[REN-BGP-stats-all] IPv4 R&E Routing Table Report - URAN (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Thu Feb 6 17:10:45 UTC 2025
IPv4 R&E Routing Table Report 17:10 GMT Thu 06 Feb, 2025
IPv4 BGP Table (R&E) as seen at URAN.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/URAN/
Analysis Summary
----------------
BGP routing table entries examined: 19283
Prefixes after maximum aggregation (per Origin AS): 10407
Deaggregation factor: 1.85
Unique aggregates announced (without unneeded subnets): 11453
Number of IPv4 prefixes with a valid ROA: 7382
Number of IPv4 prefixes with an invalid ROA: 2
Number of IPv4 prefixes with no ROA: 11899
Total ASes present in the Internet Routing Table: 2692
Prefixes per ASN: 7.16
Origin-only ASes present in the Internet Routing Table: 2327
Origin ASes announcing only one prefix: 1042
Transit ASes present in the Internet Routing Table: 365
Transit-only ASes present in the Internet Routing Table: 64
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.9
Max AS path length visible: 20
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 1
Number of instances of unregistered ASNs: 1
Number of 32-bit ASNs allocated by the RIRs: 46102
Number of 32-bit ASNs visible in the Routing Table: 639
Prefixes from 32-bit ASNs in the Routing Table: 1745
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: 3
Number of addresses announced to Internet: 199493840
Equivalent to 11 /8s, 228 /16s and 8 /24s
Percentage of available address space announced: 5.4
Percentage of allocated address space announced: 5.4
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: 2335
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4714
Total APNIC prefixes after maximum aggregation: 2261
APNIC Deaggregation factor: 2.08
Prefixes being announced from the APNIC address blocks: 4713
Unique aggregates announced from the APNIC address blocks: 2604
APNIC Region origin ASes present in the Internet Routing Table: 560
APNIC Prefixes per ASN: 8.42
APNIC Region origin ASes announcing only one prefix: 236
APNIC Region transit ASes present in the Internet Routing Table: 58
Average APNIC Region AS path length visible: 4.7
Max APNIC Region AS path length visible: 15
Number of APNIC region 32-bit ASNs visible in the Routing Table: 206
Number of APNIC addresses announced to Internet: 45473888
Equivalent to 2 /8s, 181 /16s and 224 /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, 131072-153913
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: 8478
Total ARIN prefixes after maximum aggregation: 4765
ARIN Deaggregation factor: 1.78
Prefixes being announced from the ARIN address blocks: 8493
Unique aggregates announced from the ARIN address blocks: 5212
ARIN Region origin ASes present in the Internet Routing Table: 1252
ARIN Prefixes per ASN: 6.78
ARIN Region origin ASes announcing only one prefix: 443
ARIN Region transit ASes present in the Internet Routing Table: 151
Average ARIN Region AS path length visible: 5.4
Max ARIN Region AS path length visible: 17
Number of ARIN region 32-bit ASNs visible in the Routing Table: 199
Number of ARIN addresses announced to Internet: 90168928
Equivalent to 5 /8s, 95 /16s and 222 /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: 3351
Total RIPE prefixes after maximum aggregation: 2667
RIPE Deaggregation factor: 1.26
Prefixes being announced from the RIPE address blocks: 3339
Unique aggregates announced from the RIPE address blocks: 2699
RIPE Region origin ASes present in the Internet Routing Table: 606
RIPE Prefixes per ASN: 5.51
RIPE Region origin ASes announcing only one prefix: 277
RIPE Region transit ASes present in the Internet Routing Table: 104
Average RIPE Region AS path length visible: 3.8
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 140
Number of RIPE addresses announced to Internet: 57202896
Equivalent to 3 /8s, 104 /16s and 216 /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: 1547
Total LACNIC prefixes after maximum aggregation: 535
LACNIC Deaggregation factor: 2.89
Prefixes being announced from the LACNIC address blocks: 1544
Unique aggregates announced from the LACNIC address blocks: 701
LACNIC Region origin ASes present in the Internet Routing Table: 154
LACNIC Prefixes per ASN: 10.03
LACNIC Region origin ASes announcing only one prefix: 54
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 5.7
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 64
Number of LACNIC addresses announced to Internet: 4119616
Equivalent to 0 /8s, 62 /16s and 220 /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: 1192
Total AfriNIC prefixes after maximum aggregation: 178
AfriNIC Deaggregation factor: 6.70
Prefixes being announced from the AfriNIC address blocks: 1191
Unique aggregates announced from the AfriNIC address blocks: 234
AfriNIC Region origin ASes present in the Internet Routing Table: 55
AfriNIC Prefixes per ASN: 21.65
AfriNIC Region origin ASes announcing only one prefix: 32
AfriNIC Region transit ASes present in the Internet Routing Table: 11
Average AfriNIC Region AS path length visible: 4.7
Max AfriNIC Region AS path length visible: 20
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30
Number of AfriNIC addresses announced to Internet: 2525952
Equivalent to 0 /8s, 38 /16s and 139 /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
2907 641 2186 464 SINET-AS Research Organization of Informa
