IPv4 R&E Routing Table Report 19:05 GMT Fri 21 Feb, 2025 IPv4 BGP Table (R&E) as seen at BDREN. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/BDREN/ Analysis Summary ---------------- BGP routing table entries examined: 6942 Prefixes after maximum aggregation (per Origin AS): 3220 Deaggregation factor: 2.16 Unique aggregates announced (without unneeded subnets): 3995 Number of IPv4 prefixes with a valid ROA: 2981 Number of IPv4 prefixes with an invalid ROA: 1 Number of IPv4 prefixes with no ROA: 3960 Total ASes present in the Internet Routing Table: 809 Prefixes per ASN: 8.58 Origin-only ASes present in the Internet Routing Table: 682 Origin ASes announcing only one prefix: 286 Transit ASes present in the Internet Routing Table: 127 Transit-only ASes present in the Internet Routing Table: 48 Paths with bogon ASNs present in the IPv4 Routing Table: 0 Average AS path length visible in the Internet Routing Table: 6.5 Max AS path length visible: 12 Max AS path prepend of ASN (136911) 11 Prefixes from unregistered ASNs in the Routing Table: 0 Number of instances of unregistered ASNs: 0 Number of 32-bit ASNs allocated by the RIRs: 46157 Number of 32-bit ASNs visible in the Routing Table: 270 Prefixes from 32-bit ASNs in the Routing Table: 778 Number of bogon 32-bit ASNs visible in the Routing Table: 0 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 0 Number of addresses announced to Internet: 37032192 Equivalent to 2 /8s, 53 /16s and 17 /24s Percentage of available address space announced: 1.0 Percentage of allocated address space announced: 1.0 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 442 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 3017 Total APNIC prefixes after maximum aggregation: 1191 APNIC Deaggregation factor: 2.53 Prefixes being announced from the APNIC address blocks: 3018 Unique aggregates announced from the APNIC address blocks: 1417 APNIC Region origin ASes present in the Internet Routing Table: 356 APNIC Prefixes per ASN: 8.48 APNIC Region origin ASes announcing only one prefix: 138 APNIC Region transit ASes present in the Internet Routing Table: 47 Average APNIC Region AS path length visible: 5.4 Max APNIC Region AS path length visible: 12 Number of APNIC region 32-bit ASNs visible in the Routing Table: 167 Number of APNIC addresses announced to Internet: 21364224 Equivalent to 1 /8s, 69 /16s and 254 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 1948 Total ARIN prefixes after maximum aggregation: 1403 ARIN Deaggregation factor: 1.39 Prefixes being announced from the ARIN address blocks: 1947 Unique aggregates announced from the ARIN address blocks: 1747 ARIN Region origin ASes present in the Internet Routing Table: 246 ARIN Prefixes per ASN: 7.91 ARIN Region origin ASes announcing only one prefix: 92 ARIN Region transit ASes present in the Internet Routing Table: 36 Average ARIN Region AS path length visible: 7.3 Max ARIN Region AS path length visible: 11 Number of ARIN region 32-bit ASNs visible in the Routing Table: 40 Number of ARIN addresses announced to Internet: 9660416 Equivalent to 0 /8s, 147 /16s and 104 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-402332 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 140 Total RIPE prefixes after maximum aggregation: 22 RIPE Deaggregation factor: 6.36 Prefixes being announced from the RIPE address blocks: 138 Unique aggregates announced from the RIPE address blocks: 24 RIPE Region origin ASes present in the Internet Routing Table: 11 RIPE Prefixes per ASN: 12.55 RIPE Region origin ASes announcing only one prefix: 5 RIPE Region transit ASes present in the Internet Routing Table: 4 Average RIPE Region AS path length visible: 6.3 Max RIPE Region AS path length visible: 11 Number of RIPE region 32-bit ASNs visible in the Routing Table: 3 Number of RIPE addresses announced to Internet: 185856 Equivalent to 0 /8s, 2 /16s and 214 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 1386 Total LACNIC prefixes after maximum aggregation: 496 LACNIC Deaggregation factor: 2.79 Prefixes being announced from the LACNIC address blocks: 1388 Unique aggregates announced from the LACNIC address blocks: 672 LACNIC Region origin ASes present in the Internet Routing Table: 141 LACNIC Prefixes per ASN: 9.84 LACNIC Region origin ASes announcing only one prefix: 49 LACNIC Region transit ASes present in the Internet Routing Table: 22 Average LACNIC Region AS path length visible: 7.9 Max LACNIC Region AS path length visible: 11 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 59 Number of LACNIC addresses announced to Internet: 4075776 Equivalent to 0 /8s, 62 /16s and 49 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-274844 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 451 Total AfriNIC prefixes after maximum aggregation: 108 AfriNIC Deaggregation factor: 4.18 Prefixes being announced from the AfriNIC address blocks: 451 Unique aggregates announced from the AfriNIC address blocks: 135 AfriNIC Region origin ASes present in the Internet Routing Table: 7 AfriNIC Prefixes per ASN: 64.43 AfriNIC Region origin ASes announcing only one prefix: 2 AfriNIC Region