IPv4 R&E Routing Table Report 23:05 GMT Fri 14 Nov, 2025 IPv4 BGP Table (Global) as seen at Singapore. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/Singapore/ Analysis Summary ---------------- BGP routing table entries examined: 1010624 Prefixes after maximum aggregation (per Origin AS): 391770 Deaggregation factor: 2.58 Unique aggregates announced (without unneeded subnets): 501286 Number of IPv4 prefixes with a valid ROA: 586996 Number of IPv4 prefixes with an invalid ROA: 830 Number of IPv4 prefixes with no ROA: 422798 Total ASes present in the Internet Routing Table: 77448 Prefixes per ASN: 13.05 Origin-only ASes present in the Internet Routing Table: 66345 Origin ASes announcing only one prefix: 27077 Transit ASes present in the Internet Routing Table: 11103 Transit-only ASes present in the Internet Routing Table: 546 Paths with bogon ASNs present in the IPv4 Routing Table: 29 Average AS path length visible in the Internet Routing Table: 4.7 Max AS path length visible: 72 Max AS path prepend of ASN ( 37447) 66 Prefixes from unregistered ASNs in the Routing Table: 963 Number of instances of unregistered ASNs: 993 Number of 32-bit ASNs allocated by the RIRs: 47981 Number of 32-bit ASNs visible in the Routing Table: 39270 Prefixes from 32-bit ASNs in the Routing Table: 215797 Number of bogon 32-bit ASNs visible in the Routing Table: 78 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 412 Number of addresses announced to Internet: 3102977536 Equivalent to 184 /8s, 243 /16s and 174 /24s Percentage of available address space announced: 83.8 Percentage of allocated address space announced: 83.8 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: 331520 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 271521 Total APNIC prefixes after maximum aggregation: 80269 APNIC Deaggregation factor: 3.38 Prefixes being announced from the APNIC address blocks: 261268 Unique aggregates announced from the APNIC address blocks: 106054 APNIC Region origin ASes present in the Internet Routing Table: 14842 APNIC Prefixes per ASN: 17.60 APNIC Region origin ASes announcing only one prefix: 4495 APNIC Region transit ASes present in the Internet Routing Table: 2011 Average APNIC Region AS path length visible: 4.7 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10419 Number of APNIC addresses announced to Internet: 748542976 Equivalent to 44 /8s, 157 /16s and 220 /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: 296408 Total ARIN prefixes after maximum aggregation: 133607 ARIN Deaggregation factor: 2.22 Prefixes being announced from the ARIN address blocks: 296360 Unique aggregates announced from the ARIN address blocks: 145284 ARIN Region origin ASes present in the Internet Routing Table: 19355 ARIN Prefixes per ASN: 15.31 ARIN Region origin ASes announcing only one prefix: 7112 ARIN Region transit ASes present in the Internet Routing Table: 1931 Average ARIN Region AS path length visible: 4.3 Max ARIN Region AS path length visible: 28 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5408 Number of ARIN addresses announced to Internet: 1344940032 Equivalent to 80 /8s, 42 /16s and 40 /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: 281181 Total RIPE prefixes after maximum aggregation: 139592 RIPE Deaggregation factor: 2.01 Prefixes being announced from the RIPE address blocks: 281639 Unique aggregates announced from the RIPE address blocks: 182574 RIPE Region origin ASes present in the Internet Routing Table: 29097 RIPE Prefixes per ASN: 9.68 RIPE Region origin ASes announcing only one prefix: 12091 RIPE Region transit ASes present in the Internet Routing Table: 4037 Average RIPE Region AS path length visible: 4.9 Max RIPE Region AS path length visible: 31 Number of RIPE region 32-bit ASNs visible in the Routing Table: 12805 Number of RIPE addresses announced to Internet: 735406336 Equivalent to 43 /8s, 213 /16s and 105 /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: 125026 Total LACNIC prefixes after maximum aggregation: 30776 LACNIC Deaggregation factor: 4.06 Prefixes being announced from the LACNIC address blocks: 121093 Unique aggregates announced from the LACNIC