-892b15e0.ucd.ie	0
137.43.21.225	dhcp-892b15e1.ucd.ie	0
137.43.21.226	dhcp-892b15e2.ucd.ie	0
137.43.21.227	dhcp-892b15e3.ucd.ie	0
137.43.21.228	dhcp-892b15e4.ucd.ie	0
137.43.21.229	dhcp-892b15e5.ucd.ie	0
137.43.21.230	dhcp-892b15e6.ucd.ie	0
137.43.21.231	dhcp-892b15e7.ucd.ie	0
137.43.21.232	dhcp-892b15e8.ucd.ie	0
137.43.21.233	dhcp-892b15e9.ucd.ie	0
137.43.21.234	dhcp-892b15ea.ucd.ie	0
137.43.21.235	dhcp-892b15eb.ucd.ie	0
137.43.21.236	dhcp-892b15ec.ucd.ie	0
137.43.21.237	dhcp-892b15ed.ucd.ie	0
137.43.21.238	dhcp-892b15ee.ucd.ie	0
137.43.21.239	dhcp-892b15ef.ucd.ie	0
137.43.21.240	dhcp-892b15f0.ucd.ie	0
137.43.21.241	dhcp-892b15f1.ucd.ie	0
137.43.21.242	dhcp-892b15f2.ucd.ie	0
137.43.21.243	dhcp-892b15f3.ucd.ie	0
137.43.21.244	dhcp-892b15f4.ucd.ie	0
137.43.21.245	dhcp-892b15f5.ucd.ie	0
137.43.21.246	dhcp-892b15f6.ucd.ie	0
137.43.21.247	dhcp-892b15f7.ucd.ie	0
137.43.21.248	dhcp-892b15f8.ucd.ie	0
137.43.21.249	dhcp-892b15f9.ucd.ie	0
137.43.21.250	dhcp-892b15fa.ucd.ie	0
137.43.21.251	dhcp-892b15fb.ucd.ie	0
137.43.21.252	dhcp-892b15fc.ucd.ie	0
137.43.21.253	dhcp-892b15fd.ucd.ie	0
137.43.21.254	dhcp-892b15fe.ucd.ie	0
137.43.21.255	—	0

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this range. Learn more.

traceroute -a -n -q1 -f3 -m7 137.43.21.75

traceroute to 137.43.21.75 (137.43.21.75): 7 hops max, 52 byte packets

3 [AS749] 11.254.129.53 1.123 ms

4 [AS749] 11.62.83.173 1.024 ms

5 *

6 *

7 *

Measurement taken from

IPinfo ProbeNet in Tianjin, CN

On December 6th 2025