transit ASes present in the Internet Routing Table: 2 Average AfriNIC Region AS path length visible: 6.2 Max AfriNIC Region AS path length visible: 8 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1 Number of AfriNIC addresses announced to Internet: 1745920 Equivalent to 0 /8s, 26 /16s and 164 /24s AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 7497 451 180 24 CSTNET-AS-AP Computer Network Information 1237 192 74 146 KREONET-AS-KR KISTI, KR 55824 147 19 21 NKN-CORE-NW NKN Core Network, IN 4538 140 4192 71 ERX-CERNET-BKB China Education and Resear 4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha 4621 69 37 10 UNINET-AS-AP UNINET-, TH 23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR 2697 57 4 33 ERX-ERNET-AS Education and Research Netwo 38280 50 3 2 MONASHUNI-MY-AS-AP Monash University Sunw 9317 49 16 1 ITISNET-AS INHA UNIVERSITY, KR Complete listing at https://bgp.nsrc.org/REN/BDREN/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 2152 383 39 259 CENIC-2152, US 376 202 162 151 RISQ-AS, CA 15296 65 5 55 CYBERA, CA 2920 53 10 45 LACOE, US 271 52 24 41 BCNET-AS, CA 611 45 84 30 NECN-1-611, CA 16796 42 19 15 MERLIN-NET, CA 393249 42 68 34 UBC, CA 4193 32 160 29 WA-STATE-GOV, US 18632 31 5 14 VOLCANO-VISION, US Complete listing at https://bgp.nsrc.org/REN/BDREN/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8895 110 24 5 ISU Internet Services Unit ISU, SA 29384 11 3 8 QATAR-FOUNDATION, QA 50517 8 2 1 KSU, SA 56714 2 0 1 IAU, SA 206350 2 0 1 OMREN, OM 209464 2 0 1 KSAU, SA 15488 1 16 1 UPV-EHU, ES 28885 1 0 1 OMANTEL-NAP-AS OmanTel NAP, OM 34945 1 0 1 QF-HBKU-ASN, QA 51946 1 0 1 NEWCASTLE-UNI-NUSAJAYA-CAMPUS, GB Complete listing at https://bgp.nsrc.org/REN/BDREN/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 1916 236 178 41 Rede Nacional de Ensino e Pesquisa, BR 28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M 11340 109 25 52 Red Universitaria Nacional, CL 271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR 4270 53 16 1 Red de Interconexion Universitaria, AR 61468 52 5 17 CEDIA, EC 2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a 28614 38 2 2 Fundacao Universidade Regional de Blumena 1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S 3596 37 8 4 Universidad Autonoma Metropolitana, MX Complete listing at https://bgp.nsrc.org/REN/BDREN/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 2018 380 319 71 TENET-1, ZA 8094 47 48 18 PUKNET, ZA 37501 11 49 6 UOFS, ZA 36982 8 33 8 UCT, ZA 37520 3 16 3 Rhodes-Univ, ZA 6149 1 0 1 TENET-2, ZA 329418 1 0 1 International-Centre-Research-Agroforestr Complete listing at https://bgp.nsrc.org/REN/BDREN/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 7497 451 180 24 CSTNET-AS-AP Computer Network Information 2152 383 39 259 CENIC-2152, US 2018 380 319 71 TENET-1, ZA 1916 236 178 41 Rede Nacional de Ensino e Pesquisa, BR 376 202 162 151 RISQ-AS, CA 1237 192 74 146 KREONET-AS-KR KISTI, KR 28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M 55824 147 19 21 NKN-CORE-NW NKN Core Network, IN 4538 140 4192 71 ERX-CERNET-BKB China Education and Resear 8895 110 24 5 ISU Internet Services Unit ISU, SA Complete listing at https://bgp.nsrc.org/REN/BDREN/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 2018 380 309 TENET-1, ZA 1916 236 195 Rede Nacional de Ensino e Pesquisa, BR 55824 147 126 NKN-CORE-NW NKN Core Network, IN 2152 383 124 CENIC-2152, US 8895 110 105 ISU Internet Services Unit ISU, SA 28391 157 88 Universidad Juarez Autonoma de Tabasco, MX 4762 75 74 MAHIDOL-BORDER-AS Mahidol University, Thailand, 4538 140 69 ERX-CERNET-BKB China Education and Research Net 271640 67 66 UNIVERSIDADE FEDERAL DE VICOSA, BR 4621 69 59 UNINET-AS-AP UNINET-, TH Complete listing at https://bgp.nsrc.org/REN/BDREN/data-CIDRnet Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:0 /9:0 /10:0 /11:0 /12:6 /13:11 /14:16 /15:51 /16:275 /17:89 /18:110 /19:149 /20:266 /21:269 /22:498 /23:598 /24:4604 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8895 107 110 ISU Internet Services Unit ISU, SA 2152 55 383 CENIC-2152, US 28614 32 38 Fundacao Universidade Regional de Blumenau, BR 61468 25 52 CEDIA, EC 28068 18 22 Universidad Nacional de San Luis, AR 16796 16 42 MERLIN-NET, CA 28609 16 16 Instituto Nupef, BR 15121 15 16 CALTEL-COM, US 18632 14 31 VOLCANO-VISION, US 26421 11 15 PONDEROSA-INTERNET, US Complete listing at https://bgp.nsrc.org/REN/BDREN/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2 14:93 23:3 38:1 42:10 45:30 49:8 50:2 59:19 60:6 61:3 62:1 63:5 64:4 66:18 67:2 74:1 76:1 86:3 91:3 96:5 102:1 103:264 104:3 107:2 111:21 113:1 114:24 116:9 117:61 118:33 119:30 121:27 122:7 123:8 124:42 125:3 128:3 129:1 130:2 131:21 132:21 134:34 137:48 139:2 140:2 142:41 143:14 144:24 146:130 147:5 148:190 150:16 152:48 154:25 155:17 157:20 158:29 159:99 160:5 161:8 162:5 163:3 165:38 167:21 168:68 170:86 175:16 177:4 179:13 180:15 181:1 182:12 185:4 186:3 187:22 189:3 190:33 191:3 192:247 193:1 195:1 196:145 198:251 199:113 200:323 201:37 202:402 203:254 204:80 205:114 206:85 207:152 208:8 209:74 210:218 211:3 212:105 216:22 218:23 219:2 220:16 222:2 223:15 End of report