address blocks: 49601 LACNIC Region origin ASes present in the Internet Routing Table: 11311 LACNIC Prefixes per ASN: 10.71 LACNIC Region origin ASes announcing only one prefix: 2664 LACNIC Region transit ASes present in the Internet Routing Table: 2547 Average LACNIC Region AS path length visible: 5.3 Max LACNIC Region AS path length visible: 38 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9294 Number of LACNIC addresses announced to Internet: 170802176 Equivalent to 10 /8s, 46 /16s and 60 /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: 35525 Total AfriNIC prefixes after maximum aggregation: 6867 AfriNIC Deaggregation factor: 5.17 Prefixes being announced from the AfriNIC address blocks: 49852 Unique aggregates announced from the AfriNIC address blocks: 17414 AfriNIC Region origin ASes present in the Internet Routing Table: 1979 AfriNIC Prefixes per ASN: 25.19 AfriNIC Region origin ASes announcing only one prefix: 715 AfriNIC Region transit ASes present in the Internet Routing Table: 378 Average AfriNIC Region AS path length visible: 5.4 Max AfriNIC Region AS path length visible: 72 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1344 Number of AfriNIC addresses announced to Internet: 103064064 Equivalent to 6 /8s, 36 /16s and 162 /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 9808 13390 8730 117 CHINAMOBILE-CN China Mobile Communication 7545 6091 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4529 539 318 BBIL-AP BHARTI Airtel Ltd., IN 18403 4474 347 24 FPT-AS-AP FPT Telecom Company, VN 7552 3974 1332 28 VIETEL-AS-AP Viettel Group, VN 7713 3718 1044 66 TELKOMNET-AS-AP PT Telekomunikasi Indones 45899 3316 1869 99 VNPT-AS-VN VNPT Corp, VN 56046 3248 828 181 CMNET-JIANGSU-AP China Mobile communicati 24560 2940 864 510 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 140292 2485 272 1919 CHINATELECOM-JIANGSU-SUZHOU-5G-NETWORK CH Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14242 37282 5352 AMAZON-02, US 11492 4786 317 805 CABLEONE, US 22773 4655 3094 383 ASN-CXA-ALL-CCI-22773-RDC, US 7155 3861 286 85 VIASAT-SP-BACKBONE, US 6327 3691 1320 83 SHAW, CA 396982 3288 4827 473 GOOGLE-CLOUD-PLATFORM, US 749 3217 54766 2468 DNIC-AS-00749, US 16625 2888 1234 2156 AKAMAI-AS, US 36352 2849 231 912 AS-COLOCROSSING, US 30036 2663 367 288 MEDIACOM-ENTERPRISE-BUSINESS, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7290 1711 149 UNI2-AS, ES 39891 4833 298 66 ALJAWWALSTC-AS, SA 9009 4025 381 2289 M247, RO 20940 3861 3394 124 AKAMAI-ASN1, NL 12389 3143 2317 868 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2478 175 1785 CDNEXT, GB 34984 2417 363 575 TELLCOM-AS, TR 8452 1684 1852 13 TE-AS TE-AS, EG 13188 1607 100 27 TRIOLAN, UA 203020 1470 167 846 HOSTROYALE, IN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12547 3315 578 UNINET, MX 10620 3455 463 1098 Telmex Colombia S.A., CO 13999 2505 511 345 Mega Cable, S.A. de C.V., MX 11830 1992 369 65 Instituto Costarricense de Electricidad y 28573 1373 2433 261 Claro NXT Telecomunicacoes Ltda, BR 3816 1353 789 206 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1274 371 22 Telefonica del Peru S.A.A., PE 22884 1057 67 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M 26615 1026 2486 56 TIM SA, BR 18881 912 1127 31 TELEFONICA BRASIL S.A, BR Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 1985 630 32 RAYA-AS, EG 36992 1680 1509 397 ETISALAT-MISR, EG 24863 1265 389 20 LINKdotNET-AS, EG 36903 1250 554 97 MT-MPLS, MA 36935 1104 523 34 Vodafone-, EG 37069 1086 1112 11 MOBINIL, EG 29571 1070 94 22 ORANGE-COTE-IVOIRE, CI 20011 580 154 212 NTT-DATA-Inc, ZA 36914 564 82 3 KENET-AS, KE 15399 552 57 56 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14242 37282 5352 AMAZON-02, US 9808 13390 8730 117 CHINAMOBILE-CN China Mobile Communication 8151 12547 3315 578 UNINET, MX 12479 7290 1711 149 UNI2-AS, ES 7545 6091 833 588 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 298 66 ALJAWWALSTC-AS, SA 11492 4786 317 805 CABLEONE, US 22773 4655 3094 383 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4529 539 318 BBIL-AP BHARTI Airtel Ltd., IN 18403 4474 347 24 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13390 