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	<title>&#45; CircleID</title>
	<link>https://www.circleid.com/blogs/</link>
	<description>Postings from  on CircleID</description>
	<dc:language>en</dc:language>
	<dc:rights>Copyright 2026, unless where otherwise noted.</dc:rights>
	<dc:date>2026-03-31T21:29:00+00:00</dc:date>

	
	<item>
		<title> IPv4: Business As Usual (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20120529_ipv4_business_as_usual</guid>
		<link>https://circleid.com/posts20120529_ipv4_business_as_usual</link>
		<description><![CDATA[This year, we expect that the RIPE NCC's pool of unallocated IPv4 addresses will reach the "last /8", meaning that we have 16,777,216 IPv4 addresses left in the available pool. At that point it will no longer be possible for RIPE NCC members to obtain the amount of IPv4 addresses they will require to expand their current and future networks. When we hit the last /8, the RIPE NCC will only be able to distribute IPv6 addresses and a one-off allocation of IPv4 address space... Has this caused a last minute rush? <a href="https://circleid.com/posts20120529_ipv4_business_as_usual">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> Measuring Root Server Performance (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20120217_measuring_root_server_performance</guid>
		<link>https://circleid.com/posts20120217_measuring_root_server_performance</link>
		<description><![CDATA[Root name servers are a core service of the Internet. As such they receive a huge amount of queries and need to answer reliably with acceptable delay. The RIPE NCC is responsible for operating one of the 13 DNS root name servers K-root which responds to 10,000 - 15,000 queries per second. Most root servers are operated as a network of distributed "instances" using anycast. <a href="https://circleid.com/posts20120217_measuring_root_server_performance">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> No Big Run on IPv4 in 2011 (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20120203_no_big_run_on_ipv4_in_2011</guid>
		<link>https://circleid.com/posts20120203_no_big_run_on_ipv4_in_2011</link>
		<description><![CDATA[2011 was an interesting year for IPv4: in February 2011, the Internet Assigned Numbers Authority (IANA) handed out their last free IPv4 address blocks to the Regional Internet Registries (RIRs). In April 2011, the APNIC (the Regional Internet Registry for the Asia Pacific region) started allocating from its last /8. At the RIPE NCC we did not see a big jump in IPv4 address allocations in 2011, as anticipated by some observers. <a href="https://circleid.com/posts20120203_no_big_run_on_ipv4_in_2011">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> DNS Measurements with RIPE Atlas Data (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20111205_dns_measurements_with_ripe_atlas_data</guid>
		<link>https://circleid.com/posts20111205_dns_measurements_with_ripe_atlas_data</link>
		<description><![CDATA[As described in New RIPE Atlas Features in the Making, each RIPE Atlas probe performs "anycast instance discovery" measurements. This means, for each DNS root name server, we determine which instance of a name server a probe uses. We compile the data from all probes and build maps showing these results for each Atlas probe. In other words, the map shows the "gravitational radius" for root DNS server instances. <a href="https://circleid.com/posts20111205_dns_measurements_with_ripe_atlas_data">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> Visibility of Prefix Lengths in IPv4 and IPv6 (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/postsvisibility_of_prefix_lengths_in_ipv4_and_ipv6</guid>
		<link>https://circleid.com/postsvisibility_of_prefix_lengths_in_ipv4_and_ipv6</link>
		<description><![CDATA[Internet routes are specified for an address prefix. The shorter the prefix, the more general the route. A shorter prefix covers more address space and thus a bigger part of the Internet. Very long prefixes cover few addresses and are used for local routing close to the destination address. In general, it is not necessary to distribute very long prefixes to the whole Internet, because a more general, shorter prefix is sufficient to direct packets in the direction of the destination. <a href="https://circleid.com/postsvisibility_of_prefix_lengths_in_ipv4_and_ipv6">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> DNSSEC Takes Off in Wake of Root Zone Signing (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20110830_dnssec_takes_off_in_wake_of_root_zone_signing</guid>
		<link>https://circleid.com/posts20110830_dnssec_takes_off_in_wake_of_root_zone_signing</link>
		<description><![CDATA[The Domain Name System Security Extensions (DNSSEC) is a suite of IETF-developed specifications designed to validate information provided by the Domain Name System (DNS). ... When the root zone was signed in June 2010, this acted as a catalyst for TLD operators to deploy DNSSEC on their side. We have seen a gradual but significant increase in signed TLDs since then. The map in this post shows the level of DNSSEC deployment in Europe. <a href="https://circleid.com/posts20110830_dnssec_takes_off_in_wake_of_root_zone_signing">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> Measuring World IPv6 Day - First Impressions (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20110621_measuring_world_ipv6_day_first_impressions</guid>
		<link>https://circleid.com/posts20110621_measuring_world_ipv6_day_first_impressions</link>
		<description><![CDATA[The RIPE NCC took active measurements of World IPv6 Day participants before, during and after World IPv6 Day (in cooperation with CAIDA). We selected 53 participants and performed periodical A and AAAA DNS lookups and HTTP fetches from 40 servers worldwide. For HTTP, we fetched data over IPv4 and IPv6. These provide important control points... <a href="https://circleid.com/posts20110621_measuring_world_ipv6_day_first_impressions">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> Internet Service Quality Measured from Thousands of Locations (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20110524_internet_service_quality_measured_from_thousands_of_locations</guid>
		<link>https://circleid.com/posts20110524_internet_service_quality_measured_from_thousands_of_locations</link>
