ucblib.org - robtex.com
ucblib.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 128.32.10.252🇺🇸 UCB128.32.0.0/16 CENIC_UC_Berkeley | ||||||
| PTR | amboy.lib.berkeley.edu | ||||||
| NS | ns-1198.awsdns-21.org ⭐ | ||||||
| A | 2600:9000:5304:ae00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1198.awsdns-21.org | ||||||
| A | 205.251.196.174🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1198.awsdns-21.org | ||||||
| NS | ns-1736.awsdns-25.co.uk | ||||||
| A | 2600:9000:5306:c800::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1736.awsdns-25.co.uk | ||||||
| A | 205.251.198.200🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1736.awsdns-25.co.uk | ||||||
| NS | ns-478.awsdns-59.com | ||||||
| A | 2600:9000:5301:de00::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-478.awsdns-59.com | ||||||
| A | 205.251.193.222🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-478.awsdns-59.com | ||||||
| NS | ns-615.awsdns-12.net | ||||||
| A | 2600:9000:5302:6700::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-615.awsdns-12.net | ||||||
| A | 205.251.194.103🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-615.awsdns-12.net | ||||||
| SOA | ns-1198.awsdns-21.orgawsdns-hostmaster@amazon.com serial=1 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1774561486 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●NSns-1198.awsdns-21.org2026-03-04 → 2026-03-26 · 2 obs
● 2026-03-26 21:58:14
●NSns-1736.awsdns-25.co.uk2026-03-04 → 2026-03-26 · 2 obs
● 2026-03-26 21:58:14
●NSns-478.awsdns-59.com2026-03-04 → 2026-03-26 · 2 obs
● 2026-03-26 21:58:14
●NSns-615.awsdns-12.net2026-03-04 → 2026-03-26 · 2 obs
● 2026-03-26 21:58:14
●A128.32.10.2522026-03-26 → 2026-03-26 · 2 obs
● 2026-03-26 21:58:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| ucblib.org | ns-615.awsdns-12.net, ns-478.awsdns-59.com, ns-1198.awsdns-21.org, ns-1736.awsdns-25.co.uk | 1 record |
✅ Authoritative Response
Server:205.251.194.103
NS records: ns-615.awsdns-12.net, ns-478.awsdns-59.com, ns-1198.awsdns-21.org, ns-1736.awsdns-25.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ucblib.org (unsigned zone)
⏱️ Timing
Total: 840ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 128.32.10.252 |
| NS | 4 | ns-1198.awsdns-21.org, ns-1736.awsdns-25.co.uk... |
| SOA | 1 | ns-1198.awsdns-21.org awsdns-hostmaster. |
📌 Glue Records Collected
Total: 1
Out-of-bailiwick: 1 (ns-1198.awsdns-21.org)
Analysis
IP Addresses
ucblib.org resolves to one IP number: 128.32.10.252.
other host names including marktwainproject.com, marktwainproject.org, lib.berkeley.edu, ucblib.link and amboy.lib.berkeley.edu share IP numbers with ucblib.org.
Name Servers
ucblib.org is delegated to four name servers: ns-478.awsdns-59.com, ns-615.awsdns-12.net, ns-1198.awsdns-21.org and ns-1736.awsdns-25.co.uk.
ucblib.org at least partially shares name servers with other domains, for instance henoto.com, flex4mg.com, umesystem.com.br, alderwoodrecruitment.com and d3g7leb8qmd8sb.cloudfront.net.
These name servers are commonly used with ns-284.awsdns-35.com, ns-1118.awsdns-11.org and ns-1972.awsdns-54.co.uk.
Host names with two IP numbers:
ns-478.awsdns-59.com points to 2600:9000:5301:de00::1 and 205.251.193.222; ns-615.awsdns-12.net points to 2600:9000:5302:6700::1 and 205.251.194.103; ns-1198.awsdns-21.org points to 2600:9000:5304:ae00::1 and 205.251.196.174; ns-1736.awsdns-25.co.uk points to 2600:9000:5306:c800::1 and 205.251.198.200.