13273 CHINAMOBILE-CN China Mobile Communications Grou 8151 12547 11969 UNINET, MX 12479 7290 7141 UNI2-AS, ES 7545 6091 5503 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4833 4767 ALJAWWALSTC-AS, SA 18403 4474 4450 FPT-AS-AP FPT Telecom Company, VN 22773 4655 4272 ASN-CXA-ALL-CCI-22773-RDC, US 9498 4529 4211 BBIL-AP BHARTI Airtel Ltd., IN 11492 4786 3981 CABLEONE, US 7552 3974 3946 VIETEL-AS-AP Viettel Group, VN Complete listing at https://bgp.nsrc.org/REN/Singapore/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 53775 UNALLOCATED 8.20.88.0/24 3737 AS-PTD, US 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887, US 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3, US 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE, US 54338 UNALLOCATED 8.33.241.0/24 6461 ZAYO-6461, US 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3, US 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3, US 54739 UNALLOCATED 8.44.198.0/23 13335 CLOUDFLARENET, US 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174, US 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI Complete listing at https://bgp.nsrc.org/REN/Singapore/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.135.216.0/24 Origin: 400565 RESERVED, ZZ 23.135.216.0/24 Transit: 3356 LEVEL3, US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS, US 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS, US 23.147.240.0/24 Origin: 32302 RESERVED, ZZ 23.147.240.0/24 Transit: 32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NE 23.159.56.0/24 Origin: 174 COGENT-174, US 23.159.56.0/24 Transit: 6453 AS6453, US Complete listing at https://bgp.nsrc.org/REN/Singapore/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:18 /9:14 /10:41 /11:94 /12:298 /13:578 /14:1193 /15:2090 /16:13645 /17:8147 /18:13404 /19:24605 /20:44280 /21:51854 /22:112690 /23:104697 /24:632976 /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 8151 6749 12547 UNINET, MX 12479 6232 7290 UNI2-AS, ES 11492 3599 4786 CABLEONE, US 39891 3521 4833 ALJAWWALSTC-AS, SA 6327 3478 3691 SHAW, CA 22773 2975 4655 ASN-CXA-ALL-CCI-22773-RDC, US 7155 2820 3861 VIASAT-SP-BACKBONE, US 16509 2433 14242 AMAZON-02, US 30036 2319 2663 MEDIACOM-ENTERPRISE-BUSINESS, US 10620 2210 3455 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/Singapore/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2440 2:1534 3:962 4:10 5:4936 6:189 7:6 8:1512 9:6 11:172 12:1231 13:558 14:2599 15:410 16:303 17:386 18:905 20:583 21:4 22:188 23:8031 24:2559 25:2 27:2782 29:19 31:3362 32:31 33:1 34:84 35:274 36:4548 37:4567 38:9309 39:1174 40:462 41:4442 42:2015 43:2852 44:401 45:19264 46:5143 47:374 49:2158 50:2053 51:592 52:1623 54:352 55:1110 56:11 57:290 58:2316 59:1323 60:1187 61:3029 62:3088 63:1735 64:5917 65:2118 66:5872 67:3240 68:1491 69:4123 70:1038 71:624 72:3019 74:2898 75:1515 76:601 77:2760 78:1908 79:1787 80:2281 81:2111 82:3676 83:1465 84:2016 85:3582 86:1104 87:2135 88:1332 89:4598 90:838 91:8393 92:2826 93:2985 94:4152 95:4547 96:1458 97:311 98:953 99:762 100:68 101:1345 102:4254 103:32823 104:5463 105:778 106:911 107:2800 108:1191 109:4235 110:2257 111:3865 112:2754 113:1892 114:2085 115:2244 116:2125 117:3097 118:3067 119:2043 120:2344 121:1492 122:2857 123:2266 124:1645 125:2926 126:125 128:1574 129:960 130:1463 131:2239 132:780 133:461 134:1626 135:365 136:1492 137:1135 138:2862 139:1596 140:1702 141:1561 142:2251 143:2125 144:1331 145:634 146:2178 147:2114 148:2781 149:2850 150:1294 151:2652 152:2265 153:597 154:8139 155:2233 156:3414 157:2206 158:1409 159:2659 160:3672 161:2006 162:3985 163:2325 164:1955 165:2577 166:1321 167:2122 168:3838 169:781 170:5258 171:1091 172:4467 173:3421 174:910 175:1353 176:3761 177:4685 178:4289 179:2288 180:2902 181:4342 182:3800 183:2562 184:2061 185:21660 186:5437 187:4719 188:4386 189:4436 190:9681 191:1513 192:11413 193:9507 194:7843 195:5592 196:3249 197:3341 198:6066 199:6095 200:8067 201:6366 202:10422 203:10558 204:4622 205:3633 206:4361 207:3717 208:4259 209:5324 210:4708 211:2647 212:4889 213:3997 214:1042 215:54 216:7121 217:3327 218:1572 219:403 220:2197 221:1265 222:762 223:3120 End of report