7497 450 180 24 CSTNET-AS-AP Computer Network Information
1237 194 74 145 KREONET-AS-KR KISTI, KR
58647 183 18 2 KAGAWAU-AS Kagawa University, JP
7575 173 297 116 AARNET-AS-AP Australian Academic and Rese
55824 147 19 21 NKN-CORE-NW NKN Core Network, IN
4538 140 4192 70 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 61 35 9 UNINET-AS-AP UNINET-, TH
2697 59 4 34 ERX-ERNET-AS Education and Research Netwo
Complete listing at https://bgp.nsrc.org/REN/URAN/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2152 431 507 98 CENIC-2152, US
2920 221 44 45 LACOE, US
668 203 646 172 DNIC-AS-00668, US
376 202 162 151 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
18558 140 18 5 NETBLK-RCOEK, US
81 129 519 34 NCREN, US
23024 97 7 17 OCDE, US
21976 88 34 14 NJEDGE-NET, US
237 82 541 48 MERIT-AS-14, US
Complete listing at https://bgp.nsrc.org/REN/URAN/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
786 208 1767 183 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
8895 110 24 5 ISU Internet Services Unit ISU, SA
1103 96 1487 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 26 73 ROEDUNET, RO
137 80 676 76 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 78 462 78 BELWUE BelWue-Koordination, DE
2200 64 598 59 FR-RENATER Reseau National de telecommuni
Complete listing at https://bgp.nsrc.org/REN/URAN/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 311 178 44 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
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
2715 46 99 35 Fundacao Carlos Chagas Filho de Amparo a
3596 40 8 4 Universidad Autonoma Metropolitana, MX
28614 38 2 2 Fundacao Universidade Regional de Blumena
Complete listing at https://bgp.nsrc.org/REN/URAN/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 552 82 3 KENET-AS, KE
2018 378 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37182 36 8 1 TERNET, TZ
37215 34 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
30983 12 4 2 MARWAN-AS, MA
37661 12 8 4 NRaE1-AS, NG
37501 11 49 6 UOFS, ZA
327700 10 16 1 MoRENet, MZ
Complete listing at https://bgp.nsrc.org/REN/URAN/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 641 2186 464 SINET-AS Research Organization of Informa
36914 552 82 3 KENET-AS, KE
7497 450 180 24 CSTNET-AS-AP Computer Network Information
2152 431 507 98 CENIC-2152, US
2018 378 319 71 TENET-1, ZA
1916 311 178 44 Rede Nacional de Ensino e Pesquisa, BR
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
2920 221 44 45 LACOE, US
786 208 1767 183 JANET Jisc Services Limited, GB
668 203 646 172 DNIC-AS-00668, US
Complete listing at https://bgp.nsrc.org/REN/URAN/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 552 549 KENET-AS, KE
7497 450 426 CSTNET-AS-AP Computer Network Information Cente
2152 431 333 CENIC-2152, US
2018 378 307 TENET-1, ZA
1916 311 267 Rede Nacional de Ensino e Pesquisa, BR
5786 198 197 UPRENET, PR
58647 183 181 KAGAWAU-AS Kagawa University, JP
2920 221 176 LACOE, US
18558 140 135 NETBLK-RCOEK, US
55824 147 126 NKN-CORE-NW NKN Core Network, IN
Complete listing at https://bgp.nsrc.org/REN/URAN/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
Complete listing at https://bgp.nsrc.org/REN/URAN/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
164.160.192.0/21 Origin: 37661 NRaE1-AS, NG
164.160.192.0/21 Transit: 37288 WACREN, SN
202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U
202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH
203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University
203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/URAN/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 /8:0 /9:1 /10:1 /11:1 /12:10
/13:18 /14:35 /15:118 /16:1979 /17:417 /18:453
/19:572 /20:836 /21:880 /22:1417 /23:1524 /24:10821
/25:54 /26:77 /27:37 /28:6 /29:13 /30:10
/31:0 /32:3
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 528 552 KENET-AS, KE
8895 107 110 ISU Internet Services Unit ISU, SA
1916 75 311 Rede Nacional de Ensino e Pesquisa, BR
2152 53 431 CENIC-2152, US
23024 36 97 OCDE, US
37182 35 36 TERNET, TZ
32440 33 58 LONI, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 32 57 SEAP-AGE, ES
Complete listing at https://bgp.nsrc.org/REN/URAN/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:15 6:4 8:2 12:1 14:93
23:7 24:2 31:1 35:3 37:8 38:10
40:1 41:255 42:11 44:4 45:45 46:4
47:1 49:7 50:2 52:1 59:19 60:6
61:3 62:6 63:32 64:44 65:5 66:34
67:39 68:12 69:18 70:2 71:1 72:8
74:53 76:37 77:7 78:3 79:10 80:10
81:24 82:4 83:6 84:7 85:31 87:1
89:10 91:41 93:14 94:2 95:2 96:5
97:1 98:2 102:12 103:298 104:80 108:8
109:5 111:21 113:1 114:24 116:7 117:61
118:32 119:23 121:27 122:8 123:8 124:42
125:5 128:59 129:37 130:96 131:65 132:64
133:156 134:109 136:198 137:92 138:58 139:5
140:33 141:3 142:41 143:25 144:26 145:2
146:136 147:55 148:198 149:13 150:70 151:11
152:129 153:14 154:45 155:64 156:135 157:25
158:30 159:117 160:33 161:17 162:22 163:63
164:11 165:49 167:26 168:119 169:7 170:95
172:2 173:6 175:16 177:6 179:13 180:16
181:1 182:11 184:6 185:43 186:3 187:22
188:13 189:3 190:34 191:13 192:1417 193:273
194:115 195:77 196:148 197:336 198:534 199:276
200:332 201:36 202:640 203:436 204:386 205:164
206:211 207:273 208:62 209:158 210:220 211:3
212:146 213:4 214:8 216:92 217:12 218:22
219:6 220:16 222:2 223:15
End of report
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