		<description><![CDATA[RIPE Atlas, the new active measurements network maintained by the RIPE NCC, gives you a way to easily measure the quality of your Internet services. RIPE Atlas is designed in such a way that it can collect data for analysis from a great number of locations on the Internet. The actual measurement devices, or "probes", are so small that they can be easily deployed in a home environment. <a href="https://circleid.com/posts20110524_internet_service_quality_measured_from_thousands_of_locations">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> IPv6 RIPEness: One Year Later (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20110510_ipv6_ripeness_one_year_later</guid>
		<link>https://circleid.com/posts20110510_ipv6_ripeness_one_year_later</link>
		<description><![CDATA[A year ago, the RIPE NCC introduced IPv6 RIPEness -- a system that rates IPv6 deployment of Local Internet Registries (LIRs)... Now, one year later, the numbers have gone up... In absolute numbers: more than 3,000 LIRs have IPv6 address space. This means that the RIPE NCC has made more than 1,100 IPv6 allocations within 12 months. <a href="https://circleid.com/posts20110510_ipv6_ripeness_one_year_later">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> Amount of Unsolicited Internet Traffic Reflecting Situation in Libya (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20110328_amount_unsolicited_internet_traffic_reflecting_situation_in_libya</guid>
		<link>https://circleid.com/posts20110328_amount_unsolicited_internet_traffic_reflecting_situation_in_libya</link>
		<description><![CDATA[During the recent political unrest in the Middle East, researchers have observed significant changes in Internet traffic and connectivity. Typically people look at routing data, latencies when connecting to sites and search and query statistics. Here we show results from a previously unused source of data: unsolicited Internet traffic arriving from Libya. The traffic data we captured shows distinct changes in unsolicited traffic patterns since 17 February 2011. <a href="https://circleid.com/posts20110328_amount_unsolicited_internet_traffic_reflecting_situation_in_libya">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> How a Routing Prefix Travels Through the Internet (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/postshow_a_routing_prefix_travels_through_the_internet</guid>
		<link>https://circleid.com/postshow_a_routing_prefix_travels_through_the_internet</link>
		<description><![CDATA[What happens when an IP address prefix gets announced or withdrawn. How does this information propagate through the Internet? And how does it affect the amount of Border Gateway Protocol (BGP) traffic across the Internet when a single prefix is freshly announced or withdrawn from the global routing table? The following short analysis shows the detailed effects of these two events. <a href="https://circleid.com/postshow_a_routing_prefix_travels_through_the_internet">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> The ISP Industry and the Financial Sector - Amazing Similarities (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20110118_isp_industry_and_the_financial_sector_amazing_similarities</guid>
		<link>https://circleid.com/posts20110118_isp_industry_and_the_financial_sector_amazing_similarities</link>
		<description><![CDATA[In the last RIPE Labs article on this subject <a href="http://www.circleid.com/posts/how_does_the_internet_industry_compare/">How Does the Internet Industry Compare?</a>, we looked at ways to compare our industry with other industrial sectors, and identified a number of characteristics that an industry must have in order to be comparable to the Internet industry. It seems the financial sector or monetary credit industry shares many of these characteristics and in fact behaves much like the Internet industry. <a href="https://circleid.com/posts20110118_isp_industry_and_the_financial_sector_amazing_similarities">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> How Does the Internet Industry Compare? (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/postshow_does_the_internet_industry_compare</guid>
		<link>https://circleid.com/postshow_does_the_internet_industry_compare</link>
		<description><![CDATA[In an earlier CircleID post (The ISP Industry: Concentrated or Diverse?) we discussed if the ISP industry is concentrated and concluded the industry is amazingly open and varied. This time we try to identify criteria that make other economic sectors comparable to our own industry, using the global automotive manufacturing sector as an example to test our assumptions. Comparing the Internet industry with other industries is interesting, because it is quite special in a number of ways: it is transparent, keeps detailed records and values a high level of industry self-regulation. It also enables organisations to serve a global market. <a href="https://circleid.com/postshow_does_the_internet_industry_compare">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> The ISP Industry: Concentrated or Diverse? (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20101108_the_isp_industry_concentrated_or_diverse</guid>
		<link>https://circleid.com/posts20101108_the_isp_industry_concentrated_or_diverse</link>
		<description><![CDATA[In August 2010, we looked at the growth in RIPE NCC membership and concluded that the number of new RIPE NCC members is still growing at an amazing pace, even during the recent economic downturn... This time we are looking at the different sizes of RIPE NCC members over time. It is often claimed that there is massive consolidation happening in the ISP community, especially in times of economic difficulties like in the early 2000s and now. We were curious to find out if this is really the case. <a href="https://circleid.com/posts20101108_the_isp_industry_concentrated_or_diverse">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
	</item>
	
	<item>
		<title> DNS Clients Do Request DNSSEC Today (Featured Blog)</title>
		<guid isPermaLink="true">https://circleid.com/posts20100906_dns_clients_do_request_dnssec_today</guid>
		<link>https://circleid.com/posts20100906_dns_clients_do_request_dnssec_today</link>
		<description><![CDATA[After the DNS root zone was finally signed and a number of Top-Level Domains (TLDs) began signing their zones, we were curious to see how many clients actually request DNSSEC information. We looked at the RIPE NCC server that provides secondary service to several country code top-level domains (ccTLDs). <a href="https://circleid.com/posts20100906_dns_clients_do_request_dnssec_today">More...</a>]]></description>
		<dc:date>2026-03-31T14:29:00-07:00</dc:date>
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